Sodium naphthalene sulphonate formaldehyde abstraction of cleaner production

Sodium naphthalene sulphonate formaldehyde abstraction of cleaner production
technologies. After testing research, decay neutralization acknowledgment with acrid to join, can be incorporated into the bulk of absolute acrid agreeable of 20%; abstract acknowledgment assimilation of decay baptize can be abridged to 10%; formulated aqueous pumping agent, 10% baptize agreeable can absolute baptize consumption. Third, the new high-concentrated acrid sodium naphthalene sulphonate formaldehyde gas analysis technology, the use of the accumulation atom of 37% of the top absorption of abrasive soda as the absorption aqueous in aerosol cans and lye catchbasin recycling of bankrupt analysis aftereffect completely, and the absorption aeon and an acrid band-aid can be acclimated as the acknowledgment average in the fall.

Fourth, the use of constructed oil boiler heating kettle kettle sulfonation process, the assembly of sodium naphthalene sulphonate formaldehyde per ton, the atramentous consumption than single-pot amalgam action beef heating economizer about 57%. In summary, naphthalene superplasticizer abstraction of cleaner production technologies, appliance of accustomed resources, to accredit enterprises to access energy, water reducer has assertive allegorical acceptation for industrial production. Overview able accurate water reducer acceptance anionic polymeric surfactants, anionic groups according to their altered activities can be disconnected into two categories: polysulfonates and polycarboxylate. Poly sodium naphthalene sulphonate formaldehyde superplasticizer including melamine sulfonate and sulfamate retarding superplasticizer.

At present, the a lot of broadly acclimated superplasticizer, the
largest use of sodium naphthalene sulphonate formaldehyde, civic output. 1962 Japan's Kao Corporation auspiciously developed a affectionate of divination aboriginal prime sulfonate formaldehyde condensate sodium-based baptize reducer (in translation Mayer too) [1]. Such top baptize abbreviation agent with less, cited aggregate is low, does not influence the ambience time of accurate and accurate features can access early, Modified naphthalene based superplasticizer starches, backward strength, while the main raw actual industry due to low prices of production factors such products, able sources.

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Sodium gluconate china is used in this project

Sodium gluconate china is used in this project in North China Pharmaceutical Factory oral glucose, the form of powder, 10% water. The proposed works with no acute toxic materials or hazardous substance strong chemicals. The project includes the production of solid waste and solid waste solid waste life. The mother liquor after repeated recycling process, a small amount of waste liquor produced approximately 77.3t / a, can be used as cement retarder foreign sales; addition reaction catalyst reused after a certain number of times sodium gluconate china, they will lose their activity, the amount of waste catalyst generated 0.175 t / a, the project will be spent catalyst and its associated waste liquor commission on Heidi bath fine Chemical Co. plant recovery. Currently on the market for sale fume purification technology is relatively mature, the construction unit can be selected according to specific requirements sodium gluconate china, so smoke emission control measures feasible.

The first measure was to control the noise from the first source, and can effectively reduce the scope and extent of the noise impact of the implementation of the second measure can effectively prevent the occurrence of noise nuisance, noise prevention measures are more feasible the. The main source of garbage building construction process is based spoil and construction workers digging garbage. Most of digging for foundation sodium gluconate china backfill base spoil, spoil the remaining small amount of construction waste landfill Sinotrans to deal with; garbage shall be discarded anywhere, stored in airtight bins, regularly sent to solid waste landfill disposal. Between the project staff restaurant operations using clean energy - natural gas as fuel, fume purification efficiency sodium gluconate china by 85% after treatment fume purification lead to the roof emissions, emission concentration of 1.67mg/m3, in line with "cooking fume emission standards" (GB18483-2001) standards.

Also added raw and finished packaging processes baghousedust collected recyclable. The project generated garbage about 12t / a, after the disposal of centralized collection by the sanitation department sodium gluconate china. In the course of the project to strengthen the construction of the green plant in the factory sector consisting of tall trees planted shelterbelts green, green plant in the region should be taken, shrub, flowers and a combination of ways to make the plant greening rate of 20%, Caustic Tank overall surface sodium gluconate china, and strive to build a garden type plants, greening and beautifying the plant while play wind, dust suppression, noise effect, give employees a comfortable working environment to create.

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To study the rheological behavior of calcium ligno sulphonate

To study the rheological behavior of calcium ligno sulphonate (wood calcium) and polystyrene as the main raw material, discusses the maximum torque to blend, balance torque and plasticizing time as indexes of different calcium content of wood, capacity dose and amount of plasticizer in the blend is different plasticizing temperature undergrowth calcium and polystyrene. The results showed that 30% of wood calcium, 1.5% and 3%, the amount of plasticizer dose compatibilizer blended at 160 ℃ maximum torque can be obtained 26.5Nm, and balance torque of 6.0Nm plasticizing time of 130s is preferably co-mixed results. Meanwhile, from the scanning electron microscope calcium ligno sulphonate can be seen, both the blended product is a clear formation of a continuous phase (polystyrene) and a dispersed phase (wood calcium) interface, and the interface between the two phases is less clear, indicating that the two-phase forming a transition between a certain thickness; infrared spectroscopy obtained during the part of both occurred in the blend covalent binding, have shown good blending effect, laid for the further development and utilization of calcium ligno sulphonate resources a theoretical foundation.

Lignin polymer is a renewable natural resource, which not only has good thermoplastic properties such as glass transition temperature, but has excellent characteristics of natural biodegradable. Lignin is a by-product of the pulping process produces [1], but so far, the potential advantages of renewable resources and natural polymer not fully calcium ligno sulphonate [2-5]. With the growing shortage of fossil resources and the people of the world the voice of Environmental Protection. By reducing agent with calcium lignosulfonate and naphthalene superplasticizer contrast, the system of modified lignin calcium sulfonate superplasticizer on durability index mortar impermeability, carbonation resistance and contraction, etc.. The results calcium ligno sulphonate showed that: adding 0.4% calcium lignosulfonate superplasticizer modified mortar 90d permeability ratio of 220%, 28d carbonation depth of 25.5mm, 180d shrinkage ratio of 86%.

Further evaluation revealed through fuzzy math: optimal dosage, the doped modified calcium ligno sulphonate superplasticizer mixed mortar durability is superior to calcium lignosulfonate water reducer and naphthalene superplasticizer. Research calcium ligno sulphonate corrosion properties. Considering the price and environmental factors, the use of modified lignin calcium sulfonate superplasticizer have greater economic effects and environmental effects in mortar projects.

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Sodium lignosulphonate fraction of coal particles

The experimental results showed a molecular weight of 10 000 to 50 000, sodium lignosulphonate fraction of coal particles in the surface of the adsorption isotherm is approximately L-shaped, the larger amount of adsorption, and the surface of the coal particles and the electrokinetic potential (ζ potential) reaches -52mV, in various fractions for Pan River coal has the best dispersion viscosity reduction effect. Chitosan and sodium lignosulphonate as the capsule material to avermectin as core, using a complex coacervation microcapsules legal. Using orthogonal test complex condensates forming conditions conducted a preliminary screening on the basis of in-depth study of the impact of drug loading and microcapsules encapsulation efficiency of various factors. The best preparation conditions: chitosan viscosity 1500 mPa.s, chitosan mass fraction of 0.5%, the mass fraction of 2% sodium lignosulphonate emulsifier Tween80 and Span80 volume ratio of 2, emulsifier 6 mL, shell core mass ratio 6, complex coacervation time 15 min, crosslinking agent 4 mL.

Crosslinking time 1 h, the resulting microcapsules drug loading and encapsulation rate can reach 9.6% and 82%. No wall between the capsule core and chemically bonded. Chitosan / sodium lignosulphonate complex coacervation microcapsules can effectively control the release of avermectin. Traditional chemical pesticide formulations when administered can cause a lot of loss and decomposition of pesticides on human health and the environment at risk. Pesticide release agent can effectively control the drug release rate can be increased pesticide usage and efficacy, reduce environmental pollution and harm to human body, has become a hot area of ??research and development of new pesticide formulation of. In this paper, lignin sulfonate solution SO_2 flue gas removal was investigated experimentally. Experiments with double stirring gas - liquid reactor, the effect of the concentration of sodium lignosulphonate, temperature and other factors on SO_2 absorption and calculate the chemical absorption enhancement factor. The results show that effective removal of lignin sulfonate flue gas SO_2.

Black liquor contains a certain amount of lignin and lignin sulfonate. In order to extract lignin Yebing Lin, etc. [l1 502 have been used to make the black liquor is acidified to precipitate. Application of PEO / sodium lignosulphonate in newsprint. It is reported closed, the special structure itself has a lignin sulfonation reaction can occur with a sulfite, and the reaction itself determines the removal of lignin in the flue gas 50: possible.

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Sodium naphthalene sulfonate formaldehyde as raw materials

Acrylic acid, acrylamide, and sodium naphthalene sulfonate formaldehyde as raw materials, ammonium persulfate as an initiator, synthesized by free radical solution copolymerization of a polycarboxylate superplasticizer, as demonstrated by a variety of detection methods for the synthesis of substance is a terpolymer, and its performance was tested. The effects of reaction temperature, the amount of initiator and pH on polymer yield and structure. With a relatively simple synthesis of a high yield and excellent performance sodium naphthalene sulfonate formaldehyde. Also known as dispersants or water reducing agent, plasticizer, is a class of the most common and important concrete admixture. Less than 5% water rate less than 10% of the reducing agent called ordinary water, water reduction rate of more than 10% of the water reducer called sodium naphthalene sulfonate formaldehyde. Superplasticizer as the fifth component of modern concrete, which is widely applied, has become an important means of high-performance concrete.

Polyethylene glycol methyl ether (MPEG), methacrylic acid (MAA), allyl sulfonate (SAS) and ammonium persulfate (APS) as a raw material monomer such as synthesis of a sodium naphthalene sulfonate formaldehyde , the effect of factors that lead to agents, chain transfer agent, monomer fluidity of cement paste, and analyzes the relationship between different superplasticizer concentration and surface tension; studies show that when the amount of the monomer initiator quality 5 %, the chain transfer agent is 0.3%, SAS is 15%, MAA / MPEG molar ratio of 8:00, water reducing agent for cement better dispersion and plasticity of different cement has good adaptability. In recent years, high performance concrete, sodium naphthalene sulfonate formaldehyde attracted widespread attention. And lignin sulfonate superplasticizer and naphthalene superplasticizer compared superplasticizer with high water reduction, high slump resistance, cement adaptability advantages. Polylactic acid is a polymer having a comb structure of surfactant molecules can be designed strong structure, can control the degree of sodium naphthalene sulfonate formaldehyde of the main chain.

By measuring doped sodium naphthalene sulfonate formaldehyde cement paste setting time, chemical shrinkage, the initial heat of hydration, compressive strength, while taking advantage of XRD analysis, the effect of cement hydration under water reducing agent were studied. Effects of sodium naphthalene sulfonate formaldehyde. The results showed that: Polycarboxylate has a strong retarding effect while having good dispersion, effectively inhibit the initial hydration, without affecting the post-hydration.

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Sodium lignosulfonate is second only to cellulose

Sodium lignosulfonate is second only to cellulose in the plant kingdom's most
abundant organic polymers, mainly from the pulp and paper industry. Isolated from the plant each year about 1.4t cellulose, and lignin get 5000t. But so far, still lignin "black liquor" is discarded in the form of very few effective utilization [1]. Introduced with the ongoing expansion of Glenn Pool surfactant sex drive combined with lignin sulfonate as a sacrificial agent adsorbed field test. As part of this project pre-rinse, and 10 days were injected 2wt% lignin sulfonate solution. Sample Results 2 explains the observation wells in lignosulfonate surfactant is adsorbed, and the effect of the displacement process. Although the results are not very clear, but still concluded that low-cost pre-rinse Sodium lignosulfonate surfactant flooding is beneficial. Experimental study found that pretreatment with a lignosulfonate to the rock, can significantly reduce the loss of surfactant. But the divalent cation binding lignin sulfonate, Sodium lignosulfonate, causes the presence of a cation exchange more. Also found that the interval with NaCI brine slug can reduce the effects of the leading edge of the surfactant slug increase divalent cations.

Alcohol lignin, sodium hydroxide reacted with 3 - chloro-propionic acid prepared by the reaction of lignin ether carboxylate anionic surfactant, by orthogonal test to determine the optimal reaction conditions for the synthesis of lignin ether carboxylate, n (NaOH): n (lignin alcohol) = 2.5, n (3 - chloro-propionic acid): n (lignin alcohol) = 1.2, reaction temperature 80 ℃, reaction time 4 h, ether sodium lignosulfonate conversion rate can be achieved 94.8%. Lignin ether polycarboxylates different degrees of polymerization performance measurement, w = 2.5% of the surface tension can be achieved 41.2 mN / m, lime soap dispersion index of 4.8% ~ 8.4%; turpentine emulsion force 31 s, foam height is 30 ~ 50 mm. Ether carboxylate is in the world to be recognized as superior performance green
surfactant [1], in a similar chemical structure and soap. In performance it is better than the water-soluble soaps and resistance to hard water, and is very gentle to the skin, are non-irritating, mild sodium lignosulfonate. Ether carboxylate surfactant having the characteristics of non-ionic and anionic surface active. For sulfonated alkali lignin (SWSL) entraining too strong decline in compressive strength of concrete problems caused by complex dimethyl silicone defoamers, surfactants, sodium dodecyl sulfate (K12), fatty alcohol ethoxylates (AEO) was modified to improve its air-entraining sex, get modified sulfonated alkali lignin (GSL), systematic study of its physical and chemical properties and performance as concrete water reducer applications.

The results showed that, GSL has a strong sodium lignosulfonate, foam fine uniform, the maximum bubble diameter is only 0.5mm. GSL mixing cement ratio SWSL Zeta potential and high calcium lignosulfonate CLS reach-33mV. Compared with SWSL and CLS, GSL can make fresh mortar with water at low dosage rates and cited higher gas reduction and mortar 150min fluidity loss rate was 3.8%. GSL can significantly improve the hardened mortar pore structure, pore volume fraction of less than 0.02mm holes up to 81.5%. Wood sodium lignosulphonate. Content w (GSL) = 0.25%, the concrete water-reducing rate of 13.6%, 3d and 7d compressive strength ratios were 164% and 163%, respectively, higher than the CLS, reached superplasticizer standards.

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By radical calcium lignosulfonate solution

By radical calcium lignosulfonate solution copolymerization reaction at the surface of calcium lignosulfonate grafted acrylic acid, maleic anhydride,
polyethylene glycol (400) and other monomers synthesized new modified lignin calcium sulfonate superplasticizer, and their structures were characterized; study the new modified calcium lignosulfonate water reducing agent for entraining solution interface parameters and properties, adsorption surface of cement particles and Zeta potential dispersion of cement particles and cement paste reduction performance impacts, and analyzes the mechanism of action. The results show that the new modified calcium lignosulfonate calcium lignosulfonate itself to overcome the entraining too much, retarding defects, and water reduction effect is obvious, that in its content is 0.5% under conditions of reduced water rate of 23.7%; cement paste 7 days and 28 days respectively,
the compressive strength of 94.6 MPa and 107.3 MPa. Calcium 
lignosulfonate from pulp waste liquor is lignin sulfonate obtained by a series of processing paper products, pulp digestion and waste paper pulp processing, reduce river pollution, environmental protection of an important environmental products.

Efficient application of calcium lignosulfonate pulp and paper industry is an important driving force for sustainable development, but nevertheless, calcium lignosulfonate most widely used. Using multiple hydroxyl sulfonating agent for alkali lignin was modified lignin preparation sulfonate superplasticizer cement, by optimizing the modification process to determine the optimal process conditions: the solid content of 40% of the lignin-containing black liquor, adjusting the pH to 12, increasing the temperature to 60 ℃, adding 1% of the mass fraction of black liquor concentration of 30% hydrogen peroxide, the reaction 2 0min, warmed to 12 0 ℃, 9% mass fraction of black liquor is added to the polyhydroxy sulfonating agent, sulfonated 3h. Alkali lignin dispersant performance can reach the current level of calcium lignosulfonate market. Old small soda pulp and paper companies pollute the water environment is very serious. Water pollution mainly from the pulp and waste produced during chemical pulping, commonly known as "black liquor" black liquor contains a lot of organic and inorganic, high COD value and chroma. In recent years, as people on a higher level of environmental concerns, research on treatment methods to explore a lot of black liquor.

With straw or wood pulp alkali lignin as raw material, through Mannich reaction with aliphatic polyamines, acylation of oil and sulfomethylation chloride reacts with the synthesis of a series of modified calcium lignosulfonate acid amide-containing structures salt surfactant. interfacial properties of the modified lignin sulfonate were tested, discussed the impact of the mass fraction of surfactant and alkali content of the interfacial tension results showed that
the modified product has a very good surfactants, Calcium lignosulphonate is a natural polymer, alone You can use the range of variation in the surfactant mass fraction and mass fraction of a wide base to form ultra-low oil - water interfacial tension, comply with the basic requirements of tertiary oil recovery.

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