2014年1月19日星期日

Something about lihuachemical.com

Product Overview
Inert ceramic balls with high strength, high chemical and thermal stability properties, inert ceramic balls can be high temperature, high pressure and corrosive acid, alkali , salt and various organic solvents , inert ceramic balls are widely used in petroleum , chemical, fertilizer, natural gas and environmental protection industries. Inert ceramic balls as the catalyst in the reactor and the cover of the support material, into the buffer liquid and the gas in the reactor catalyst impact , protecting the catalyst in the reactor and improve the distribution of liquid and gas.
Product features
Inert ceramic ball has high strength, high chemical stability, thermal stability and resistance to high temperature, high pressure and acid, alkali, salt and the characteristics of various organic solvent corrosion.
Range of application
Inert ceramic balls are widely used in petroleum, chemical industry, fertilizer industry, natural gas and environmental protection and other industries.
Ammonia decomposition catalyst by the high temperature roasting MgO style carrier, load active component Ni and other growth substance composition, has the very high catalytic activity, high mechanical strength, excellent heat resistance and resistance to coking properties, is mainly used in coke oven gas purification recovery unit in ammonia decomposition furnace, will all of NH3 and HCN in the coke oven gas and other toxic gases into N2 and H2 and CO2, effectively solves the problem of equipment corrosion and environment pollution in coke oven gas.
De-oxygenation catalyst takes precious metal as active component basis loading on activated alumina carrier, which is mainly used to remove oxygen from hydrogen gas, also for nitrogen, CO, CO2, Argon and inert gas.
Operation for hydrogen gas and Argon gas could be done under normal temperature while space velocity (3~10)×103 h1 and residual oxygen could be 0.2ppm. For synthesis gas, coal gas and coking dry gas, operation have to be done at temperature 110~140, pressure>0.1Mpa, space velocity (1~4)×103 h-1, and residual oxygen could be <1ppm




The application of vinyl resin


1, fiberglass and liner
Vinyl resin  commonly used in a high temperature requirements , strong corrosion conditions FRP products , such as the production of large fiberglass storage tanks, tankers , towers , pipes , fans and so on. To be anti- corrosion steel container , concrete ducts are also commonly used to make Vinyl  resin fiberglass liner .
    Large chemical fertilizer urea granulation tower wall in the mid-1960s anti-corrosion coatings , urea crystallization on the concrete wall corrosion is very serious. 1969 Sichuan Luzhou Natural Gas Chemical Plant took the lead with epoxy fiberglass liner corrosion success. But epoxy resin viscosity, construction inconvenience , in recent years has begun to replace the epoxy Vinyl  resin used for urea granulation tower wall corrosion
Since Vinyl  resin has good strength, corrosion resistance and temperature resistance , and thus it can be used to make gel coat resin , used as artificial agate , marble, sanitary ware and other high-end products gelcoat . Vinyl resins to improve thixotropy and viscosity , can be added fumed carbon , together with a small amount of polar additives such as glycerol , BYK605 and so on.
2 , resin cements , mortars
   A Vinyl  resin prepared mortar , mortar for corrosion resistant lining brick panels , paving , pointing , but also corrosion-resistant resin mortar for the whole ground. Such as Beijing Chemical Plant Engineering chlor alkali evaporation surface , the medium is sodium hydroxide, 30% concentration , the use of Vinyl  resin mortar to do the whole floor , China's peaceful construction companies and other construction units on how to reduce the shrinkage of resin mortar summarizes certain aspects experience
3 , the coating
 1) light-cured coatings
Vinyl  resin with benzoquinone, benzoin ethers such as the presence of a photoinitiator , by ultraviolet radiation , can lead to crosslinking and curing extremely fast, in seconds . This feature is made use of light- curable vinyl coating save energy , greatly improving production efficiency and has a good prospect
2) flake paint
   With a Vinyl  resin and glass flake , etc. made of flake paint , can be used for equipment lined steel containers are widely used in petrochemical, metallurgy , papermaking , electroplating , chlor-alkali , medicine, food , construction and other industries, such as power plants water supply system of the desulfurization tower , sodium hydroxide , hydrochloric acid tank, etc. , exhaust system FGD precipitator , absorber , oxidation tower ; duct, chimney wall corrosion in high temperature and strength requirements of the occasion , often using flake paint and fiberglass composite structure.


2014年1月14日星期二

What is Erythorbic Acid?


Erythorbic Acid is a kind of stereo isomer, vitamin C and so on chemical properties similar to vitamin C. Different ascorbic acid as a white to pale yellow or crystal powder, odourless, has a sour taste, 166-172 , melting point and decomposition, with light gradually. Drying condition and is very stable in the air, and when exposed to the atmosphere in aqueous solution is metamorphic rapidly, almost no physiological activity of ascorbic acid, its oxidation resistance is better than that of ascorbic acid, but poor heat resistance, strong reducibility, heavy metal ions can promote the decomposition of ascorbic acid soluble in water, room temperature solubility of 40 g / 100 ml, soluble in ethanol, 5 g / 100 ml, hardly soluble in glycerin, insoluble in benzene, 1% aqueous solution of the PH value of 2.8.
Oxidation resistance
Erythorbic Acid, the antioxidant capacity of far more than vitamin C, no vitamin C, but it will not hinder the body against the bad blood acid absorption and utilization. Ingested ascorbic acid, can be transformed into vitamin C in the body.
The us food and drug administration (1980) will this product as a generally accepted safety material.
2 physical properties
Erythorbic Acid  is white to yellow-white crystal granular or crystal powder, odourless, slightly salty, melting point 200 above decomposition, exposed to the air is quite stable in dry state without becoming dry. But in aqueous solution, when there are air, metal, heat, light, oxidation, soluble in water, room temperature solubility is 16 g / 100 ml, hardly soluble in ethanol, 2% aqueous solution of the PH value of 6.5 to 8.0.
About us
   SINOCHEM NANJING is a diversified large-scale group company, mainly focusing on manufacturing, research and development of new products, and currently, its business has expanded to the fields of Industry Chemicals, Food additives & Feed Additive, etc.
    In recent years, SINOCHEM NANJING has been developing rapidly with expanding scale, improving benefits and outstanding management. The company has been awarded the certificates of ISO9001, ISO14001 and OHSAS18001 by TUV. Meanwhile, it has also been honored as the "AAA" grade enterprise within the fields of Qualification and Credit by the Shenzhen Development Bank and the Contract Abiding, "AAA" grade enterprise by the Provincial Administration for Industry and Commerce for years, as well as "AAA" grade excellent foreign trade enterprise by the Committee of the Credit System of China Foreign Trade & Economic Cooperation Enterprise. SINOCHEM NANJING has been devoting itself to offering qualified products, reliable service with competitive price and professional staffs to meet the demands of the clients.


what is Citric Acid Anhydrous?



Citric Acid Anhydrous , formula C6H8O7, is a colorless, translucent crystals or white granules or white crystalline powder , often containing one molecule of water of crystallization , odorless, very sour taste , soluble in water, alcohol and ether. Suitable crystallization temperature control obtained anhydrous citric acid . Acidic aqueous solution. In dry air, slight weathering , deliquescence in moist air . Mainly for the food and beverage industry as a sour agent , acidity regulator, flavoring agents and preservatives , preservative . Also the chemical industry, cosmetics industry and the industry as a washing antioxidants, plasticizers , detergents.
Character
Colorless transparent crystals or white particles, or white crystalline powder, often contain molecular crystal water, odourless, taste very acid, soluble in water, alcohol and ether. The calcium salt easy dissolve in cold water than hot water, and the properties of commonly used to identify and separate citric acid. Crystallization in control the temperature of the appropriate anhydrous citric acid can be obtained. Acidic aqueous solution. Micro have to weathering in dry air, deliquescence in moist air. More than 175 decomposition release water and carbon dioxide.
Physical and chemical properties: the relative density 1.542, melting point 153 (water), the refractive index of 1.493 ~ 1.509, the solution crystallization critical temperature 36.6 , 36.6 above crystallization of anhydrous citric acid, crystallization of citric acid monohydrate) below 36.6 .
Use
Mainly used for food and beverage industry as sour agent, acidity regulator, flavouring agent, preservative and antistaling agent. Also in the chemical industry, cosmetics industry and washing industry used as antioxidant, plasticizer and detergent
Storage
Avoid light, sealed, dry place storage
About us
   SINOCHEM NANJING is a diversified large-scale group company, mainly focusing on manufacturing, research and development of new products, and currently, its business has expanded to the fields of Industry Chemicals, Food additives & Feed Additive, etc.


2014年1月6日星期一

The advantage of filling hollow glass microspheres

The advantage of filling hollow glass microspheres
hollow glass microspheres as the glass filled a, also occupy a certain market share in the market. In nowadays under the condition of all kinds of filling materials dripping wet markets, what is the fill hollow beads in the market for a long time and unbeaten? Let's take a look at the advantage of the hollow beads filled, maybe you will understand.
As a spherical particle, hollow beads filling used in the paint, paint has the following advantages:
1. The dosage of resin/add less amount of potential: because in any shape, spherical with a minimum of specific surface area, also have the fewest demand of resin of hollow bead filled in. The accumulation of particles situation has been improved. Hollow beads filled the wide particle size distribution makes the small ball is able to fill in the space between the big microspheres. The result... In fact is: high addition amount and high solid content, low VOC and reducing the amount of other ingredients;
2. Low viscosity/improve liquidity: with irregular shape particles, filling hollow beads are easy to scroll between each other. It makes use of cenosphere system has low viscosity, good fluidity. And the system of spraying can be also improved;
3. Hardness/wear resistance: hollow beads filling is a kind of high strength, and hard microspheres, it can enhance the hardness of coatings, scrubbing resistance and abrasion resistance;
4. Excellent heat insulation effect: because of Hollow glass microspheres filled hollow sphere structure that makes it fills in the coating has excellent thermal insulation effect;
5. Luster control: as a kind of filler, the role of hollow bead filled can reduce gloss, used to control, even in addition amount under the condition of the demand is higher, they can also eliminate the matting agent like ordinary easy to cause the increase in viscosity, and the cost is low;
6. The inertia: hollow beads filling is composed of inert ingredients, thus has excellent durability, corrosion resistance, corrosion resistance and chemical resistance;
7. Opacity: hollow beads filling up the hollow spherical slow fire and scattering light, the result is to increase the coating of hiding power;
8. Dispersion: fill the hollow beads scattered as mineral filler, as a result of hollow bead filled thick wall and high compressive strength, it can bear all kinds of mixer, extruding machine and mould machine machining process;
9. No crystalline silicon pollution: unlike other packing, filling hollow beads in crystalline silicon content below the level of no harm. Such cenosphere is seen as a carcinogen, also do not need special hazard warning sign.