Cyclohexanol To Cyclohexyl Amine-manufacture,factory,supplier from China

Cyclohexylamine (CHA) is a primary amine, can be miscible with water with infinite ratio, the molecule is small, easy to adsorb on the metal surface, its shielding effect is better than long chain primary amine and secondary amine, so it can effectively prevent the invasion of corrosive ions, thereby improving corrosion resistance, especially the ability to inhibit corrosion.The corrosion inhibition of 304 stainless steel by cyclohexylamine in sodium chloride medium was studied in detail.

Cyclohexylamine has the chemical properties of a primary amine. Carbonates that are strongly alkaline and absorb carbon dioxide in the air to form white crystals. It can react with acyl chloride, anhydride and ester to form N-acyl. React with nitrite to give alcohol. Hydroxymethyl compounds are formed by reaction with formaldehyde in alkaline solution. Reacts with carbon disulfide to form dithiocarbamate. Reacts with aldehydes to form Schiff bases.This product is used to prepare cyclohexanol, caprolactam, acetate fiber and nylon 6, etc.

Cyclohexanol gas-phase ammoniation method: it is the liquid hydrogenation of cyclohexanol and ammonia to cyclohexanamine and dicyclohexanamine under the action of nickel/silica catalyst. The yield of cyclohexanol and dicyclohexanamine is 3:1, and the conversion rate of cyclohexanol is about 70%, which has not been reported in industrialization in China.

It is obtained by catalytic reduction of nickel or cobalt from aniline at high temperature and pressure. Cyclohexanol can also be reduced by phenol, oxidized to cyclohexanone, and then aminated with ammonia to obtain cyclohexanamine.This substance is harmful to the environment, and special attention should be paid to the pollution of water bodies. Acute poisoning may occur by inhalation of vapour. Irritant and corrosive to skin, eyes and mucous membranes, and can cause allergy through skin absorption.

Silane coupling agent product price growth is very obvious, compared with the same period last year growth of 118%. Upstream raw material trichlorosilane price rise, silane products for the high price operation provides a strong support. Reporters learned that trichlorosilane is mainly used in the production of polysilicon, silane coupling agent, silane coupling agent is the second largest downstream market of trichlorosilane, in recent years the demand is more exuberant.

Dicyclohexylamine has the chemical properties of a secondary amine. It has a strong base and can form salts with various acids. Acylation may occur. In terms of solubility, dicyclohexylamine is slightly soluble in cold water but almost insoluble in hot water. Dry powder, carbon dioxide, soluble foam and sand are used to extinguish the fire.

It is obtained by catalytic hydrogenation of aniline and can be divided into atmospheric pressure method and pressure method. In addition, cyclohexamine can be prepared by catalytic ammonolysis of cyclohexane or cyclohexanol, reduction of nitrocyclohexane, and catalytic ammonolysis of cyclohexanone in the presence of hydrogen.The refining process often contains impurities such as aniline and water.

At present, amine salt type corrosion inhibitors are widely used and have superior effects. Through physical and chemical analysis of the sample, ultraviolet spectrum, infrared spectrum, nuclear magnetic resonance spectroscopy and ion chromatography and other series of analysis and  prediction to determine the role of different ions of dicyclohexylamine salt corrosion inhibitor in steel corrosion analysis, and finally determined that the solid sample may be dicyclohexylamine nitrite. 

DCHA at home and abroad is usually a by-product of CHA production. In the process of CHA synthesis by aniline hydrogenation, about 10% of DCHA can be obtained by by-product. In addition, according to the different catalysts, the yield of DCHA prepared by aniline hydrogenation can reach up to 70%, and the yield of cyclohexylamine (CHA) is 30%.Benzene, cyclohexane, cyclohexanol, N-cyclohexylcyclohexamine, phenylcyclohexylamine and other by-products will be generated in the reaction.

Devices that use tail gas to recover cyclohexylamine are characterized in that they include: spray tower, circulating pump, condenser, defogger, photooxygen catalytic oxidizer, ozone treatment device, blower, chimney. Described in the circulating pump and spray the bottom connection, as described in the other side of the circulating pump are connected to the condenser, the condenser and the upper spray tower connection, described in the spray tower are connected to the top of demister, described in the mist bottom and photocatalytic oxidation, photocatalytic oxidation is described, ozone

The invention relates to a refining method of dicyclohexylamine, belonging to the technical field of organic chemistry.

A vapor phase corrosion inhibitor preparation method, including the following steps :a. Dispersing montmorillonite in deionized water, beating, stirring, and then taking the suspension of the solution to add morpholine, heating the solution to evaporate and precipitate crystals.b. Add formaldehyde to the solution in Step a and let it stand; add dicyclohexylamine and let it stand; then add the mixed solution of benzoic acid and acetone to the solution and let it stand to generate white slurry.

In silicon tetrachloride purification, boron is the most difficult impurity to remove. Researchers have proposed compound method to remove boron from silicon tetrachloride, which has achieved satisfactory results and has been widely used in industrial production.

Distillation is the use of SiCl4, and the difference between the relative volatility of impurities components, through several partial gasification and partial condensation process, to achieve the separation of mixed liquid, so as to obtain high purity silicon tetrachloride products.

The invention relates to a tail gas refining method, especially a method for hydrogenation of aniline to produce dicyclohexylamine tail gas deamination and hydrogen refining, which belongs to the technical field of chemical industry.

Cyclohexylamine, an organic compound with the chemical components of c6h13n, is a drab to yellow liquid, soluble in water and miscible in most organic solvents. It is mainly used as a solvent, and can also be used to prepare desulfurizer, rubber antioxidant, vulcanization accelerator (CZ), cyclamate, medical raw materials, chemical additives for plastics and textiles, boiler feed water treatment agent, metal corrosion inhibitor, emulsifier, preservative, antistatic agent and latex coagulant. 

Chlorine hydrogenation technology is to add HCl on the basis of low temperature hydrogenation technology to further reduce the reaction temperature and increase the yield of trichlorosilane. Chlorine hydrogenation reaction principle is as follows: 2SiCl4(g)+H2(g)+HCl(g)+Si(s)=3SiHCl3(g). Hydrogen plasma is generated by hydrogen discharge, which is passed into the reactor to react with silicon tetrachloride gas. Since hydrogen is dissociated into hydrogen atoms, the reactivity is greatly increased and it can easily react with silicon tetrachloride to form trichlorosilane.

In recent years, China's polysilicon production has shown geometric development, but the disposal of polysilicon by-product silicon tetrachloride has become a difficult to step over the development of polysilicon industry "sill", let the silicon industry wear the hat of high pollution.

The process relates to a tail gas refining method, in particular to the hydrogenation of aniline to prepare cyclohexylamine and the deamination of dicyclohexylamine tail gas to refine hydrogen.

Silicon tetrachloride is an important chemical raw material, it is widely used to produce high-purity silicon, silane, silicone ester, silicone oil, silica gel and other products, widely used in ink, paint, resin, rubber, medicine, grease and other fields; Silicon tetrachloride can also be used to manufacture optical fiber, polysilicon, silicon dioxide, etc., in communications, photovoltaic power generation, optical instruments and other fields of application; In addition, silicon tetrachloride can also be used in the military field, metallurgy, casting and other fields.

Cyclohexylamine, an organic compound with the chemical formula of C6H13N, is a colorless to yellow liquid, soluble in water and miscible in most organic solvents. UsageIt is mainly used as solvent, and can also be used to prepare desulfurizer, rubber antioxidant, vulcanization accelerator, chemical additives for plastics and textiles, boiler feed water treatment agent, metal corrosion inhibitor, emulsifier, preservative, antistatic agent, latex coagulant, petroleum additive, bactericide, insecticide and dye intermediate.SpecificationProjectItemBest gradeFirst grade    

The invention relates to a synthesis method of dicyclohexylamine, which comprises the following steps: in a hydrogenation reactor, aniline and hydrogen are hydrogenated in gas phase under the catalyst to obtain DCHA crude product.The replacement reaction was carried out with aniline and DCHA crude product to obtain the replacement mother liquor. The replacement mother liquor was delight and refined, and DCHA product was obtained at the top of the refining tower.

Silicon tetrachloride is an important raw material and intermediate product in the process of organic silicon synthesis and polysilicon production. Under different environmental conditions, silicon tetrachloride can react with a variety of substances to produce new substances.

The basic principle of solid adsorption is adsorption separation based on the different polarity of chemical bonds of each component in a compound. Silicon tetrachloride is a symmetric molecule with no dipole moment. In contrast, the contained impurities such as BCl3, AlCl3, FeCl3, PCl3, etc. are asymmetric molecules with considerable dipole moments, which strongly tend to form additive chemical bonds and are easily adsorbed by the adsorbent.