Xylene Migration And Transformation

Xylene is mainly used in chemical industry. The industries who use xylene more are organic solvents and synthetic medicine. Such as paint, resins, dyes, detergents, detergent, pesticide, dynamite and so on. Xylene is also one of the components for aviation fuel.

Xylene can discharged into water bodies with the industrial wastewater in the process of industrial production. But there is no persistent pollution to water because that the xylene has strong fugacity in the water.

Generally speaking xylene will degrade in the environment. Xylene transfer speed is slower than the volatile speed in aqueous solution. The xylene will also be photolysis after volatile into the air. The photolysis process is the main migration and transformation process. The xylene harm is not badly than we imagine. The xylene incoming and metabolism to human body is very fast. However the xylene in the human body could excreted totally if it stop to contact with xylene in 18 hours. At the same time, it has no effect on human health. So not contacting or incoming the xylene will not affect human health unduly. Xylene is belong to moderate flammable items and xylene vapor is heavier than the air. So xylene often close to the ground and spread along the ground when burning.

Production Technology In Aniline Industry

Aniline is regarded as an organic intermediates. It is widely used in synthetic materials, rubber additives,dyes,pigments,pharmaceuticals and other organic chemical products. Recent years, with the demand of global polyurethane raw material MDI growth, it has become the main consumer areas of aniline. According to statistics, global aniline capacity has been reached 3.773 million t/a in 2004, annual output is 2.315 million tons and the apparent consumption was 2.24 million tons.

Aniline industry has began in 1857. Aniline industry adopt nitrobenzene iron reduction method. This method needs big equipment and also in serious corrosion, big iron consumption, serious pollution. Catalytic hydrogenation of nitrobenzene method instead of it until 1950s. At present, this method has accounted for 85% of the total capacity of aniline. Phenol ammoniation is occupied about 10% and iron powder reduction method is occupied about 5%.

Nitrobenzene iron reduction method is using intermittent production and reduction nitrobenzene into aniline through hydrochloric acid medium under about 100 ℃. There are many devices adopt this method in China because that method can  byproduct of iron oxide pigments. The rapid development of MDI and other downstream products brought hitherto unknown opportunities to the development of aniline industry. The experts recommended that small and medium sized enterprises must develop Adiabatic Nitration Technology with independent intellectual property rights, reduce energy consumption and cost in order to improve China’s aniline industry competitiveness in the international market.

Hydrogen Peroxide Storage

Hydrogen peroxide is usually storage in a warehouse which is cool and  ventilated. The storage temperature can not exceed 30 degree and keep far away from fire and heat source. The container should keep seal up and separate it with flammable, reducing agent, active metal powder and others. Don’t mixed storage. The storage area should be provided with emergency treatment equipment and proper housing materials.

Workers who connect hydrogen peroxide must through specialized training and obey the operation rules strictly. Certainly operation must be in the environment with sealed and overall ventilation. We also suggest that  operator wear self suction filtration mask, polyethylene protective clothing and chloroprene rubber gloves.

Keep away from fire, heat source, flammable and combustible to prevent steam leakage in the air of workplace. Avoid hydrogen peroxide contact with reducing agent, active metal powder. You must move the hydrogen peroxide lightly in order to prevent damaging of packaging and containers. At the same time equipped with the appropriate variety and number of fire equipment and emergency treatment equipment. Empty containers may be left harmful substances.

Hydrogen peroxide has strong oxidation and usually be regard as  oxidizing agent. Hydrogen peroxide is used in medical, military and industrial. Disinfection often use medical hydrogen peroxide in daily life.

Gray Nail Treated By Acetic Acid

If you have got gray nail,you should manicure the bad one at first. It means that thickened parts repaired with a sharp knife, get rid of bad parts and retention of nail bed. Coating with glacial acetic acid after repaired. Do it for two to three times and last three to six months. You had better make the nail thin before coating. Certainly you should repair the bad nail in a week and try to keep a complete nail bed as far as possible. In generally, the treat last about three months and the nail will return to normal.
The high temperature and high humidity are important conditions for tinea disease. So the tinea disease in summer or rain weather is more easily to happen than in winter or dry weather. Of course, living environment of patient can not be ignored. Morbidity with good ventilation is more low than closed and stuffy wet. Personnel crowded place is also high incidence. So,vocational,trades have a great influence on the tinea disease. Especially in the high temperature and high humidity workshop with heavy work clothes. Morbidity will be improved greatly without any device for shower.
Certainly bad personal hygiene habits will lead to the tinea disease. People who connect with public baths and poor sanitation pool are more easy to get tinea disease. If you have fed cat, dog or any other pets, you should be more careful. Because it is more easier to get tinea on their body.

Acetic Acid Fermentation

Acetic acid fermentation is one kind of oxidation fermentation. It is a process that ethanol oxidation into acetic acid under the effect of acetic acid bacteria. Besides there are many kinds of microorganisms can also form acetic acid with various compounds through anaerobic activity. But it generally not called acetic acid fermentation.
Acetic acid bacteria is aerobic bacteria. Fermentation is making under aeration conditions and always with the temperature of the range from 25 to 30 centigrade. Acetic acid bacteria need amino acids and vitamins. So there must be adding yeast extract, koji and other organic matter with nitrogen containing to the fermentation liquid.
There are two types of brewing vinegar, they are solid fermentation and liquid fermentation. For example, for saccharification and alcohol fermentation with the original material of starch, finally making acetic acid fermentation. Solid state fermentation is traditional crafts. There are many kinds of microorganisms participate in and product flavor is good. Liquid fermentation is general for industrialized production. It uses pure culture of the fungus and with large output,lower cost, but the flavor is bad.
Vinegar as a life essential items has the important position in food flavoring. Acetic acid can inhibit the growth of spoilage bacteria. You can be kept vegetables fresh and not corruption with  vinegar pickled. Acetic acid can also be used as a medical disinfectant. Glacial acetic acid is an important raw material for chemical and pharmaceutical, widely used in printing and dyeing industry. Acetic acid are also widely used in textile industry, fiber industry, pesticide industry, dyestuff industry, plastic industry and others.

Using Acetic Acid Carefully

Acetic acid has corrosive. Its irritation has effect on steam eye and nose. So we should be more careful in using the acetic acid. If the skin contact with acetic acid. You should wash with water first, then use the soap to wash thoroughly. Certainly you should be careful when the acetic acid get into your eyes. Wash your eyes with water at first and then clean with dry cloth. If it is serious, you must go to the hospital immediately. In order to avoid these accident, you can wear protective glasses which with chemical safety in the working and wear rubber gloves. After working, you should take a shower and change your clothes. Don’t take the work clothes into the living area. When concentration in the air is exceed the standard, you should wear masks.
We have 99.9%min glacial acetic acid,99.8%min glacial acetic acid,90%min glacial acetic acid,80%min glacial acetic acid or according to the special requirement by customer. Annual capacity of our glacial acetic acid is 350,000. The raw material is methanol.If you swallow the acetic acid, you must be given an emetic and go to hospital. Likewise it is also dangerous to inhaled acetic acid vapor. Far away from the pollution areas to rest and keep warm at the same time.

The Methanol Storage

Methanol is an important organic chemical raw materials, and it is widely used in many industry. It can produce formaldehyde, synthetic rubber, methyl chloride,acetic acid and a series of organic chemical products. It is also used for the synthesis of methanol protein.
Methanol consumption structure in our country is similar to foreign countries, and the largest the consumption field is formaldehyde production. The proportion of consumption is about 40%. The second is MTBE and acetic acid, the proportion is 6% and 7% respectively. However with the needing of protecting the environment and the world oil resources become increasingly scarce, the development of methanol fuel consumption become fast in recent year. It becomes one of the majority power of methanol demand. In addition,along with the two ether entered the civil gas market officially, the demand for methanol is expansion quickly. Now the methanol and  its downstream products is most likely to become the leading alternative products for the the beginning of the post petroleum Era.
Most suitable storage container to methanol is stainless steel containers and plastic tank. The plastic tank use pure polyethylene as raw material and it uses a special rotational molding process to molding the whole. The plastic tan has many advantages, such as no welding, no leakage, non-toxic, light weight, impact resistance, corrosion resistance, integrated and long life. Certainly, it also could store most inorganic acid, alkali, salt solution and most organic solvents, while can partly replace titanium, stainless steel, high nickel alloy steel and other materials. The production is meet the  storage and transportation of dangerous goods regulations and a ideal storage container for  methanol and reaction chemical corrosion, clean solution. Methanol in line with national health standards,can replace the stainless steel container to shipment.