The set of coiled tube heat exchanger equipment is used for the 600,000 tons/year methanol coal chemical project of Huating Zhongyu Coal Chemical Industry Co., Ltd. Heavy tonnage, 8 sets of high-pressure coiled heat exchangers weigh up to 98 tons, lightest also has 6 tons; high pressure, pressure rating up to 8.3MP, is the company's highest pressure in the coal chemical industry around the tube change Heater; long diameter, equipment up to 20 meters, heat exchange tube up to 1600 units. In order to complete this project, the Kaifeng air separation needs to expand the model specifications of the existing coiling machine accordingly, so as to form a new large-scale coiled tube heat exchanger production capacity.
It is understood that since the 90s of last century, Kaifeng Airspace has actively participated in the experiment and research work of domestic chemical fertilizers for low-temperature methanol-washed pipe heat exchangers. In 1997, they successfully applied the first domestic E7 high-pressure coiled heat exchanger to Ningxia Chemical Plant. Up to now, Kaifeng air separation has successfully provided more than 20 coiled heat exchangers to China's chemical industry, coal chemical industry, and nuclear power industry, and has gradually become an important base for research and production of high-pressure coiled heat exchangers in China.
Chromium(III) sulfate usually refers to the inorganic compounds with the formula Cr2(SO4)3.x(H2O), where x can range from 0 to 18. Additionally, ill-defined but commercially important "basic chromium sulfates" are known. These salts are usually either violet or green solids that are soluble in water. It is commonly used in tanning leather.
Since 33% of the anion charges are due to hydroxy ions the basicity is 33% (but in tanning jargon it is known as 33% reduced). Products with higher basicities, e.g. 42% or 50% may be obtained by the addition of sodium carbonate, these are often used in combination with Sodium Formate. The sodium sulfate is often left in the technical product since it is inert with respect to the tanning process. It is important to fully reduce the hexavalent chromium to trivalent since the hexavalent is more likely to cause health problems for tanners and leather consumers.
Basic Chrome Sulphate,Basic Chrome Sulfate for Tannery,Tanning Agent Basic Chrome Sulfate
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