Posted on Tue, 16 Mar 2021 02:44:39 +0000
Rosin deep processing — application of esterification reaction Resin acids can react with a variety of alcohols to produce corresponding esters, such as methyl esters, glycerides, etc. Due to the higher steric hindrance of the carboxylic group of the resin, this reaction requires higher tem...
Read MorePosted on Mon, 15 Mar 2021 06:59:02 +0000
When choosing a dry screw vacuum pump, what are the requirements for suction pressure? Let’s understand together, there are three main requirements for the suction pressure of dry screw vacuum pumps. The first aspect: due to losses along the way, the suction pressure at the filter is always...
Read MorePosted on Mon, 01 Mar 2021 05:27:46 +0000
At present, our country’s industrial kiln industry is enduring and becoming more and more important. The operation process in the kiln industry will use multi-air pulverized coal burners such as three-air ducts or four-air ducts. In order to cooperate with the work of the pulverized coal bu...
Read MorePosted on Fri, 26 Feb 2021 05:36:22 +0000
Water ring vacuum pump with Air ejector vacuum unit For water ring pumps, even if a two-stage pump is used, the increase in ultimate vacuum is only within a certain range, because it is limited by water saturation and vapor pressure. In order to improve the ultimate vacuum of the backing pump, it...
Read MorePosted on Tue, 23 Feb 2021 05:55:28 +0000
Single-acting liquid ring compressor and double-acting liquid ring compressor There are two types of liquid ring compressors, single-acting liquid ring compressors and double-acting liquid ring compressors. Although the two types of liquid ring compressors are used for gas compression and transpo...
Read MorePosted on Mon, 22 Feb 2021 07:06:14 +0000
The vacuum tube furnace is no longer unfamiliar. The basic style is cycle operation. Usually industrial and mining enterprises, laboratories, scientific research institutions, etc. use vacuum tube furnaces for heating of small steel parts such as quenching, annealing and tempering. As the name im...
Read MorePosted on Sun, 21 Feb 2021 05:38:20 +0000
Roots blower provides new driving force for the development of biogas industry Biogas is a secondary energy source and a renewable energy source. As a new type of energy-saving and environmentally-friendly energy, it has been more and more popular in the environment of energy-saving and environme...
Read MorePosted on Sat, 20 Feb 2021 05:52:10 +0000
How is the price of Roots blower affected? At present, the price of Roots blower in the market is very confusing, leading buyers to focus on the “price” when purchasing Roots blowers, while ignoring the quality problems of the product itself and the later after-sales service problems....
Read MorePosted on Wed, 17 Feb 2021 06:17:42 +0000
Selection of working steam pressure Generally, the higher the working steam pressure, the less working steam and cooling water will be consumed. However, when the working steam pressure is too high, the above rules are not obvious. This is because too high steam pressure will result in increased ...
Read MorePosted on Mon, 15 Feb 2021 06:49:17 +0000
Reaction principle and production process of common organic chemical – D-2-chloropropionyl chloride 1.Reaction Principle Ethyl L-lactate and sulfoxide chloride were successively pumped into the reactor, heated for reaction, and ethyl 2-chloropropionate was obtained after distillation. Wate...
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