84results about How to "Reduce the severity of the reaction" patented technology

The present invention discloses one-section cascade hydrocracking process, and features the hydrocracking unit comprising one hydrocracking pre-treating reactor filled with pre-treating catalyst and hydrocracking catalyst and one hydrocracking reactor filled with hydrocracking catalyst and post-hydrotreating catalyst connected serially. Compared with available technology, the hydrocracking unit of the present invention has the advantages of raised integral activity, increased treating capacity or increased operation period, and raised product quality.

The invention relates to a method used for smooth and steady preparation of 2-methoxypropandioic acid ethyl methyl ester. The method comprises following steps: (a) methyl methoxyacetate and diethyl oxalate are delivered into a reaction container, and a mixed solution is obtained via mixing; (b) solid sodium methylate is dispersed in diethyl oxalate, an obtained mixture is added into the mixed solution dropwise, and an obtained mixed material is reacted for 2 to 8h at a temperature of 50 to 60 DEG C so as to obtain a reaction liquid; (c) an organic solvent, water, and an acid solution are delivered into another reaction container for mixing, the reaction liquid is added, a temperature of an obtained material is controlled below 15 DEG C, pH value is adjusted to 1 to 2, and the material is allowed to stand so as to obtain a water layer and an organic solvent layer; (d) the organic solvent layer is collected and is subjected to distillation so as to remove the organic solvent, and an obtained product is subjected to decarbonylation at a temperature of 178 to 182 DEG C under a vacuum degree of -0.04 to -0.053MPa for 2 to 6h, and fractions obtained under a vacuum degree of -0.095MPa at a temperature above 170 DEG C are collected. According to the method, solid sodium methylate is dispersed in diethyl oxalate which is not too active, and then the obtained mixture is added into the mixed solution dropwise, so that reaction fierce degree of the whole system after adding of solid sodium methylate can be reduced effectively, and smoothness of the reaction is ensured.

The present invention relates to a technology of filming on the anode surface of a lithium-ion battery by the magnetic control sputtering method. The positive plate of the common lithium-ion battery is gained through film preparation and is cut into the needed size and put to a sample chamber of a magnetic control sputtering device; a proper target material is put to a sputtering chamber of the magnetic control sputtering device; the sputtering power is set between 40 W and 60 W and the sputtering time is set between 2 min and 30 min and then the positive plate is gained through filming. The positive plate has better cycle performance, charge-discharge capacity and thermal stability, and improves the safety performance of the lithium-ion battery under the conditions of overcharge, overdischarge and misuse.

The present invention discloses a method for producing 2-ethylhexyl alcohol sulfate salt. The method is as below: injecting different inlet 2-ethylhexyl alcohol and a liquid sulfonating agent into a micro-reactor from different inlets of the micro-reactor, mixing and conducting a sulfonation reaction; controlling the reaction temperature at 5-50 DEG C, staying the reaction products in the micro-reactor for 0.5 milliseconds to 5 seconds, and then sending the reaction products into a micro-mixer connected with the micro-reactor to neutralize with a neutralizing agent, and aging for 0-30 min after neutralization, so as to obtain a transparent light yellow 2-ethylhexyl alcohol sulfate salt liquid. The method uses liquid-liquid phase reaction for synthesis of 2-ethylhexyl alcohol sulfate salt, not only obtains a high yield of 100%, but also does not produce any waste gas and waste requiring subsequent treatment. The method simplifies the production process, and improves the production effectiveness.

The invention discloses a coal tar suspended bed hydrocracking method which comprises the steps of pretreating coal tar; mixing the coal tar with a catalyst and a catalyst promoter to form even raw material oil slurry; putting the raw material oil slurry into a suspended bed reactor; enabling a reaction product to enter a hot high-pressure separator, a warm high-pressure separator, a cold high-pressure separator and a cold low-pressure separator; separating the reaction product; circulating separated hydrogen; enabling separated liquid and catalyst to enter an atmospheric vacuum device to distill out a product and a catalyst, wherein the catalyst can be used circularly. The method has the advantages of low back mixing degree of materials in the reactor, wide raw material adaptability and flexibility in operation.

The invention relates to a composite calcium sulfonate lubricating grease composition and a preparation method thereof. The composite calcium sulfonate lubricating grease composition is prepared from the following raw materials in percentage by weight: 18 to 44 percent of high-base-number calcium sulfonate, 0.3 to 3 percent of glacial acetic acid, 3 to 8 percent of water for conversion, 1 to 4 percent of alkyl benzene sulfonic acid, 0.1 to 3 percent of calcium carbonate, 1 to 5 percent of fatty acid, 1 to 5 percent of a boric acid solution counted by using boric acid, 1 to 4 percent of a calcium hydroxide solution counted by using calcium hydroxide and the balance of base oil. The composite calcium sulfonate lubricating grease composition has the advantages of high dropping point, good extreme pressure antiwear property, excellent colloid stability and mechanical stability, and has a wide application range. The invention further relates to the preparation method for the composite calcium sulfonate lubricating grease composition.