36results about How to "Mild operating temperature" patented technology

The present invention relates to a technological process for extracting cyclophosphoadenosine from jujube. Said technological process includes the following steps: breaking, soaking, filtering soaking liquor, using ultrasonic technique to extract filter residue, combining extracts to obtain clear jujube juice; making the clear jujube juice be passed through ion exchange column, then making the eluent be again passed through ion exchange column, making the obtained secondary eluent be passed through chromatographic column, collecting solution containing cyclophosphoadenosine concentrating and crystallizing in ethyl alcohol so as to obtain high-purity cyclophosphoadenosine.

The invention discloses a chemical coarsening and metallizing process for calcium magnesium titanate ceramic, belonging to the technical field of ceramic surface treatment. The invention aims to solvethe problem of poor adhesive force of a subsequent coating due to the fact that an effective coarsening process for the calcium magnesium titanate ceramic has not been reported in the industry at present. According to main points of a technical scheme in the invention, the process is characterized by specifically comprising the following steps of oil removing, roughening, adjusting, activating, peptizing, chemical copper plating and electroplating. With the process, the surface of the calcium magnesium titanate ceramic can be effectively roughened; the surface roughness of a ceramic sample before roughening is 0.4-0.5 micrometer, and the surface roughness of the sample after roughening is 0.8-1.0 micrometer, so good adhesive force is provided for a subsequent metal plating layer; technological operation is convenient, the whole process is a wet process, operation temperature is relatively mild, and risks are relatively low; and in addition, requirements on equipment are reduced, and the production cost of a product is also reduced.

The invention discloses a low-etch cleaning fluid for photoresist and compositions thereof. The low-etch cleaning fluid for the photoresist comprises (a) quaternary ammonium hydroxide, (b) polyol containing two or three carbons, (c) polyol containing five or six carbons, (d) water, and (e) other cosolvents. The low-etch cleaning fluid for the photoresist can highly-efficiently remove the photoresist on semiconductor wafers, basically has no attack to base materials such as aluminium, copper, etc., and has good application prospect in the fields of semiconductor wafer cleaning and the like.

The invention discloses a catalyst for preparing 3-pentanol through 3-pentanone hydrogenation. The catalyst comprises a carbon-based carrier and a multi-metal component recorded as M1-M2-M3/C, wherein M1 is selected from one of Ru, Mn and Ag; M2 is selected from one of Ir, Au and Cu; and M3 is selected from one of La, Ce and Y. The catalyst is applied to the liquid phase 3-pentanone hydrogenation process. The conversion rate of 3-pentanone can be 100 percent within a short time, and the selectivity of the 3-pentanol is 100 percent. The invention also provides a method for preparing the catalyst, and the industrial preparation is easily realized.

The invention relates to a preparation method of verbascoside, particularly relates to a method for preparing a high-pure verbascoside product from callicarpa nudiflora by adopting a supercritical fluid extraction technique, and a use of the verbascoside product obtained by the preparation method as a standard substance. The supercritical fluid extraction technique adopts the following extraction conditions: the amount of an entrainer is 0.2-0.5 time of the raw material mass, soaking is carried out for 12-24 h, under the conditions of the pressure of 35 MPa and the temperature of 60-70 DEG C, static extraction is carried out for 0.1-0.5 h, and then dynamic extraction is carried out for 1.5-2 h at the speed of 0.1-1.0 L/min. The entrainer is composed of water, methanol, n-hexane and ammonia water with the volume percentage ratio of 55%:15%:25%:5%.

The invention provides a photoresist cleaning liquid comprising potassium hydroxide, hydramine, pentaerythritol, hexol, and a cosolvent. The cleaning agent has high cleaning capacity, and low corrosion to semiconductor wafer patterns and substrates.

The invention provides a method for extracting magnesium by means of high-pressure carbonization.The method includes steps of uniformly mixing water with raw materials with magnesium to obtain reaction slurry; carrying out carbonization reaction on the reaction slurry and carbon dioxide gas under the condition of gauge pressures of 1-5 MPa to obtain serous fluid; keeping the reaction pressures and separating solid from fluid in the serous fluid to obtain fluid with heavy magnesium; reducing the pressures and decomposing the fluid with the heavy magnesium to obtain decomposed serous slurry; separating solid from fluid in the decomposed serous fluid to obtain solid and drying the solid to obtain magnesium-rich products.The method has the advantages that the method can be applied to utilizing magnesium-rich minerals such as magnesite and magnesium-rich solid waste such as boric sludge, the carbonization magnesium extraction efficiency and the calcium and magnesium separation efficiency can be improved, and energy consumption and the economic cost can be reduced to a great extent; as compared with existing processes for extracting magnesium, the method is mild in operation temperature, little in variation, low in energy consumption and heat exchange difficulty and easy to implement, required equipment is small, and the like.

The invention discloses a process for gasification production of synthesis gas through a low temperature entrained-flow bed by using ultrafine powder. The process comprises the steps: spraying an ultrafine gasified raw material which is pulverized to less than 75 [mu]m and a gasification agent into a gasification furnace from the top of the gasification furnace of the entrained-flow bed, performing a reaction on the gasified raw material and the gasification agent so as to generate the synthesis gas containing carbon monoxide and hydrogen at a gasification temperature of lower than 1300 DEG C, spraying chilled water during downward flow of the synthesis gas, and reducing the temperature of the gas so as to meet requirements for the entrance temperature of a cyclone separator, wherein the entrance temperature of the cyclone separator is generally lower than 900 DEG C; discharging the gas with ash slag from a lower outlet of the gasification furnace after cooling, introducing the gas directly into the cyclone separator, removing most of coarse particles and a part of fine ash which are carried by the gas, then introducing the obtained gas into a waste heat boiler for further cooling of the gas, generating steam at the same time, finally introducing the gas into a filter so as to remove fine dust entrained in the gas, and sending the obtained gas to a subsequent section. In the gasification process, the ash slag does not have to reach a melt flow state, and the process is particularly suitable for production processes of low-activity coal and gasification of coal with a high-ash fusion point.

The invention discloses a uvioresistant polyethylene non-woven fabric. A polydopamine layer and a titanium dioxide layer are sequentially adhered to the surface of the polyethylene non-woven fabric. The invention also discloses a preparation method of the uvioresistant polyethylene non-woven fabric, which comprises the following steps of S1, soaking the polyethylene non-woven fabric in a dopamine solution, washing, and drying to obtain an intermediate fabric; and S2, soaking the intermediate fabric in the titanium dioxide dispersion liquid, washing and drying to obtain the uvioresistant polyethylene non-woven fabric. The uvioresistant polyethylene non-woven fabric provided by the invention has high ultraviolet resistance and antibacterial performance, and good mechanical properties.

The invention discloses an efficient hydrogen storage device. The efficient hydrogen storage device comprises an inner container as well as an outer container and a cold insulation layer which are sequentially coated, wherein the inner container is filled with a filler, and the filler is formed by sintering a composite material of graphene and magnesium and is cylindrical; the inner container is made of an aluminum alloy material; and the composite material of graphene and magnesium is stretched into a filiform structure or a sheet structure, and then prepared into the filler. The novel hydrogen storage device has the advantages of mild operation temperature, low hydrogen storage pressure and the like, a hydrogen storage process is simple and high in automation degree, the adopted equipment is reliable, the preparation cost and liquefaction cost of hydrogen are increased, and remarkable economic benefits are achieved.

The invention discloses a purifying method of biodiesel. The purifying method is characterized by purifying crude biodiesel by adopting a percolation system, thus obtaining the biodiesel, wherein thepercolation system at least comprises one percolation tower taking thermal activated bauxite as filler. According to the purifying method disclosed by the invention, the percolation tower taking the thermal activated bauxite as the filler is adopted for percolating and purifying the crude biodiesel, and the adsorption ability on impurities such as polar molecular water, methanol, sterol, glycerinum, phospholipid, acid-base catalyst residue and free fatty acid in the crude biodiesel is increased by utilizing strong adsorption and filtering functions and high purifying resolution of the thermalactivated bauxite on the impurities, so that the biodiesel with higher quality and higher purity is obtained; meanwhile, the acid value of the biodiesel is reduced, mixing of poor impurities is avoided, the quality of the biodiesel is increased, and the purifying efficiency is high.

The invention provides a treatment system for divinyl benzene production tail gas. The treatment system comprises a tail gas absorption tower, a first desorption tower and a second desorption tower, wherein the first desorption tower and the second desorption tower are respectively connected with the tail gas absorption tower. By means of the absorption tower and the two desorption towers connected with the absorption tower in parallel, a good recovery effect is achieved, and meanwhile the device has the advantages of being easy to operate and easy to control.

The invention relates to synthesis of kits, in particular to a D-amino acid detection kit and a detection method thereof. The kit contains D-amino acid enzyme, a 1, 4-benzeneboronic acid solution anda gold nanoparticle solution, wherein the volume ratio is 1: (1-5): (10-20). The kit is simple and easy to operate, can realize green and pollution-free D-amino acid detection, and has potential application value in the research fields of molecular biology, bioanalytical chemistry, marine science, tumor science and the like.