69results about How to "Uniform reaction temperature" patented technology

Provided are slurry bubble column technology for preparing ethylene through acetylene hydrogenation and a device thereof. The slurry bubble column technology includes adding water and then catalyst into a reactor, filling inert gases for replacing, heating, leading gas mixture of acetylene and hydrogen to enter in the reactor for reacting from the bottom of the reactor through a gas distributor, finally exhausting reaction products and unreacted feed gases from the top of the reactor, and separating to obtain the ethylene. The unreacted feed gases and the feed gases are mixed and then enter the reactor again for reacting. The reactor comprises a reaction gas inlet at the bottom, the gas distributor and a material liquid exhaust port, a reactor barrel body is arranged on an expended section on the upper portion of a slurry bubble column reactor, and a catalyst feeding port and a gas outlet are arranged at the top of the reactor. The slurry bubble column for preparing the ethylene through the acetylene hydrogenation is simple in structure, overcomes the phenomenon of temperature runaway in a fixed bed reactor and improves the conversion rate and selectivity of the reaction, and the operation is easy to control.

The invention provides a preparation method of ethyl acetate and/or isopropyl acetate. Catalytic dry gas from an oil refinery is used as a dilute ethylene and/or dilute propylene raw material and is introduced into a reaction system with a strong solid acidic catalyst to perform an addition esterification reaction so as to produce ethyl acetate and isopropyl acetate. The dry gas required by the method directly comes from a dry gas desulfurization treatment device of the refinery, the addition reaction pressure is low, continuous production of the ethyl acetate and isopropyl acetate can be realized by using dilute ethylene and/or dilute propylene, i.e., low-concentration ethylene and/or propylene, serving as raw material(s), the device investment is saved, the energy consumption is low, and the preparation method belongs to an advanced technology for new utilization of the catalytic dry gas.

The invention relates to an oxidizing reaction device. The oxidizing reaction device comprises a reaction area, a gas-liquid distribution area and a material supporting member. The gas-liquid distribution area is arranged below the reaction area, and the material supporting member is used for supporting a reactant in a first cavity and arranged at the bottom end of the reaction area. The gas-liquid distribution area comprises a second cavity, a gas collection chamber, more than one gas distribution pipe and a ventilation opening, the gas collection chamber is arranged in the second cavity, one end of each gas distribution pipe is arranged at the peripheral edge of the gas collection chamber, and the ventilation opening is arranged below the gas collection chamber. At least one air hole is formed in each gas distribution pipe. By adopting the oxidizing reaction device, the gas, material liquid and temperature can be uniformly distributed in a reaction system, the reaction time is reduced, and the reaction speed is increased.

The CS2 reactor furnace includes inner furnace body of refractory material, outer furnace body of refractory material, and heating chamber between the inner surface body and the outer furnace body. In the peripheral of the inner surface body, there are sulfur gasifying furnace and carbon material preheating furnace, and the sulfur gasifying, furnace is connected via sulfur vapor duct to the bottom of the inner furnace body. The CS2 reactor furnace of the present invention has no sulfurizing and oxidizing corrosion of inner furnace body and thus long service life. The material preheating speeds the reaction and raise the product yield. Heating the coal-burning gas furnace via the main fire channel communicated with the furnace body can save fuel and stabilize furnace temperature.

The invention discloses a bipyramid rotary superconducting waste cracking furnace which is composed of a bipyramid superconducting isothermal rotary furnace body, a rotary furnace body driver, a heater and a feeding machine. The bipyramid rotary superconducting waste cracking furnace is characterized in that the bipyramid superconducting isothermal rotary furnace body is a bipyramid composite pipeisothermal superconducting rotary furnace body with two small ends and a thick middle composed of a metal inner pipe and a metal outer pipe which are concentric, the thick portion in the furnace bodyis a superconducting working medium heating pool, and a circumferential heating zone provided with heat exchange sheets is arranged on the periphery of the heating pool. The heater heats the furnacebody outside the furnace body through self-produced gas of the waste cracking furnace, produced radiant heat is rapidly and evenly transferred to waste in the rotary furnace through the circumferential heating zone, the heating pool and the bipyramid composite pipe isothermal superconducting rotary furnace body, and therefore the waste is rapidly and efficiently cracked and gasified. By means of the cracking furnace, the risk that bonding, bulging, blocking and coking are caused by local overheating of waste in the furnace is avoided, flue gas is prevented from being produced, pollution of harmful substances released by cracked materials to environment is avoided, dioxin emission is effectively restrained, and environment is protected; and cracked solid waste can be used as activated carbon for preparing chemical raw materials, and the overall economic benefits are obvious.

The invention discloses a hydrotreating method for heavy hydrocarbon raw materials. According to the invention, a fixed bed hydrogenation reactor is employed; at least two catalyst beds are arranged in the fixed bed hydrogenation reactor; a solvent is introduced at least from one gap formed by two adjacent catalyst beds and is mixed with reacting materials, and light components are extracted; the light components are introduced out from the reactor in an extraction and separation area between two adjacent catalyst beds, and heavy components enter into next catalyst bed for further reaction; extracted oil can directly enter into a gasoline/diesel hydrogenation device so as to obtain qualified gasoline/diesel and can also enter into an FCC main fractionating column for fractionation so as to obtain a crude product which enters into the gasoline/diesel hydrogenation device so as to obtain qualified gasoline/diesel. The method provided in the invention can effectively reduce pressure drop of beds in fixed bed hydrotreatment, prolong the service life of a catalyst, improve a total conversion rate of a fixed bed hydrogenation apparatus and enhance treating capacity of an apparatus under the condition of a same conversion rate, thereby creating greater benefits for an enterprise.

The invention provides a separation system and method for carbon dioxide in a medium-high pressure air source. CO2 rich liquor from an absorption tower is subjected to pressure reduction and regenerated step by step in modes such as flash evaporation, high-pressure desorption and low-pressure desorption, the high-pressure characteristic of a CO2 air source is fully used, and input of external heatconsumption is reduced; the low-energy-consumption and low-cost requirements are met; high-temperature desorbed air of the tower top of a high-pressure desorption tower is introduced into a reboilerof a low-pressure desorption tower and used for a heating desorption heat source, external heat consumption required by the low-pressure desorption tower is reduced, and meanwhile the cooling-water consumption of a desorbed air cooler is reduced; barren liquor and semi-barren liquor from the high-pressure desorption tower and the low-pressure desorption tower enter from an upper-section filler anda lower-section filler of the absorption tower respectively, reaction temperatures at all portions of a tower body can be kept uniform, it is avoided that the local temperature is over high, and degradation and loss of an absorbent are reduced. According to the separation system and method for carbon dioxide in the medium-high pressure air source, the high-pressure characteristic of the CO2 air source is fully used, the input of the external heat consumption is reduced, and the low-energy-consumption and low-cost requirements are met.

The invention belongs to the field of clinical medical diagnosis and especially relates to a microballoon-based cup-type time resolution fluorescent procalcitonin analysis kit, a preparation method and an application thereof. The kit comprises a detection reaction cup, a fluorescence labeling antibody and a cleaning fluid. The method comprises the following steps of: in specific detection process, firstly drawing a standard curve; adding a to-be-detected sample into the detection reaction cup; adding the fluorescence labeling antibody; incubating at 30-40 DEG C; washing with the cleaning fluid and removing the uncombined antibody and fluorescence labeling antibody; and comparing a fluorescence signal with the standard curve, thereby acquiring the concentration of procalcitonin of the to-be-detected sample. The detection method for the procalcitonin is ultrahigh in sensitivity, so that the automatic operation can be easily realized; the reaction temperature is uniform; the method is not influenced by the environmental factor; the accuracy is better; the precision is excellent.

The invention discloses a production device of a RI-01 crude oil demulsifier. The production device mainly comprises an autoclave (D101), a reaction kettle (D102), and a mixing kettle (D103), whereinthe autoclave (D101) is connected with the mixing kettle (D103), the reaction kettle (D102) is connected with the mixing kettle (D103), and the autoclave (D101) has a nominal volume of 700-760 L.

A sputtering apparatus is provided. The sputtering apparatus comprises cooling water system having a temperature-controlling device for controlling the temperature of the sidewalls of the reaction chamber. During the deposition process of titanium/titanium nitride, the sidewall temperature of the chamber is controlled at about 50° C.˜70° C. for reducing the difference of temperature distribution in the chamber so that the reaction temperature within the reaction chamber can be rendered substantially uniform.

The invention belongs to the field of clinical medical diagnosis and especially relates to a microballoon-based cup-type time resolution fluorescent troponin I analysis kit as well as a preparation method and application thereof. The kit comprises a detection reaction cup, a fluorescence labeling antibody and a cleaning fluid. The method comprises the following steps of: in a specific detection process, firstly drawing a standard curve; adding a to-be-detected sample into the detection reaction cup; adding the fluorescence labeling antibody; incubating at 30-40 DEG C; washing with the cleaning fluid and removing the uncombined antibody and fluorescence labeling antibody; comparing a fluorescence signal with the standard curve, thereby acquiring the concentration of troponin I of the to-be-detected sample. The detection method for the troponin I is ultrahigh in sensitivity, so that the automatic operation can be easily realized; the reaction temperature is uniform; the method is not influenced by the environmental factor; the accuracy is better; the precision is excellent.

The invention discloses a method for synthesizing cinnamyl alcohol through selective hydrogenation of cinnamyl aldehyde. A tubular reactor is adopted, a small-particle solid special catalyst is arranged in the tubular reactor, the cinnamyl aldehyde and hydrogen are used as reaction raw materials, and the cinnamyl alcohol is synthesized by catalyzing the cinnamyl aldehyde to be selectively hydrogenated under the conditions that the reaction temperature is 50-120 DEG C and the reaction pressure of hydrogen is 0.5-5.0 MPa. Compared with the traditional kettle type, fixed bed and trickle bed reactors, the method provided by the method can obtain higher cinnamyl alcohol selectivity, cinnamyl alcohol yield and stability, and has better economic benefits.

The invention discloses a preparation method of ultrahigh-molecular-weight polyacrylamide. The preparation method comprises the following steps: (1) preparing an acrylamide aqueous solution; (2) adding the acrylamide aqueous solution into a reactor provided with a liquid internal heat conduction device, introducing water of 6-7 DEG C into a water filling nozzle of the liquid internal heat conduction device, starting a stirrer of the liquid internal heat conduction device, introducing nitrogen to remove oxygen, and adding an initiating agent to perform polymerization reaction, thereby preparing a polymerization product; and (3) cutting and granulating the polymerization product, and then adding the polymerization product into a hydrolyzer to perform hydrolysis reaction, thereby preparing ultrahigh-molecular-weight polyacrylamide. According to the preparation method disclosed by the invention, by adopting reasonable proportioning, combining corresponding process conditions and adopting the self-made liquid internal heat conduction device to uniformize the reaction temperature and stabilize the molecular weight of polyacrylamide, the molecular weight of prepared polyacrylamide reaches 3.4*10<7>.

The invention discloses a cup-type time-resolved fluorescent analysis method and kit for NT-proBNP based on microspheres. The method comprises the following steps: coating the interior surface of a detection reaction cup with a NT-proBNP monoclonal or polyclonal antibody; subjecting time-resolved fluorescent microspheres and the NT-proBNP monoclonal or polyclonal antibody to crosslinking via a covalent bond so as to prepare a fluorescence-labeled antibody; adding a to-be-detected NT-proBNP sample into the coated detection reaction cup, then adding the fluorescence-labeled antibody and carrying out incubation at 25 to 40 DEG C; carrying out cleaning to remove unbounded antigen and fluorescence-labeled antibody and testing a fluorescence signal in the detection reaction cup under the condition of excitation by exciting light with a wavelength of 340 to 380 nm; and comparing the fluorescence signal with a standard curve so as to obtain the concentration of NT-proBNP in the to-be-detected NT-proBNP sample. The method and kit provided by the invention can complete detection in short detection time, shortens detection time and improves detection sensitivity.