57results about How to "Lower contact temperature" patented technology

The invention relates to a catalytic cracking method for producing low-carbon olefins and light aromatic hydrocarbons. According to the catalytic cracking method, a heavy raw material and a first catalytic cracking catalyst are subjected to a contact reaction in a first reactor; a lightweight raw material rich in saturated hydrocarbons, a lightweight raw material rich in olefins and a second catalytic cracking catalyst are subjected to a contact reaction in a second reactor and a third reactor; all the reaction oil-gas and the spent catalysts are subjected to gas-solid separation; the reactionoil-gas is further separated to obtain a product containing light-carbon olefins and light aromatic hydrocarbons; and the spent catalysts are subjected to steam stripping, the steam stripped catalysts enter a catalyst regenerator, charring regeneration is performed, and the regenerated catalyst returns to the reactor so as to be recycled, wherein the catalytic cracking catalyst comprises, by weight, 15-65% of natural minerals, 10-60% of an oxide, and 25-75% of a Y-type molecular sieve and a phosphorus-containing IMF structure molecular sieve. With the method of the present invention, the yield of low-carbon olefins is high, and the yield of light aromatic hydrocarbons is high.

The invention discloses a catalytic cracking method for hydrocarbon oil. The method is characterized by comprising the following steps of: (1) undergoing a first contact reaction on a hydrocarbon oil raw material and a first cracking catalyst in a first reactor, and performing first oil-agent separation on a mixture of oil gas and the catalyst after the first contact reaction; (2) undergoing a second contact reaction on oil gas obtained after first oil-agent separation and a second newly-added cracking catalyst in a second reactor, and performing second oil-agent separation; and (3) feeding a part of or all of a spent catalyst obtained in the step (2) into the first reactor. The invention further provides catalytic cracking equipment for hydrocarbon oil. Due to the adoption of the method and the equipment, the problem of poor activity in the second reactor caused by great reduction in the activity of the catalyst discharged from the first reactor is solved, and the yields of dry gas and coke can be lowered greatly.

The present invention is catalytic conversion method and apparatus and belongs to the field of petroleum hydrocarbon catalytically converting technology. The catalytic conversion method is that beside the heavy oil reactor of heavy oil reaction-regeneration apparatus, one gasoline reactor sharing the regenerator is connected in parallel, so that catalyst after passing through the gasoline reactor can enter to the heavy oil reactor for being mixed with the regenerated catalyst from the regenerator before reacting with heavy oil. There are one settler set in the outlet of the gasoline reactor and one catalyst conveying pipe set between the settler and the heavy oil reactor. The present invention can raise catalytic cracking yield, improve product quality and, especially, lower the content of olefin in gasoline.

The present invention provides catalytic reaction method and reactor capable of improving reaction condition and raising the product yield. The present invention features that catalyst is made to reflux in the reactor and this can lower the temperature of catalyst contacting with reacted material, increase the practical catalyst amount, inhibit thermal cracking reaction, raise product yield, raise the catalyst inventory and catalyst/oil ratio in the second reaction region, improve product distribution and raise product quality. The reactor of the present invention features its catalyst reflux without affecting the operation of the other parts and without needing improving or increasing depositor. The present invention can raise product yield and lower the olefin content in gasoline product.

The invention provides a manufacturing method of high heat transfer efficiency radiators, comprising the following steps: providing a plate-shaped or barrel-shaped base and a plurality of fins combined with the base, wherein the base and the fins are formed by aluminums; and forming an oxidation film layer capable of improving the thermal radiation emission rate of the base or/and fins on the surface of the base or/and fins through an anode processing technology, wherein the high heat transfer efficiency radiator further comprises a heat pipe; the heat energy of the base is rapidly transferred to the fins to radiate by menas of the heat pipe; or the treatment is performed at anodes of the fins by using a radiator type combined by the heat pipe and the fins to form the oxidation film layer. According to the characteristics, the radiator improves the heat transfer efficiency and simultaneously has the functions of beautiful appearance, easy identification and fouling resistance.

This invention provides a catalytic cracking method, and it will make sure that raw material oil and petroleum react separately in their own demands by using coupling reactors. In order to improve agent-oil ratio, the accelerant with low temperature from petroleum reaction reenters into the pre-upgrading section of raw material oil reaction. It will low the temperature of accelerant of petroleum reaction and improve agent-oil ratio before low temperature accelerant from petroleum reaction recirculating into petroleum reactor before feeding material. The equipment of this catalytic cracker uses coupling reactor, and the accelerant after the reaction of petroleum will be directly send into the pre-promotion section of heavy oil reactivation from petroleum reactor by accelerant transport pipe between the petroleum reactor and heavy oil reactor. The accelerant recirculating pipe designed with petroleum reactor to make part of the accelerant return to petroleum reactor before feeding material. The catalytic cracking equipment is a settling vessel, which will separate the oil gas from different reactor and enter their own fractionating tower to form the program of single settling vessel and coupling fractionating tower to receive pure petroleum upgrading product.

The invention relates to a preparation method of high-immune plasma protein powder. According to the method, fresh plasma liquid of healthy slaughtered livestock and poultry as a raw material, a process method including the steps of inorganic membrane filtering, organic membrane concentrating, reducing sugar adding, high-pressure homogenizing and spray drying is adopted, the prepared high-immune plasma protein powder basically has no blood smell, the protein content of the high-immune plasma protein powder reaches 75% or above, and the immune globulin G content of the high-immune plasma protein powder is increased by 40% or above compared with common plasma protein powder; reducing sugar and plasma immune globulin particles are prepared through reducing sugar adding, homogenizing and centrifugal atomization treating, damage of the high temperature to immune globulin in the spray drying process is reduced through the affinity effect of rich hydrophilic hydroxyl groups in reducing sugar to water, therefore, the activity of the immune globulin is guaranteed, and preparation of the high-immune plasma protein powder is achieved.

The invention discloses an efficient device for producing low-carbon olefin from an oxygen-containing compound in the technical field of petrochemical engineering. The device meets the requirements for rapid reaction, strong heat release, low catalyst-alcohol ratio, high product selectivity and the like of a process for preparing the low-carbon olefin from the oxygen-containing compound, so that the problem of low selectivity of the low-carbon olefin in the prior art is solved, the advantages of the reaction can be brought into play to the greatest extent, and the selectivity of the low-carbonolefin is improved.

The invention relates to the field of petroleum refining and petrochemical processing, and discloses a method for producing propylene by catalytic cracking of hydrocarbons, which comprises the following steps: (1) carrying out a first catalytic cracking reaction on heavy raw oil and a first regenerated catalyst to obtain a first oil mixture; (2) carrying out a second catalytic cracking reaction on the light raw oil and a second regenerated catalyst to obtain a second oil agent mixture; and (3) carrying out a third catalytic cracking reaction on the first oil agent mixture and the second oil agent mixture to obtain a third oil agent mixture, and carrying out separation, prerequisite and regeneration for cyclic utilization; wherein the mass ratio of the heavy raw oil to the light raw oil is 0.5-5: 1; the method further comprises the following steps: introducing a first cooling medium into the outlet of the first riser reactor; and/or introducing a second cooling medium into the stripper, and circulating part of the stripped spent catalyst back to the first riser reactor. The method provided by the invention can improve the propylene selectivity and reduce the yields of dry gas and coke.

The invention discloses a device for producing low-carbon olefin by using an oxygen-containing compound in the technical field of petrochemical engineering, which is suitable for the characteristics of quick reaction, strong heat release, lower agent-alcohol ratio, high product selectivity and the like in the process of preparing the low-carbon olefin by using the oxygen-containing compound, so asto solve the problem of low selectivity of the low-carbon olefin in the prior art. Therefore, the advantages of the reaction can be exerted to the greatest extent, and the selectivity of the low-carbon olefin is improved.

The invention relates to a 10kV 6300A heavy current armored removable switch cabinet comprising a armored cabinet body (1) which is internally provided with a partition board (2); the partition board (2) is respectively provided with a square high-capacity line incoming static contact (7) and a square high-capacity line outgoing static contact (8); an upper valve (11) and a lower valve (12) which can be linked are installed in positions on the partition board (2), respectively corresponding to the line incoming static contact (7) and the line outgoing static contact (8); the upper valve (11) and the lower valve (12) are respectively connected with a driving device (13) installed at the lower part of a circuit breaker truck (14); a lower air intake fan (18) is installed at the lower part of a line incoming chamber (3), and an upper air exhaust fan (19) is installed on the upper part of a circuit breaker chamber (4); and the circuit breaker truck is also provided with a circuit breaker heat radiating fan (20). The invention has simple structure, good heat radiation effect and small size.

The invention discloses a catalytic cracking method and device. The method is characterized by comprising the following steps: introducing raw oil into bottom of a riser reactor to contact and react with a catalyst from a catalyst heat exchanger; separating oil gas after the reaction from a coked catalyst; introducing separated reaction oil gas into a fractionating tower; carrying out steam stripping on the separated coked catalyst and sending the coked catalyst into a regenerator for regeneration; sending part of the regenerated catalyst into the riser reactor from different height positions of the riser; and carry out heat transfer on the other part of the regenerated catalyst by a heat exchanger and entering the other part of the regenerated catalyst into bottom of the riser reactor. The method of the invention can lower total yield of dry gas and coke by 0.5-1.5 percentage, increase total liquid yield of liquefied gas, gasoline and diesel by more than 1 percentage, and reduce gasoline olefin volume content by 5-15 percentage.

The invention discloses a catalytic cracking method and device. The method comprises the following steps: introducing raw oil into a lower part of a riser reactor to contact and react with a catalyst from a catalyst heat exchanger; separating oil gas after the reaction from a coked catalyst; introducing separated reaction oil gas into a fractionating tower; carrying out steam stripping on the separated coked catalyst and sending the coked catalyst into a regenerator for regeneration; carrying out heat transfer and cooling on the regenerated catalyst and part of system prevailing wind within the catalyst heat exchanger; sending part of the regenerated catalyst into the riser reactor from different heights of the riser; and sending the other part of the regenerated catalyst into the lower part of the riser reactor. The method can reduce total yield of dry gas and coke by 0.8-2 percentage, increase total liquid yield of liquefied gas, gasoline and diesel by 1.2 percentage, and reduce volume content of gasoline olefin by 5-15 percentage.

The invention discloses thermoforming die in-mold punching equipment with heating devices, and aims to provide the heating devices which are used for heating the periphery of a punching hole to a certain temperature when the temperature is too low in the production process during punching in a thermoforming die, so that a punch is not prone to breaking during punching. The in-mold punching equipment is characterized in that female die linings and a supporting seat are provided with the heating devices; each heating device comprises a heating rod, a temperature sensor and a heating control system; the heating rods and the temperature sensors are connected with the heating control systems; and the heating rods penetrate through the supporting seat and extend into the female die linings. According the in-mold punching equipment, the heating rods and the temperature sensors are arranged on the female die linings, so that the temperature of the female die linings and a pressing plate is detected through the temperature sensors at any time; and when the temperature is lower than a certain value, the heating control systems control the heating rods to increase the temperature to make thewhole female die linings and the pressing plate stabilized at a stable temperature, so that a part is not cooled too quickly when making contact with the female die linings, thus the strength of the part is not increased too quickly, and the punch is not prone to breaking during punching.

The invention relates to the field of beer brewing, in particular to a hops adding method of low-bitterness wort. The method specifically comprises the following steps: crushing raw material barley malt, performing acid restoration, carrying out heat preservation for 30 minutes at 35 DEG C, carrying out protein decomposition, carrying out heat preservation for 60 minutes at 50 DEG C, carrying outstarch decomposition, carrying out heat preservation for 60 minutes at 65 DEG C, carrying out enzyme deactivation at 78 DEG C, carrying out heat preservation for 10 minutes, performing filtering, boiling wort for 60 minutes, cooling the wort to 75 DEG C, adding mosaic hops, carrying out rotary precipitation for 30 minutes, and cooling obtained liquid to 8 DEG C. The technical scheme provided by the invention has the beneficial effects that: the content of isoalpha acid obtained by isomerizing alpha acid in the final finished wort product is also greatly reduced, the bitterness of the final finished beer product is also greatly reduced compared with that of beer produced by a traditional wort preparation process, and the final finished product is easily accepted by consumers.