33results about How to "Reduce heat response" patented technology

The invention discloses a fluidized bed reactor used for light olefin cracking and Methanol To Olefin (MTO), which comprises a reactor and a pre-riser; the reactor comprises a dense phase fluidized bed reactor and a dilute phase conveying reactor which are positioned at same axis, the pre-riser and the dilute phase conveying reactor are respectively positioned at upper part and lower part of the dense phase fluidized bed reactor; diameter of the pre-riser is smaller than diameter of the dense phase fluidized bed reactor, the upper part of the pre-riser extends into the dense phase fluidized bed reactor; an upper end port of the pre-riser in the dense phase fluidized bed reactor is sealed, and a perforate is provided on the tube wall of the pre-riser in the dense phase fluidized bed reactor; or the perforate is provided on the upper end of the pre-riser in the dense phase fluidized bed reactor, and a baffle plate is arranged over the perforate. The reactor is capable of increasing gas-solid contact efficiency, the backmixing degree of oil gas and a catalyst is less, and conversion rate of one way of the light olefin cracking and Methanol To Olefin (MTO) reactions can be greatly improved, and the target product micromolecule olefin selectivity can be greatly improved.

The invention provides a method of heavy raw material catalytic conversion and the device, comprising: the heavy hydrocarbon raw material passing through the first and second reaction area of the raiser reactor and contacting with catalyst for first reaction and second reaction, the reactants entering into the settler for the separation of catalyst and oil gas, steam stripping the separated catalyst through stripping section and introducing it to the reactivator for carbon burning reactivation, the reactivated catalyst returning to the raiser reactor after cooled or directly to the raiser reactor for reuse. After the heavy oil passing through the device said above, the volume content of olefin decreases by 10~40%, octane value increases 0.5~1 units, sulfur content in petrol decreases 10~30% by weight. After the poor petrol passing through the device said above, the volume content of olefin decreases by 10~60%, octane value increases 0.5~40 units, sulfur content in petrol decreases 10~50% by weight.

The invention discloses a method for preparing a heat-resisting attenuated virus live vaccine for goatpox by using a BHK21-C13 passage cell. Based on the existing attenuated virus AV41 for goatpox, which has excellent immunogenicity, the method comprises the following steps: culturing 25-28th generations of virus solution with a heterologous BHK21 cell, and then adding an appropriate heat-resisting freeze-drying protective additive to obtain the heat-resisting attenuated virus live vaccine for goatpox. The passage cell vaccine used by the method is superior to the primary cell vaccine in the aspects of virus yield, homogeneity, purity and the like, not only guarantees the effective level of the vaccine and has a better heat-resisting protection effect, but also can ensure the safety of a purebred pregnant goat. As the existing BHK21 cell adopts a mature suspension culture process, the exploration of various parameters of adherent culture lays a solid foundation for the next promotion of suspension process.

The invention provides a circulating fluid bed reaction device for preparing olefin from alkane through catalytic dehydrogenation or catalytic cracking. The device comprises a reactor and a reactor sedimentation section, wherein the reactor sedimentation section is positioned at the upper part of the reactor; the reactor comprises a diameter shrinkage section; the cross section diameter of the diameter shrinkage section is gradually decreased from bottom to top; a lifting pipe extends into the reactor from the lower part of the reactor; a catalyst regeneration inclined pipe is connected with the lifting pipe outside the reactor. The reaction device realizes the gradual diameter shrinkage along the fluid flowing direction; the secondary conversion of of olefin due to returning and mixing isreduced. Reactants and catalysts in the reactor realize the flow merging and upward flowing; the uniform distribution of temperature in the reactor can be effectively improved; the local high temperature is avoided.

A shroud cooling system (100) configured to cool a shroud (50) adjacent to an airfoil within a gas turbine engine (10) is disclosed. The turbine engine shroud (50) may be formed from shroud segments (34) that include a plurality of cooling air supply channels (40) extending through a forward shroud support (52) for impingement of cooling air onto an outer radial surface of the shroud segment (34) with respect to the inner turbine section of the turbine engine (10). The channels (40) may extend at various angles (42) to increase cooling efficiency. The backside surface (62) may also include various cooling enhancement components configured to assist in directing, dispersing, concentrating, or distributing cooling air impinged thereon from the channels (40) to provide enhanced cooling at the backside surface (62). The shroud cooling system (100) may be used to slow down the thermal response by isolating a turbine vane carrier (28) from the cooling fluids while still providing efficient cooling to the shroud (50).

The invention relates to an S-shape fluidized bed with the main technical solving proposal that the inner wall surface of the fluidized bed shows the wave shape along the direction of a long axle. The invention aims at solving the problems of the fluidized bed such as pressure loss, granules mixing, granules build-up and serious wall surface abrasion caused by the phenomenon of 'center-wall pipe flow' in the background technology, providing the S-shape fluidized bed which has even distribution of flow phase speed, solid granules phase speed and concentration.

The invention relates to reaction apparatus for catalytic dehydrogenation of alkanes. The reaction apparatus comprises a reaction section and a reactor sedimentation section; the reactor sedimentationsection is positioned on the upper part of the reaction section; the diameter of the reaction section is gradually decreased from top to bottom; a catalyst regeneration tube aslant stretches into thereaction section, and the outlet end of the catalyst regeneration slant tube is positioned at the lower part of the reaction section; and a feeding distribution device is positioned below the outletend of the catalyst regeneration slant tube in the reaction section. The reactants and the catalyst in the reactor flow concurrently upwards, so that the uniformity of the temperature distribution inthe reactor can be effectively improved, local high temperature can be avoided, and then the thermal reaction is reduced. In addition, the diameter of the reactor is gradually decreased along the flowing direction of the fluid, and the secondary conversion of the alkenes caused by back mixing is reduced, so that the yield and the selectivity of alkenes are improved. A high-temperature regeneratoris directly sprayed into the bottom of the dense-phase bed of the reactor, so that rapid mixing of the high-temperature catalyst with the catalyst in the reactor is facilitated, and local high temperature in the bed layer is avoided. The dense-phase fluidized catalyst is beneficial to the ending of the transmission of free radicals, so that the thermal reaction is reduced, and the selectivity of preparing alkenes by the dehydrogenation of alkanes is improved.

The present invention relates to children's intelligence and vision development promoting fully nutritious breakfast. The breakfast comprises the following six varieties of raw materials of cereals, beans, fruits, vegetables, nuts and fibers, a total of 31 edible materials. The specific form of the fully nutritious breakfast is nutritious rice slices and fruit and vegetable particles. The present invention also relates to a preparation method of the children's intelligence and vision development promoting fully nutritious breakfast. The fully nutritious breakfast is comprehensive in nutrition, easy to digest and absorb, and also easy to carry and convenient to brew. Besides, by adding carrots, grapes, blueberries and other edible materials, the breakfast supplements children needed anthocyanins, carotene, vitamin C and B family, and reaches the effects of protecting eyes and enhancing vision. By adding walnut kernels, millet, shii-take, red dates, bananas and other edible materials, the breakfast can reach a certain function of supplementing and tonifying brains.

The invention relates to a nutritional breakfast beneficial for working personnel to protect eyes, keep fit and strengthen the spleen and the stomach. Raw materials of the nutritional breakfast include 30 food materials in six categories of cereals, beans, fruits, vegetables, nuts and fibers. The concrete form of the nutritional breakfast is nutritional rice slices and fruit and vegetable particles. The invention also relates to a preparation method of the nutritional breakfast beneficial for the working personnel to protect the eyes, keep fit and strengthen the spleen and the stomach. The nutritional breakfast disclosed by the invention is comprehensive in nutrition, easy to digest and absorb and convenient to carry and brew; the effects of protecting the eyes and enhancing vision are achieved through addition of blueberries, strawberries, applies, grapes and carrots; the effects of keeping fit and slimming are achieved through addition of apples, carrots, lentinus edodes, pumpkins, oats, buckwheat and sweet potatoes; and the effect of nourishing the spleen and the stomach is achieved through addition of rice, millet, barley, triticum aestivum, semen nelumbinis, pisum sativum, bananas, broccoli and brassica rapa.

The invention discloses a catalytic cracking method and its apparatus, which belongs to the petrochemical technical field. The process of catalytic cracking is carried out in a reactor which is at least provided with a first reaction zone, a conveyer pipe and a second reaction zone, a regenerated catalyst from a regenerator is contacted and reacted with raw oil in the first reaction zone of the reactor, a reaction mixture is flowed upwards and separated to a catalyst through a diverter, the separated catalyst directly flows into a stripping stage, the reaction oil gas flows upwards along the conveyer pipe and is introduced in the second reaction zone of the reactor, a part of cooling regenerated catalyst is introduced in a catalyst additional area, and then introduced in the second reaction zone from the catalyst additional area, mixed with reaction oil gas from the first reaction zone, thereby oil gas is continuously reacted, the separated oil gas after finishing the reaction is conveyed to a subsequent fractionation system, the catalyst flows into the stripping stage, combined with the separated catalyst through the diverter in the first reaction zone, stripped and then introduced in the regenerator for regeneration. The catalytic cracking method and its apparatus reinforce the selectivity of the catalytic reaction in the reactor, and the investment can be reduced by sharing stripping.

The invention relates to a high-strength fusion smelter for colored strengthening smelting. The smelter comprises a smelter wall port, an upper smelter wall, a smelter wall above a liquid line, a liquid line smelter wall, a smelter wall below the liquid line, a secondary working layer, a liquid outlet nozzle and a smelter bottom. All the parts of the smelter are made of fire-resistance materials,by analyzing working conditions of different parts of the high-strength fusion smelter for colored strengthening smelting, different kinds of fire-resistance material brasque are used as the corresponding parts, one or more properties of the erosion resistance, thermal shock resistance, washing resistance and permeability resistance of the brasque at the part are improved, the service life of thebrasque is greatly improved, frequent repairing and brasque replacement are avoided, and a large number of human resources and financial resources are saved.

The invention discloses a catalytic cracking method of increasing gasoline yield, which comprises the following steps: (A) feeding raw material oil to the lower part of a first lifting tube reactor and carrying out a contact reaction to the raw material oil with a catalyst from a pre-lifting mixer; (B) feeding a to-be-regenerated catalyst from the first lifting tube reactor into a steam stripping part of a main precipitator, performing steam stripping and regenerating the catalyst in a regenerator; (C) feeding catalytic diesel or hydrotreated catalytic diesel into the lower part of a second lifting tube reactor and carrying out a contact reaction with the catalyst from the regenerator; (D) feeding the to-be-regenerated catalyst from the second lifting tube reactor into a steam stripping part of a sub precipitator; (E) performing air stripping to the to-be-regenerated catalyst from the steam stripping part of the sub precipitator, feeding one part of the catalyst into the regenerator and regenerating the catalyst, and feeding the other one part of the catalyst into the pre-lifting mixer and mixing the catalyst with the regenerated catalyst from the regenerator; and (F) feeding the mixed catalyst into the lower part of the first lifting tube reactor and carrying out a contact reaction with the raw material oil. By means of the method, the catalytic cracking device is increased by 3-20% in gasoline yield, is increased by more than 0.5 units in RON of gasoline and is reduced in the content of olefin by more than 3% by volume. The gasoline directly produced in the second lifting tube reactor is higher than 96 in RON and is less than 10% in the content of olefin.

The invention discloses a preparation method of a diamond wire cutting pulley piece. The preparation method comprises the steps of bar cutting, general lathing and hole forming, rough machining, material heating, hot sleeving, obtaining of a semi-finished product, numerically controlled slotting and obtaining of a finished product, wherein: (1) firstly, a polyethylene bar is cut in sections, the outer circle is turned, and the inner circle is bored, so as to obtain a polyethylene ring; (2) the obtained polyethylene ring is softened and expanded in the form of oven heating; (3) a softened and expanded polyethylene ring is installed on a nylon frame, and after natural cooling, the polyethylene ring condenses, shrinks and is in interference fit with the nylon frame to form a semi-finished pulley piece; and (4) a CNC lathe is used to remove margins on both sides and on the outer circle of the polyethylene semi-finished product, and then the finished product is obtained after the surface ofthe semi-finished product is slotted through the movement of a slotting tool along the X---Z axis. The prepared pulley effectively reduces the proportion of wire breakage caused by the winding and unwinding of a diamond wire during the silicon wafer cutting process, reduces the cutting loss of the diamond wire, prolongs the service life of the pulley, improves the yield of cutting products, and improves the efficiency of man-machine cutting.

The invention belongs to the technical field of production of storage batteries, and particularly relates to a lead-acid storage battery electrode group of which positive electrodes and negative electrodes have equal service life. The lead-acid storage battery electrode group comprises multiple electrode plate groups which are in series connection, each electrode plate group is formed by positiveelectrode plates and negative electrode plates which are in parallel connection, AGM clapboards are arranged between every two adjacent electrode plate groups, and the negative electrode plates are connected with electrode plate link busbars. By means of the lead-acid storage battery electrode group, according to different reaction mechanisms of the positive electrode plates and negative electrodeplates in the charging and discharging process of a storage battery, by adjusting structures of current collecting ribs of plate grids of the positive electrodes and negative electrodes, current is reasonably distributed at all the positive electrode plates and the negative electrode plates as required in the charging and discharging process of the storage battery to guaranteed that active substances, close to current collectors and away from the current collectors, on the positive electrode plates and the negative electrode plates release energy simultaneously, and the purpose that the positive electrode plates and the negative electrode plates have the equal service life is achieved.

The invention discloses a catalytic cracking technology and a device. Raw oil contacts and reacts with a catalyst from a catalyst pre-stripping mixer; after the reaction, oil gas is separated from a spent catalyst; separated reaction oil gas enters a fractionating tower for fractionation; the separated spent catalyst undergoes stripping and then is completely regenerated; a part of regenerant enters a catalyst heat-exchanger to undergo heat exchanged with part of prevailing wind and then enters the catalyst pre-stripping mixer; another part of the regenerant enters an external heat removal device for heat remove and cooling; and a part of a cooling regenerant returns to a regenerator and another part enters the catalyst pre-stripping mixer to be mixed with the regenerant from the catalyst heat-exchanger, and the mixture is recycled to a riser reactor. By the use of the technology, catalyst/oil ratio of the catalytic cracking device can be raised; dry gas and coke yield of the catalytic cracking device is reduced; total liquid yield is raised; and olefin content in gasoline and SOX emission in catalytic flue gas are simultaneously reduced.