42results about How to "Volume content reduction" patented technology

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 provides a method for circulating a cold regenerated catalyst and application thereof. A regenerated catalyst from a regenerator is cooled by a catalyst cooler to between 200 and 720DEGC, and is not mixed with a hot regenerated catalyst to directly enter a riser reactor, or is mixed with another part of uncooled hot regenerated catalyst into a mixed regenerated catalyst of which thetemperature is not lower than that of the regenerator to enter the riser reactor; and a hydrocarbon raw material undergoes contact reaction with the catalyst in the riser reactor, the reaction material flow enters a settler for the separation of the catalyst and oil gas, the separated catalyst to be regenerated is subjected to steam stripping in a steam stripping section, and then enters the regenerator for coke burning regeneration, and the regenerated catalyst is cooled and returns to the riser reactor for recycling. The method for circulating the cold regenerated catalyst has wide application, can be used for various fluid catalytic cracking processes comprising resid fluid catalytic cracking, wax oil catalytic cracking, gasoline catalytic conversion upgrading and the like, and also can be sued for other gas-solid reaction processes comprising residual oil pretreatment, fluid coking and the like.

The invention provides a method for catalytic conversion of heavy oil, which comprises a fluidized catalytic conversion process that: heavy hydrocarbon raw materials contacts a catalyst in a riser reactor or fluidized bed reactor to react; the reaction temperature is 400 to 650 DEG C (preferably 480 to 560 DEG C); the reaction pressure is 0.11 to 0.4MPa; the contact time is 0.05 to 5 seconds (preferably 0.1 to 3 seconds); and the weight ratio of the catalyst to the raw materials ( catalyst to oil ratio) generally is 3 to 15, preferably 5 to 12. The reaction products flow in a settler for catalyst and oil gas separation; the separated catalyst to be regenerated is stripped by a stripping section and enters a regenerator for coke burning regeneration; and the regenerated catalyst is cooled or directly returns to the riser reactor to be recycled. The method can solve the problems encountered in the resid-blend ratio improvement and gasoline upgrade and update processes of the prior catalytic conversion.

The invention discloses a hollow core sandwich rotary body fabric and application thereof. The hollow core sandwich rotary body fabric comprises an inner layer, a middle core layer and an outer layer from inside to outside in sequence, wherein the inner layer is formed by interweaving an inner layer warp system and an inner layer weft system; the outer layer is formed by interweaving an outer layer warp system and an outer layer weft system; the middle core layer is formed by interweaving a pile warp system with the inner layer weft system and the outer layer weft system respectively. The hollow core sandwich rotary body fabric disclosed by the invention is good in electrical property, light in weight and high in strength, and is relatively applicable to communication antenna covers; due to adoption of single yarns, the distribution and the movement modes of axial yarns among unit tissue structures of the hollow core sandwich rotary body fabric are all identical, and a composite material made of the fabric is uniform in wave transmissivity at different parts; the fabric can be used in a reinforced mobile communication antenna cover body which is made of a glass steel composite material of a hollow core sandwich structure, the dielectric constant epsilon of the fabric is less than 2, and the loss tangent tg delta of the fabric is less than 0.007.

The invention discloses a method for preventing electrostatic dust collection explosion venting in the converter double-slag smelting process. The method includes the steps that when lance carrying deslagging is carried out for the first time in the converter smelting process, an oxygen lance is carried to a fire hole for nitrogen flushing, and as for the volume contents of gases in a dust remover, nitrogen flushing is stopped after O2 is smaller than or equal to 6% and CO is smaller than or equal to 9%. According to the method, by optimizing the primary slagging gas supply system, the converter oxygen lance is used for nitrogen flushing, the volume content of O2 entering the electrostatic field dust remover after converting is stopped is controlled to be 6% or below, the explosion conditions of a gas mixture of CO and O2 are effectively evaded, and therefore explosion venting of the electrostatic field dust remover in converter double-slag operation can be avoided, and the effects ofstabilizing the converter production rhythm, reducing the damage to dust removing equipment and prolonging the service life are achieved. Meanwhile, the double-slag operation is adopted in a converter, P controllability of the converter is improved and the volume production needs of high-end branded steel are met.

A catalytic process for upgrading the poor gasoline by used of the stripping zone of settling unit in catalytic cracking apparatus includes cooling the regenerated catalyst to 300-550 deg.C, feeding the mixture of regenerated catalyst and the catalyst to be regenerated into said stripping zone, and counterflow contact of said mixture and the poor gasoline in the stripping zone for upgrading at 350-550 deg.C and 0.1-0.4 MPa for 0.5-3 seconds. It can decrease olefine content by 15-45% and S content by 10-30%, and increase RON by 0.5-2 unit.

The invention provides a fabric punched felt complex and a preparation method thereof. The preparation method comprises the following steps: compounding a continuous functional fiber fabric layer and a continuous functional fiber bulked yarn crude fabric layer together so as to obtain integrated fabric; then compounding a chopped functional fiber punched felt layer with the continuous functional fiber bulked yarn crude fabric layer of the integrated fabric through needling so as to obtain the fabric punched felt complex. The fabric punched felt complex has a light and high strength structure with stepped intensity changes. The weight of the fabric punched felt complex is 30% lighter than that of complete fabric with a same volume, while the mechanical performance of the fabric punched felt complex is equal to that of complete fabric with a same volume, and is better than that of complete chopped fiber punched felt. At the same time the fiber raw material is saved by 30% or more, moreover the preparation technology is simple, and the production period is short.

The invention discloses a drilling mud negative pressure screen which comprises a screen body shell, a mud inlet is formed in the upper end of the screen body shell, a screening device is arranged below the mud inlet and comprises a horizontal soft screen, and the two ends of the screen are wound around a first winding drum and a second winding drum respectively. A plurality of vibration cylinders are arranged between the first winding drum and the second winding drum and located between the two layers of screens, a plurality of negative pressure exhaust pipes are arranged among the vibration cylinders in a crossed mode, and the negative pressure exhaust pipes are connected with a first negative pressure device; a first water receiving disc is arranged below the vibration cylinder and the negative pressure exhaust pipe, and is communicated with a slurry discharging opening in the screen body shell; a conveying belt is arranged below the first winding drum and located above the discharging port. The scheme can enhance oil well control and reduce environmental risks. Completely closed processing is performed, the air negative pressure principle and the conveying belt are adopted, oil mist emission is avoided, noise generated by low-frequency vibration is avoided, and the working environment can be effectively improved.

The invention discloses a high-water-oil ratio catering liquid waste grease collecting device and a high-water-oil ratio catering liquid waste grease collecting method, belonging to the technical field of kitchen waste oil collection. The device comprises a Y-shaped washing pool discharging connection pipe fitting including a U-shaped connection pipe, and an oil-water separator. The Y-shaped washing pool discharging connection pipe fitting including the U-shaped connection pipe is used for preprocessing catering liquid waste before the catering liquid waste enters the oil-water separator, andcan directly shunt most part of catering liquid waste in a washing pool into a discharging pipeline, so as to bring most part of grease into the oil-water separator. According to the high-water-oil ratio catering liquid waste grease collecting device, the Y-shaped washing pool discharging connection pipe fitting including the U-shaped connection pipe is additionally arranged between the washing pool and the oil-water separator, and through the tee-joint pipeline shunting principle and U-shaped communicating vessel principle, kitchen waste oil in dish water and pot washing water can be collected maximally, the minimum workload of the oil-water separator is realized, and the revenue maximization of the device can be achieved.

The invention discloses a continuous deformation composite material profile and a preparation method thereof. The preparation method comprises the following steps in sequence: S1, impregnating continuous longitudinal fibers with resin to obtain prepreg, and continuously welding or extruding metal to obtain a tube blank; S2, continuously bringing the prepreg into the tube blank to obtain a materialto be deformed; S3, synchronously driving the prepreg and the tube blank of the material to be deformed, changing the section of the tube blank through a drawing or rolling process or/and deforming the spatial form of the tube blank through a mold to obtain continuous materials to be formed with the same or different spatial forms; and S4, heating the materials to be formed to obtain the continuous deformation composite material profile with the same or different spatial forms, wherein the continuous deformation composite material profile comprises a core material formed by crosslinking and curing the prepreg and an armor layer formed by deforming the tube blank. The continuous deformation composite material profile can be continuously prepared, and the availability of the continuous deformation composite material profile can guarantee the value engineering design requirement of a composite material needing to integrate various performance requirements.

The invention discloses a cold rolling method for a beta titanium alloy thin plate. The method includes the first step of placing a beta titanium alloy thin plate blank into a vacuum annealing furnacefor vacuum annealing at the temperature of 10 DEG C to 20 DEG C below the beta phase transformation point and then controlling the cooling rate and cooling to the room temperature; the second step ofconducting segment rolling on the cooled beta titanium alloy thin plate blank with a small-convexity cold rolling roll to obtain the beta titanium alloy thin plate in the target size. According to the method, the beta titanium alloy thin plate blank is subjected to vacuum annealing at the temperature of 10 DEG C to 20 DEG C below the beta phase transformation point, and the cooling rate is controlled, so that the primary alpha phase is sufficiently grown, and the residual beta phase volume content is reduced. The fact that the second phase precipitates too much and strengthens the alloy whichis then not easy to machine in the process of cooling to the room temperature with the furnace is avoided. By segment rolling, the orientation of most alpha phases tends to be uniform, and the defectlike cracking caused by uncoordinated deformation during the subsequent rolling process is overcome. The problem that the beta titanium alloy is difficult roll after the vacuum annealing is solved.

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 naphtha catalytic reforming method of by-product reduction hydrogen. When a reforming apparatus is normally operated, a random reforming reactor is cut, a platinum rhenium catalyst in the reactor is subjected to regeneration processing; then the reduced reforming catalyst has high hydrogenolysis activity, the reforming hydrogen obtained by the other reactor is processed, the contained C2<+> hydrocarbon is subjected to hydrogenolysis to carbon and methane, volume content of C2<+> in hydrogen storage is greatly reduced, and the requirement of commencement of works of the reforming catalyst is satisfied. Compared with the prior art, disadvantages of the low octane number of the gasoline obtained by catalytic reforming due to low temperature hydrogen storage, usage amount of C2<+> hydrocarbon used for active carbon adsorption, and low equipment utilization rate are overcome, and the method has the characteristic of flexible process operation.

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 a preparation method for a high-friction oil strain-accommodating wiping material and belongs to the technical field of wiping material preparation. According to the preparation method, after purified algal cellulose is added into a precursor sol, the purified algal cellulose can slowly absorb water and swell; mullite whiskers can grow in the swelling purified algal cellulose during an ageing process; under high temperature, the instantaneous temperature on a friction surface is higher, and meanwhile, a softer material is generated and transferred to the friction surface of a harder material, so as to form a transferring film on the friction surface; yeast fermentation modification is adopted by the preparation method, and the blind holes and inner channels of the fiber sponge can be simultaneously opened by oily substances, such as a dimethyl silicone polymer, under the microbial action; the algal cellulose aerogel according to the invention has moderate pore size and high porosity; the wiping material provided by the invention comprises the main components as follows: plant cellulose, mountain flour sol and common nontoxic organic matters; a large amount of wastewater and slags are avoided in the production process; the preparation method has a wide application prospect.