19results about How to "Extended operating cycle" patented technology

The application discloses a method for sealing coke oven door frame channeling by grouting, which comprises the following steps: firstly, observing the channeling of the coke oven door frame to be repaired, judging the gap state between the coke oven door frame and the protection plate, and determining the channeling position; secondly, removing the T-shaped bolts of the fixed pressing plates adjacent to the upper part and the lower part of the channeling position, and completely covering the channeling position between the upper and lower pressing plates; thirdly, cleaning the installation hole after the T-shaped bolts are removed; fourthly, installing the grouting sealing plate with a grouting pipe and a drainage pipe in the T-shaped bolt installation hole of the upper part and the lower part of the channeling position; fifthly, using a grouting machine to press the sealing grouting material into the gap between the coke oven door frame to be repaired and the protection plate through the grouting pipe in batches until the grouting pipe discharges the grouting material; and finally, completing the sealing grouting of the coke oven door frame channeling. The method overcomes the defects of the traditional coke oven door frame channeling maintenance, reduces the influence on the normal production of the coke oven, avoids damaging the carbonization chamber masonry, improves the maintenance effect and efficiency, reduces environmental pollution, ensures the normal and reliable operation of the coke oven, and prolongs the operation cycle.

The utility model discloses a multilayer combined filter structure of desulfurization dust remover, including tower body, at least one layer composite filler layer is arranged in the tower body, the composite filler layer is multilayer structure, and the regular shaped filler area, transition flow guide area, bulk packing area and support grating from top to bottom include successively, the regular shaped filler area and bulk packing area outside all are provided with fixed frame, the regular shaped filler area and bulk packing area are filled in the corresponding fixed frame respectively, through the high specific surface area of bulk packing, can effectively strengthen gas liquid contact in bulk packing area, improve mass transfer rate, and the low resistance characteristic of regular shaped filler can avoid partial pressure drop surge in regular shaped filler area, realizes the balance of desulfurization efficiency and energy consumption, reduces operating energy consumption while guaranteeing desulfurization effect.

The utility model relates to the field of petroleum chemical technology, concretely relates to a catalyst settlement system stable in operation and good in settlement effect, including clarification mechanism, sludge buffer tank, feed pipeline, sludge tank, backflow pipeline, overflow pipeline, filter press, filtrate tank and sludge discharge pipeline, the clarification mechanism includes a plurality of settlement tanks that are arranged side by side from front to back in proper order and the clarification tank that is arranged at the end of clarification mechanism, the bottom of clarification tank is provided with special ammonium sulfate solution discharge pipeline, is provided with ammonium sulfate solution pump on the ammonium sulfate solution discharge pipeline, the end of ammonium sulfate solution discharge pipeline extends to ammonium sulfate tank area, the outlet end of ammonium sulfate solution pump is equipped with a branch pipeline, this branch pipeline is connected with the feed inlet on the top of filtrate tank through regulating valve, the bottom outlet of filtrate tank is connected with the inlet of clarification mechanism through filtrate pump. The catalyst settlement system is stable in operation, and the downstream device operation cycle is prolonged.

The application discloses a novel biogas slurry membrane filtration device based on silicon carbide membranes, comprising: a silicon carbide membrane assembly, which is composed of four groups of membrane groups in parallel connection, and two ends of each group of membrane groups are connected with a shunt pipe and a collection pipe; each group of membrane groups comprises four silicon carbide tubular membrane tubes, and the four silicon carbide tubular membrane tubes are connected in series, each silicon carbide tubular membrane tube is provided with a plurality of large through-hole structures along the axial direction thereof, the diameter of the large through-hole structure is 8 mm, and the pore size of the membrane tube is 150 nm; and a cleaning assembly connected with the silicon carbide membrane assembly and used for cleaning the silicon carbide membrane assembly according to a preset mode. The application has stronger anti-clogging performance, is suitable for anaerobic biogas slurry treatment with high solid content and more organic fiber components, effectively alleviates the problems of scaling and fiber winding and clogging, and solves the problem of membrane strength through the thickening design of the membrane tube spacing.

The utility model relates to the technical field of chemical catalytic reaction equipment provides a kind of for solid particle catalysis suspended state fixed bed reaction device, including reactor, solid particle catalyst layer, Reynolds number control unit and filter screen structure;Solid particle catalyst layer is filled in reactor, and its filling volume occupies 1 / 3~1 / 2 of reactor reaction zone effective volume;Reynolds number control unit is connected with reactor, and filter screen structure is arranged at the top and bottom of the reactor reaction zone.This scheme not only solves the problem of swelling blockage in the application of solid particle catalyst, prolongs the cycle of operation, and the suspended state promotes catalyst and fluid to be in full contact, prevents material short circuit, improves conversion rate, and further inhibits mechanical loss, reduces production cost.

This utility model discloses a treatment device for mitigating coking of atmospheric residue oil, belonging to the field of petroleum processing technology. The device includes a vacuum furnace and a vacuum tower. The vacuum tower has a packing layer inside. Its key feature is that it further includes a hydrogenation reactor and a gas-liquid separator. The outlet of the vacuum tower is connected to the inlet of the hydrogenation reactor via a pipeline. The outlet of the hydrogenation reactor is connected to the inlet of the gas-liquid separator via a pipeline. The liquid phase outlet of the gas-liquid separator merges with the atmospheric residue oil feed stream and is then connected to the inlet of the vacuum furnace via a corresponding pipeline. The outlet of the vacuum furnace is connected to the inlet of the vacuum tower via a pipeline. This utility model, by adding a hydrogenation reactor and a gas-liquid separator and reorganizing the pipeline connections, allows the wash oil to be pretreated before mixing, fundamentally improving the thermal stability of the oil, reducing the coking tendency of the residue oil, and extending the operating cycle of the device.

The application discloses a kind of for crude benzene full fraction and / or coal-based light hydrocarbon hydrogenation processing method, under the condition of 4~15Mpa, make reaction raw material sequentially through first-stage hydrogenation reaction, secondary hydrogenation reaction and tertiary hydrogenation reaction step.Wherein, first-stage hydrogenation reaction is liquid phase prehydrogenation, selects first NiMo catalyst;Secondary hydrogenation reaction is gas-liquid two-phase hydrogenation, selects second NiMo catalyst;Tertiary hydrogenation reaction is gas-phase hydrogenation, selects at least one of third NiMo catalyst, CoMo catalyst and NiMoW catalyst.The application adopts reasonable catalyst grading scheme and appropriate process condition, without carrying out heavy removal pretreatment to crude benzene, reduce the energy consumption required in processing process.

The present application belongs to the technical field of slurry bed hydrogenation, and discloses a residual oil processing system and method. The system comprises a residual oil hydrogenation reaction device, an oil-gas separation unit, an atmospheric distillation unit, a vacuum distillation unit and a raw oil feeding pipeline. The present application has the technical characteristics of simple structure, improved economic benefits, reduced investment cost and device operation energy consumption, etc.

This utility model discloses a cyclone separator for a biomass circulating fluidized bed boiler, comprising a flue gas inlet section, a gas-solid two-phase separation section connected to the flue gas inlet section, a flue gas outlet section connected to the top and bottom of the gas-solid two-phase separation section respectively, and a solid return section. The solid return section includes multiple coaxially connected and fixedly connected solid return straight sections and multiple solid return conical sections, which are arranged at intervals in the vertical direction. Flue gas flows in from the flue gas inlet section, rotates along the inner wall of the gas-solid two-phase separation section, and achieves gas-solid two-phase separation through centrifugal force. The gas phase flows out through the flue gas outlet section, and the solid phase is returned from top to bottom through the solid return section. Through segmented and optimized solid return path and gas-solid separation flow field, the intermittent blockage problem caused by alkali metal adhesion in traditional cyclone separators is solved, avoiding forced boiler load reduction or shutdown. It is especially suitable for biomass combustion scenarios with complex fuel types and variable ash composition.

The present application relates to a kind of methyl hexahydrophthalic anhydride preparation method, comprising the following steps: with the refined methyl tetrahydrophthalic anhydride that is not isomerized as raw material, raw material and hydrogen are sent into ebullated bed hydrogenation reactor, then special catalyst is added to carry out hydrogenation;Waste hydrogen and methyl tetrahydrophthalic anhydride light component are taken out by gas phase from the top of reactor, waste catalyst is taken out from the bottom of reactor, and the hydrogenation product crude methyl hexahydrophthalic anhydride is taken out by pump control liquid level from the side of reactor;Crude methyl hexahydrophthalic anhydride is sent into the separation device with thin film evaporator and is subjected to vacuum distillation, and finished product methyl hexahydrophthalic anhydride is obtained.The catalyst used in the present application has moderate activity, high hydrogenation efficiency;Catalyst and product have no separation process, less loss, low safety risk;Post-treatment process has high heat transfer efficiency, short residence time, low colority;Product has less by-product, high yield, stable acid value and anhydride group content, and excellent performance.

This invention relates to the field of producing mesitylene from reformed C9 heavy aromatics, specifically a method, apparatus, catalyst, and preparation method for producing mesitylene. The method for producing mesitylene includes removing C9 heavy aromatics from C9 heavy aromatics via a de-heavy tower. 10 The above-mentioned heavy components convert the separated C9 mixed aromatics into dealkylation isomerization products. These products undergo gas-liquid separation to obtain liquid hydrocarbon products, which are then separated in a distillation column. Light components are produced at the top of the distillation column, mesitylene is produced from the side stream, and the bottom product is returned to the heavy hydrocarbon removal column, achieving material recycling. This invention uses reformed C9 heavy aromatics as raw material, developing a highly efficient catalyst and reaction separation process to solve the interference of methyl ethyl benzene in existing processes, retain mesitylene, reduce by-product generation, increase mesitylene yield, improve catalyst stability, extend operating cycle, reduce mesitylene production costs, and enhance the utilization value of C9 mixed aromatics.

The utility model provides a kind of LORA safety monitoring device based on remote control wake-up, belong to environmental monitoring equipment technical field, comprising: main control module;With the sensor group module of main control module connection;With the LORA communication module of main control module connection, the LORA communication module connection monitoring terminal;Power module, with the main control module The LORA communication module and the sensor group module are connected;Remote control receiving module, with the power module and remote control are connected.The utility model can be in complex dangerous area, using long-distance control, avoid potential personnel casualty accident, can guarantee the stability of data acquisition simultaneously;Using LoRa communication technology, reduce the high energy consumption of existing safety device, communication is unstable and so on, greatly improve the usability and flexible deployment of system.

The utility model provides a leakproof bolt, including body, end cover and nut, the body is connected with the connecting piece thread, is provided with the first recess on the outer surface of body, is provided with the first sealing washer in the first recess, the first recess surrounds the outer surface of body a round, the outer surface of body is provided with the external thread, the end cover with nut all sets up on the body, the end cover is located between the nut with the connecting piece, tightens the nut after, the end cover can compress the first sealing washer. This leakproof bolt realizes multilayer sealing effect through first sealing washer, second sealing washer and hemp or polytetrafluoroethylene band, compresses the first sealing washer through the end cover, realizes the waterproof of end, this leakproof bolt is applicable to the connecting structure that needs to dismantle frequently, has increased the operation cycle of equipment and reduced the difficulty of overhaul, has reduced the overhaul cost.

This invention belongs to the field of C5 fraction separation technology, and discloses a C5 fraction refining system and a method for refining pentane foaming agent using it. The C5 fraction refining system includes: a heavy-reduction thickening tower, a refining tower, a condensate tank, an azeotropic agent injection line, and a finished product collection pipeline. The C5 fraction refining system provided by this invention can remove most of the target impurities in the heavy-reduction thickening tower, effectively reducing the number of trays in the refining tower, lowering equipment investment costs, simplifying the structure, reducing the likelihood of internal blockage, and extending the equipment's operating cycle. The pentane foaming agent refining method provided by this invention can effectively improve the quality of the pentane foaming agent, increasing pentane purity from approximately 50% to over 70%, completely removing DMF, and reducing the content of chlorine elements such as ammonium chloride to less than 10 ppm, as low as below 5 ppm.

The utility model relates to hyperbolic cooling tower water channel filter equipment field, especially a kind of split type filter screen device of cooling tower pool outlet, solve the problem of impurity falling when lifting out and cleaning, impurity is intercepted by bottom net plate, avoid impurity falling when lifting out water surface, split type filter screen unit can reduce the impurity mistake in filter screen cleaning process system, can protect and cooling tower outlet water connection equipment, heat exchanger etc., extend equipment operation cycle, including the cover plate of transverse installation in cooling tower pool outlet position, multiple filter screen units of up and down lifting are slidably connected on the cover plate, the filter screen unit includes two pieces of vertical distribution side net plate, the vertical side edge of two pieces of side net plate is connected as a whole, two pieces of side net plate are distributed at angle, the angle opening of two pieces of side net plate is towards cooling tower pool direction;Multiple horizontal distribution bottom net plates are arranged between two pieces of side net plate along height direction.

This utility model discloses a self-locking bolt connection structure for a speed reducer, including a motor and a speed reducer. Connecting parts are integrally connected to both sides of the motor output housing, and a positioning groove is provided between the two connecting parts. Positioning plates are integrally connected to both sides of the speed reducer housing, and an anti-loosening component is provided between the positioning plates and the motor housing. Threaded through holes are provided at all four corners of the speed reducer housing. A nut sleeve is threadedly connected to one end of each threaded through hole, and an internal thread groove is provided inside the nut sleeve. A locking bolt is threadedly connected to the other end of each threaded through hole, and an external thread post is integrally connected to the end of the locking bolt. The internal thread groove and the external thread post are compatible. Unlike traditional bolt structures that rely on friction for anti-loosening, this structure effectively resists preload attenuation caused by vibration through a dual mechanism of "threaded reverse self-locking" and "mechanical locking." The threaded reverse design automatically cancels out the loosening torque during vibration.

The present invention relates to a method and a device for monitoring the performance of a refractory layer of a high temperature gas treatment system. The high temperature gas treatment system comprises a high temperature gas generating device and a cooling device connected downstream of the high temperature gas generating device, a cooling medium in the cooling device exchanging heat with the high temperature gas from the high temperature gas generating device, the method comprising the steps of: measuring in real time an operating parameter of the high temperature gas treatment system, calculating a heat loss J A of the high temperature gas, calculating a heat load J B of the cooling device, defining a performance index P of the refractory layer as: P=(J A -J B ) / J A , and determining the performance state of the refractory layer according to the magnitude of the P value.