482 results about "Dry gas" patented technology

According to the waste plastic double-heat-carrier circulating rapid pyrolysis fuel oil preparation device provided by the invention, a waste plastic crusher is communicated with the top of a downward pyrolysis reactor through a controllable feeder, and the upper part of the downward pyrolysis reactor is respectively communicated with a pyrolysis dry gas heat exchanger and a primary solid heat carrier return feeder; the bottom of the downward pyrolysis reactor is connected to the top of the moving bed reactor; the top of the moving bed reactor is communicated with the fractionating tower; the bottom of the moving bed is communicated with the lifting pipe heating regenerator through a to-be-generated heat carrier return feeder; a gas distributor, an ash discharge pipe and a gas inlet pipe are arranged at the bottom of the riser heating regenerator, and a first-stage gas-solid separator and a second-stage gas-solid separator are arranged at the top of the riser heating regenerator; a gas outlet of the second-stage gas-solid separator is provided with a pyrolysis dry gas heat exchanger and a waste heat boiler; a wax oil outlet, a diesel oil outlet and a gasoline outlet are formed in the bottom and the upper part of the fractionating tower, one path of tower top dry gas is connected with a water-cooling feeding pipe, the other path of tower top dry gas is communicated with a pyrolysis dry gas heat exchanger and a high-temperature gas hot melting section, and residual dry gas is delivered as a product.

The utility model relates to the technical field of hydrogen drying devices, in particular to a low-pressure, low-dew-point and low-pressure-drop hydrogen drying device which comprises an adsorption tower which comprises a tower A and a tower B, after water is cooled and separated through a regeneration cooler and a regeneration gas-water separator, the hydrogen enters an adsorption tower A through V1 to absorb water and dry to meet the requirement, the hydrogen is discharged out of the tower and passes through V7 to reach a gas using point, a small part of about 20% of gas is divided from dry gas at an outlet and is electrically heated to 180 DEG C, and the gas is sent to a tower B through V6 to regenerate and activate an adsorbent; hydrogen absorbing moisture is discharged from the tower and enters a gas inlet cooler and a gas inlet gas-water separator through a V4, the temperature of the cooled and dehydrated hydrogen is greatly increased after the cooled and dehydrated hydrogen is pressurized by a booster pump, the cooled and dehydrated hydrogen is converged with hydrogen at an inlet and then passes through a regeneration cooler and a regeneration gas-water separator, the cooled and dehydrated hydrogen returns to the adsorption tower A to adsorb moisture, and first-step pressurized reflux drying is completed; and similarly, hydrogen is adsorbed from the tower B, is subjected to split-flow heating regeneration, passes through the tower A, is pressurized and then flows back to the tower B again.

A waste plastic and petroleum mixed feeding catalytic cracking process comprises a waste plastic self-hot melting dechlorination pretreatment process, a waste plastic molten liquid and petroleum catalytic cracking process and a cracked oil gas fractionation process. Part of recycle oil and cracking dry gas in the cracking oil-gas fractionation sub-process are cyclically returned to the waste plastic self-heating melting dechlorination pretreatment process to serve as high-temperature melting oil and feeding carrying gas, and waste plastic melting liquid in the waste plastic self-heating melting dechlorination pretreatment process is sent out to be mixed with crude oil to serve as a raw material for catalytic cracking of the waste plastic melting liquid and the crude oil; the oil gas is produced to the maximum extent through efficient dispersion atomization feeding and catalytic cracking of an atomizing nozzle, and then the cracked oil gas is subjected to fractionation to produce gasoline, diesel oil, recycle oil and cracked dry gas.

The invention discloses a low-temperature cold trap water removal device which comprises more than two water removal channels which are connected in parallel; each water removal channel comprises a refrigeration water removal gas path and an ice melting purging gas path which are connected in series; each refrigeration and water removal gas path is also connected with an inlet of a dry gas collection gas path, and an outlet of the dry gas collection gas path is used for being connected with an analyzer; and each water removal channel is connected with a controller, and the controller is used for controlling the refrigeration water removal gas paths and the ice melting purging gas paths of the different water removal channels to operate in a staggered mode. According to the application, moisture in the gas to be dewatered can be effectively removed, frost can be timely removed, and related phenomena such as relatively large dead volume of the cold trap can be avoided.

A production device for preparing wax-based chemicals and alpha-olefin through catalytic pyrolysis of a waste plastic downer is characterized in that clean waste plastic is crushed and then is connected into a water-cooling feed pipe through a controllable feeder, a pyrolysis dry gas injection port is formed in the top end of the water-cooling feed pipe, and the bottom end of the water-cooling feed pipe is connected into a hot-melting dechlorination reactor; one path of the bottom of the hot-melting dechlorination reactor returns to the upper part of the hot-melting dechlorination reactor, the other path of the bottom of the hot-melting dechlorination reactor is connected with an atomization feeding nozzle, and a fuel gas extraction opening in the top of the hot-melting dechlorination reactor is communicated with the bottoms of the desulfurization dechlorination reactor and the riser regenerator; atomization feeding nozzles are symmetrically installed on the upper middle portion of a downer catalytic pyrolysis reactor, the bottom of the downer catalytic pyrolysis reactor is connected with an oil-gas-solid separator, a gas-phase outlet of the oil-gas-solid separator is communicated with a fractionating tower, and a solid-phase outlet of the oil-gas-solid separator is communicated with the bottom of a riser regenerator; a first-stage gas-solid separator and a second-stage gas-solid separator are sequentially mounted at the top of the riser regenerator and are communicated with the top of the downer catalytic pyrolysis reactor and the bottom of the riser regenerator; the top of the fractionating tower is communicated with the water-cooling feeding pipe, and the tower bottom is communicated with the upper part of the hot-melting dechlorination reactor.

The invention discloses a composite aperture molecular sieve catalytic cracking catalyst and a preparation method thereof, and belongs to the technical field of catalytic cracking, the composite aperture molecular sieve catalytic cracking catalyst comprises 20-30% of a macroporous material, 40-60% of a mesoporous-microporous molecular sieve and 20-30% of a binder; the macroporous material is a macroporous alumina / kaolin compound, and the macroporous alumina / kaolin compound takes macroporous alumina as a core and macroporous kaolin as a shell; the mesoporous-microporous molecular sieve is a ZMQ-1 molecular sieve. According to the mode, the macroporous material is prepared from the macroporous aluminum oxide / kaolin compound, the ZMQ-1 molecular sieve and the binder, and the macroporous material takes macroporous aluminum oxide as a core and macroporous kaolin as a shell in the macroporous aluminum oxide / kaolin compound. The catalyst for catalytic cracking of heavy oil has the advantages of high yields of dry gas, liquefied gas, gasoline and diesel oil, low yields of coke and heavy oil and the like. The secondary cracking reaction of gasoline or diesel oil can be effectively prevented, so that the yield of gasoline and diesel oil is improved.

The utility model discloses a drying device for workpieces after electroplating, and relates to the technical field of workpiece processing equipment. The key points of the technical solution are: comprising a box body, wherein a feed port and a discharge port are respectively arranged on both sides of the box body, wherein a guide plate extending inward is arranged on the discharge port, and a partition net is arranged on the top of the box body; and further comprising a drying device arranged inside the box body and corresponding to the positions of the feed port and the discharge port, wherein the drying device comprises a driving device, a workpiece guiding device, a bearing box and a gas guiding device. The utility model adopts a cyclic drying form, wherein the bearing box with the workpiece in the process of circular rotation will contact the dry gas diffused from the gas guiding device between the disc seats, and at the same time, the loading end face and the connecting end face of the bearing box are inclined structures, and during the circular motion of the bearing box, the workpiece will be turned over for many times and the position will be adjusted, so that different end faces of the workpiece are fully in contact with the dry gas, and a comprehensive drying effect is achieved.

The embodiment of the utility model provides a clamp for optical module testing and optical module testing equipment, and the clamp comprises a housing which comprises a top plate, a bottom plate and side plates which are connected with the top plate and the bottom plate, and the side plates, the top plate and the bottom plate form an accommodation space; the top plate is provided with an airflow channel for introducing dry gas into the accommodating space; the temperature control assembly is arranged in the accommodating space; the limiting structure is provided with a limiting through hole, the limiting structure is arranged corresponding to the temperature control assembly, the limiting through hole is provided with a limiting boss corresponding to the temperature control assembly and an inserting cavity corresponding to the limiting boss, and the inserting cavity is used for inserting the optical module to be detected; and the driving mechanism is arranged in the accommodating space and is in transmission connection with the temperature control assembly. According to the optical module testing device, the shell is composed of the top plate, the bottom plate and the side plates, and the side plates, the top plate and the bottom plate define the relatively-closed containing space, so that the air tightness of the shell is improved, air exchange between the shell and the outside is reduced, and normal proceeding of optical module testing is guaranteed.

The invention discloses a liquid engine thermal test post-processing method which comprises the following steps: after an engine thermal test is finished, opening each discharge path of an engine, and injecting preset dry gas from a pump inlet, a thrust chamber head cavity and a generator head cavity of the engine for at least a first preset duration so as to blow off and rewarm an inner cavity of the engine; in the blowing and rewarming process of the engine, preset dry gas is injected from the gas path blind cavity of the engine and lasts for at least a second preset duration, so that the gas path blind cavity of the engine is blown; and after blowing and rewarming of the engine are finished, dew point detection is conducted on the target point position of the engine till the detection result of dew point detection meets the preset condition. On one hand, the engine thermal test post-treatment process is simplified, the engine thermal test period is shortened, on the other hand, the engine inner cavity and the engine blind cavity are blown off at the same time, the blowing-off effect of the engine is improved, and the reusability of the engine is greatly improved.

The utility model belongs to a fire-fighting safety management and control device in the technical field of energy storage industry, and particularly discloses a fire-fighting device for safety management and control of an energy storage battery unit. According to the fire-fighting device for safety management and control of the energy storage battery unit, the exhaust port is used for being communicated with the equipment air inlet of the equipment to be detected, the air inlet is used for being communicated with the equipment exhaust port of the equipment to be detected, gas in the equipment to be detected enters the gas detection assembly through the air inlet of the fire-fighting device, and the gas detection assembly detects components of the gas; the detection cavity, the isolation cavity and the dehumidification cavity which are independently arranged are arranged in the shell, wet gas in the detection cavity and the isolation cavity is prevented from being mixed with dry gas in the dehumidification cavity, and it is guaranteed that the gas exhausted after treatment in the dehumidification cavity is the dry gas; the fire-fighting device provided by the utility model integrates the functions of dehumidification, gas detection and gas extinguishing medium spraying, so that the functions of the fire-fighting device are diversified, the integration level of the functions of the fire-fighting device is improved, and the working efficiency is improved.

The utility model discloses a carbon dioxide drying system combining carbon capture and methanol synthesis, which is characterized in that carbon dioxide gas with water vapor is firstly cooled by a heat exchanger, the cooling capacity of the heat exchanger is from heat absorbed by throttling expansion of pressurized carbon dioxide, the primarily dried gas enters a first-stage vortex compressor, the gas is pressurized to about 3MPa, and the pressure of the gas is increased to about 3MPa; according to calculation, a small amount of condensate water can be produced in the pressurization process, the condensate water is stored in a tank and discharged regularly, the pressurized carbon dioxide gas is cooled, enters a heat exchanger and is throttled to 1 MPa through throttling expansion, and it is predicted that the gas can be cooled by about 25 K, and cold energy is provided for cooling the gas in the previous step. After throttling, about 1 MPa of carbon dioxide gas enters the adsorption dryer, and due to the fact that the pressure of the carbon dioxide gas is increased, the dryer can not adopt a mode of compressed air purging regeneration and a mode of replacing air with air supplied by a carbon dioxide gas cylinder, and maintenance steps are saved.

A multi-stage cooling system includes a pressure-resistant container and a parallel-mode cooling device that is at least partially arranged in the pressure-resistant container. The pressure-resistant container can store a dry gas therein that has a dew point temperature being less than −10° C. and that has a pressure being greater than 1 atm. The parallel-mode cooling device includes two heat exchangers immersed in the dry gas. The two heat exchangers respectively have a first cooling critical value and a second cooling critical value that is less than the first cooling critical value. The parallel-mode cooling device is configured to reduce a temperature of the dry gas to the first cooling critical value through one of the two heat exchangers having a lower operation power, and then further to reduce the temperature of the dry gas through another one of the two heat exchangers having a higher operation power.

A method for improving flowmeter accuracy is provided. The flowmeter comprises at least one flow tube, at least one pickoff sensor attached to the flow tube, at least one driver attached to the flow tube, and meter electronics in communication with the at least one pickoff sensor and driver. The method comprises the steps of vibrating at least one flow tube in a drive mode vibration with the at least one driver and receiving a sensor signal based on a vibrational response to the drive mode vibration from the at least one pickoff sensor. An unremediated density is derived with the flowmeter. An unremediated mass flow is derived with the flowmeter. An extended drive gain is derived with the flowmeter. At least one flow variable is received. A density ratio is calculated. A plurality of wet gas coefficients is provided. A dry gas mass flow rate is calculated with the density ratio and at least one of the plurality of wet gas coefficients.

The invention relates to the technical field of oil field oil gas gathering and transportation, in particular to an oil storage tank breather valve and hydraulic safety valve winter anti-freezing and anti-blocking device which comprises an oil storage tank body, a connecting pipe, a flame arrester, a hydraulic safety valve, a breather valve, a mounting pipe and a first blocking net. The oil storage tank is reasonable and compact in structure and convenient to use, liquid in mixed steam can be filtered and then left in the oil storage tank body through the arrangement of the first blocking net, dry gas is exhausted, the contact amount of moisture, a valve disc and liquid seal oil is reduced, the phenomena of water accumulation in a liquid seal groove, freezing in winter and freezing and frosting of a pressure valve disc in winter can be effectively reduced, and the service life of the oil storage tank is prolonged. Meanwhile, the fire barrier net can be prevented from being in contact with mixed wet steam, corrosion of the fire barrier net is effectively prevented, the service life is prolonged, liquid filtered by the first blocking net contains oil components, oil loss is reduced, and the device has the advantages of being safe, capable of saving labor, simple, convenient and efficient.

The invention discloses a process for adsorbing and separating ethane by using catalytic dry gas, and aims to solve the technical problems that in the prior art, the ethane adsorption effect is relatively poor, an adsorbent is not easy to regenerate, the chemical stability is relatively poor, next adsorption can be carried out only after desorption is completed after adsorption saturation, and the working efficiency is low. The process comprises the following steps: S1, pretreating dry gas; s2, preparing an adsorbent; and S3, the dry gas pretreated in the S1 is pressurized to the pressure condition required by the process through a compressor, and then the dry gas is cooled through circulating water and low-temperature refrigerant water in sequence. According to the process, the adsorbent is prepared by loading copper chloride on activated carbon, the prepared adsorbent has a better adsorption effect on ethane, the adsorbent can be regenerated and is good in chemical stability, and through the design of the two adsorption beds, one adsorption bed performs desorption while the other adsorption bed performs adsorption operation; and continuous adsorption and desorption operation can be realized, and the working efficiency is higher.

The utility model provides a drying device which comprises a heating cylinder and a stirring cylinder rotationally arranged in the heating cylinder, a feeding assembly used for grinding raw materials is arranged on one side of the heating cylinder, a first air bellow is arranged on the outer side of the feeding assembly in a communicating mode, a cylinder cover used for opening and closing the heating cylinder is arranged on the other side of the heating cylinder, and a second air bellow is arranged on the other side of the heating cylinder. A second air bellow is arranged above the barrel cover, a cooling box is fixedly arranged on one side of the heating barrel, an exhaust pipe is arranged on the second air bellow in a communicating mode, the free end of the exhaust pipe penetrates through the cooling box and then is communicated with the first air bellow, and a drainage pipe is further arranged at the bottom of the exhaust pipe in a communicating mode. Through the first air bellow, the second air bellow and the exhaust pipe, hot air in the heating cylinder is circulated, loss and waste of heat energy are reduced, meanwhile, through the cooling box and the drainage pipe, when gas passing through the cooling box in the exhaust pipe is changed into dry gas from high-temperature and high-humidity gas, the purpose of rapid drying is achieved.

The invention discloses a suspension bridge main cable with a dehumidification structure and a dehumidification method, the suspension bridge main cable comprises a cable strand, a winding wire and a wrapping tape, the winding wire is wound outside the cable strand, and the wrapping tape is wound outside the winding wire; each dehumidification assembly comprises a dehumidification inner cylinder and a shell, the inner cylinder is fixedly connected with a convex column, the convex column and the shell are integrally formed, an airflow channel is formed between the convex column and the shell, the shell is provided with a second through hole matched with the channel, one end of the channel is communicated with a negative pressure dehumidification mechanism, a moisture absorption layer is arranged outside the shell, and a heating pipe is fixedly connected in the moisture absorption layer; a one-way nozzle and a sliding movable dehumidification assembly are arranged in the inner cylinder, and the assembly sprays a dehumidification medium to the main cable through the nozzle. Compared with the prior art, dry gas can penetrate through the main cable, targeted drying is achieved, false dehumidification is avoided, and the situation that the service life of the main cable is shortened due to moisture is prevented.

The invention relates to a core for a fuel cell humidifier and the fuel cell humidifier. A core for humidifying a dry gas to be supplied to a fuel cell stack using a wet gas, and the core includes: an inner case having openings at both ends; a plurality of hollow fiber membranes, wherein the plurality of hollow fiber membranes are accommodated in the inner shell; a first fixing layer for fixing one side of the hollow fiber membrane; a second fixing layer for fixing the other side of the hollow fiber membrane; and a plurality of first coating portions attached to one side of each of the hollow fiber membranes and coupled to the first fixing layer so as to protrude from the first fixing layer toward the second fixing layer, each of the first coating portions is formed to have a lower hardness than the first fixing layer.

The utility model discloses an integrated heat exchanger suitable for frozen drying machine, including the casing, the casing is equipped with the outlet of drying gas, the inlet of water gas, the coolant outlet and the coolant inlet from top to bottom, the upper portion is equipped with the heat exchanger in the casing, still be equipped with the evaporimeter in the casing, still be equipped with the gas liquid separation chamber of gas in the bottom of casing, the evaporimeter is located heat exchanger below and communicates with the heat medium outlet of heat exchanger, the backflow channel of gas is established between evaporimeter and heat exchanger and the inside of casing, and the gas outlet of evaporimeter and the cold medium inlet of heat exchanger communicate with backflow channel. The utility model divides and sets up the upper and lower end in the casing with heat exchange and evaporation function, can simplify the structure setting in the casing, and the production cost is simplified, after setting evaporimeter below heat exchanger, can realize the step -by -step cooling of airflow from top to bottom, is favorable to the gathering of condensate in the bottom of casing and gas -water separation in the cooling process, thereby guaranteeing the drying effect of gas.

A system and method for adjusting the dew point temperature of a gas, relating to the field of fuel cells, to solve the problem of how to improve the efficiency of high and low dew point adjustment in a fuel cell test system; it includes a gas filtration unit, a flow control unit, a switching unit, a humidification unit, a mixing unit, and a temperature control unit; among them, the switching unit includes three gas paths: a dry gas branch, a wet gas branch, and a dry-wet switching branch, and the dry-wet switching branch can be flexibly switched between the dry gas branch and the wet gas branch; the present invention adjusts the dew point temperature of the gas entering the fuel cell stack by controlling the flow ratio of the dry gas and the gas entering the humidification tank, and realizes the rapid distribution of the flow rates of the dry gas and the wet gas in the fuel cell test system by using a three-way valve, improving the utilization rate of system components and reducing the occupied space size, greatly improving the use efficiency of the equipment and reducing the cost of the system.

This invention relates to an online maintenance device and method for leveling guide wheels in a rubber diaphragm-sealed dry gas holder. The online maintenance device for leveling guide wheels includes a vertical lifting device, a horizontal guide rail, a horizontal moving device, a power traction device, and a control system. The vertical lifting device consists of a first lifting device, a second lifting device, and a synchronous drive device. The horizontal moving device is mounted on the horizontal guide rail and consists of a moving trolley and suspended guide wheels. One end of the moving trolley is connected to the power traction device via a traction steel wire rope. This invention enables rapid online maintenance and replacement of leveling guide wheels without shutting down the gas holder; it significantly improves the maintenance efficiency of leveling guide wheels while eliminating energy waste, environmental pollution, and safety risks caused by gas holder shutdowns.

The present application provides a maintenance-free desiccant for transformers, a control method and a desiccant system. According to the real-time monitored gas pressure value and gas humidity value in the air cavity of the transformer oil tank, the desiccant body, the first air outlet pipeline and the first air inlet pipeline of the transformer maintenance-free desiccant are controlled by a set control device to perform gas desiccant recovery operation and / or dry gas replenishment operation. The present application adopts a double-tube maintenance-free desiccant structure to separate the air inlet pipeline from the air outlet pipeline, and when the exhaust gas is dry, the dry gas can be directly recovered to ensure that dry gas can still be replenished for the transformer oil tank in rainy or humid conditions. At the same time, the present application adopts particle drying technology, so that the silica gel particles used for gas desiccant are always in a dry state, thereby effectively reducing the number of times the silica gel particles are replaced, realizing the maintenance-free function of the desiccant, and thus reducing the maintenance cost of the desiccant.

The utility model provides a humidifying tank and a breathing machine with the same, the humidifying tank comprises a tank body, the tank body is provided with a humidifying cavity, an air inlet path for dry air to flow in and an air outlet path for humidified air to flow out, the tank body comprises a tank body main body and a cover body, and the cover body comprises a cover body main body and a cover plate. An air inlet path and an air outlet path are defined by the cover plate and the cover main body; the reference plane where the cover plate is located has a first preset direction and a second preset direction which are perpendicular to each other, and a first projection of the first air inlet on the reference plane and a second projection of the second air outlet on the reference plane are sequentially arranged in the first preset direction; in the second preset direction, a third projection of the first air outlet on the datum plane and a fourth projection of the second air inlet on the datum plane are arranged at intervals with the first projection; in the first preset direction, the third projection and the fourth projection are both located between the first projection and the second projection. The humidifying tank solves the problem that a humidifying tank in the prior art is low in humidifying efficiency.

A moisture removal apparatus for a breathing circuit may include a breathing gas conduit configured to receive a flow of breathing gas having a first humidity level. The apparatus may include a dry gas conduit adjacent to at least a portion of the breathing gas conduit, the dry gas conduit configured to receive a flow of dry gas having a second humidity level lower than the first humidity level. The apparatus may also include a feeding conduit extending through at least a portion of the dry gas conduit, the feeding conduit configured to introduce the dry gas into the dry gas conduit. The apparatus may further include a moisture transmission pathway configured to enable transfer of moisture from the breathing gas to the dry gas based on the humidity differential.

The invention relates to the technical field of object storage, in particular to a power supply tool storage device and a use method, mainly on one hand, the positions of storage supporting plates are adjusted through an arranged regulation and control assembly, the storage space of the vertically adjacent storage supporting plates can be adjusted, and the storage work flexibility of the storage supporting plates is improved; corresponding adjustment can be carried out according to the sizes of tools and articles, and the utilization rate of the storage space is increased; a dry gas conveying pipe is used in cooperation with the supporting assembly and the regulation and control assembly, a dry storage environment is provided for the interior of the storage cabinet body, a net box body is arranged on the back side of the storage cabinet body, on one hand, external humid gas or impurities are prevented from entering the storage cabinet body as much as possible in the storage process, and the storage effect is improved; in addition, the power supply tool storage device can be used in cooperation with a dry gas conveying pipe, the circulation performance of dry gas is improved, and therefore the power supply tool storage device provides a matched auxiliary device to meet the storage work requirement of the power supply tool storage device.

The application belongs to the technical field of generators, and discloses an energy-saving generator set cylinder temperature difference power generation waste heat recovery device, which comprises a generator body, the bottom end of the generator body is fixedly connected with a bottom plate, the top end side wall of the bottom plate is fixedly connected with a control machine box, and a waste heat recovery part is arranged between the bottom plate and the generator body; through nitre powder dissolution heat absorption, cooling water body temperature sudden drop, cylinder cooling strengthening, cam control nitre putting and piston pressurization are triggered, no additional energy consumption, cooling water heat absorption gasification, water vapor is baffle stored by an inclined plate, dry gas is guided to a gas converter for secondary utilization, sponge pad adsorbs liquid water in water vapor, so that the dryness of the gas is ensured, the device realizes double innovation of nitre dissolution heat absorption strengthening cooling and water vapor waste heat gradient recovery, significantly improves generator waste heat utilization rate, the coupling of the cam, impeller and tray in the mechanical linkage design is realized, zero-power-consumption automatic operation is realized, and the device has high industrial application value.

The utility model relates to a constant weight measuring instrument which comprises a heat insulation and preservation container, a cooling layer, a bearing unit, a weighing unit, a transmission unit, an air supply unit and an exhaust unit, and a first cooling flow channel is arranged in the heat insulation and preservation container; the cooling layer is arranged outside the heat insulation container; dry gas or filtered air is introduced into the test cavity through the air supply unit, and high-temperature air in the test cavity is exhausted through the exhaust unit, so that the temperature in the test cavity is brought out, and the temperature of the test cavity is reduced; meanwhile, the testing cavity can be cooled through a cooling medium in a first cooling flow channel arranged in the heat insulation and preservation container; besides, the test cavity is further cooled through a cooling layer arranged outside the heat insulation and preservation container, so that the interior of the test cavity is rapidly cooled to a weighable temperature, and the weighing efficiency is improved; and through the cooperation of the transmission unit and the weighing unit, the weighing operation of the weighing unit is realized, and the weighing efficiency is further improved.

The invention discloses a residual oil and coal tar combined processing technique which comprises the following steps: (1) cutting a coal tar raw material to obtain light coal tar and heavy coal tar; (2) in the presence of hydrogen, mixing the light coal tar and the residual oil raw material obtained in the step (1), mixing with alkali metal, and reacting in an alkali metal treatment reaction zone; (3) carrying out solid-liquid separation on the alkali metal treatment reaction effluent obtained in the step (2) to obtain a liquid-phase material flow; and (4) mixing the liquid-phase material flow obtained in the step (3) and the heavy coal tar obtained in the step (1), feeding the mixture into a catalytic cracking reaction zone, contacting the mixture with a catalytic cracking catalyst for reaction, and separating the reaction effluent to obtain dry gas, liquefied gas, gasoline, light diesel oil and heavy distillate oil. According to the method, coal tar is introduced into an alkali metal treatment reaction system for the first time, the coking reaction can be reduced, the liquid phase yield is increased, and combined processing of residual oil and coal tar is achieved.

The utility model relates to the technical field of air supply equipment, in particular to a compressed air supply device for operating a vehicle air suspension system, which comprises a compressor, a water separation device, a first communicating pipe, a second communicating pipe and a dryer device. Wherein the compressor is provided with an exhaust end, and the water separation device and the dryer device are sequentially connected to the second communicating pipe in the air inflation direction of the air using unit. The water separation device is installed between the compressor and the dryer device, the water separation device is used for drying gas before the gas enters the dryer device, moisture entering the dryer device is reduced, the drying pressure of the dryer device is relieved, and therefore the service life of the dryer device is prolonged; moreover, through primary drying of the water separation device and secondary drying of the dryer device, the gas drying effect is improved, thorough gas dehumidification is guaranteed, and then smooth regulation and control of the vehicle air suspension device are guaranteed.

The invention relates to the technical field of osmic acid solution preparation, in particular to an osmic acid solution preparation device and a use method thereof, and solves the technical problems that in the prior art, when a highly toxic osmic acid ampoule bottle is manually treated, the exposure risk of an operator is high, and the dissolution speed of osmic acid crystals is low when the ampoule bottle is directly put into a ground bottle. The invention discloses an osmic acid solution preparation device and a use method thereof. The osmic acid solution preparation device comprises a glass shell, and a moving overturning and clamping assembly capable of clamping and automatically overturning an ampoule bottle, a bottle opening mechanism for breaking off the head of the ampoule bottle, a glass gas outlet pipe system for blowing dry gas into the bottle to transfer crystals and a cover closing mechanism for automatically closing a cover of a receiving bottle are arranged in the glass shell. The full-process automatic sealing operation of transferring the ampoule bottle filled with the osmic acid crystal from bottle opening, overturning and crystal purging to automatic cover closing of the ground bottle is realized, so that an operator is completely isolated from the highly toxic osmic acid crystal and steam thereof in the whole preparation process.