7results about How to "Improve liquefaction efficiency" patented technology

The application discloses an LNG filling station BOG recovery system and a working method thereof, and belongs to the technical field of LNG filling station BOG recovery system.The LNG filling station BOG recovery system comprises a BOG liquefaction recovery line, an LNG unloading line and an LNG filling process, wherein a liquid phase port of an LNG tank car is connected with an LNG immersion liquid pump, a gas phase port of the LNG tank car is connected with an LNG booster gasifier, and the BOG recovery system is connected with an LNG storage tank through pipelines at both ends; two turbine expansion and compression integrated machines are connected in parallel in the recovery system; the LNG storage tank is connected with an LNG filling mechanism through a pump, a valve and the like to form a loop; and a plurality of adjusting valves are arranged on each process pipeline in the system and used for safety control and switching of a working line.The working method of the system is also disclosed.The LNG filling station BOG recovery system has the advantages of recovery of unstable BOG generated under various operating conditions of the LNG filling station, fast cold start in a liquefaction process, safety and reliability, long-term economy and the like.

The utility model relates to the field of chemical production, in particular to a titanium tetrachloride cold recycling device which comprises a cold titanium tetrachloride storage tank, the device further comprises an atomizing spray head and a spray nozzle, the upper end of the cold titanium tetrachloride storage tank is fixedly connected with a supporting frame, the upper end of the supporting frame is fixedly connected with a second-stage condenser, a direct cooler and a third-stage condenser, and the inner wall of the direct cooler is fixedly connected with an annular flow dividing pipe. According to the utility model, through the use of the atomizing spray head and the spray nozzle, spraying is carried out from different angles and positions, mixed gas is further cooled, and part of gas is liquefied and flows into the cold titanium tetrachloride storage tank along the storage hopper, so that the cooling area and the uniformity are increased, and the liquefaction efficiency and the cooling effect are improved; a gas-liquid mixture is fed into a third-stage condenser for deep cooling, residual titanium tetrachloride gas is completely liquefied and flows into a cold titanium tetrachloride storage tank, liquid titanium tetrachloride in the storage tank is pressurized through a circulating system and then is fed back to a direct cooler to be used as a cooling medium, and the cooling and liquefying efficiency is improved.

The present application relates to the field of preparation of bio-based multi-level pore carbon material and environmental governance, in particular to a kind of bio-based three-dimensional multi-level pore carbon material and its preparation method and application.The preparation method of bio-based three-dimensional multi-level pore carbon material of the present application includes the following steps: biomass raw material and phenol, composite acid catalyst are mixed and reacted 1, to obtain bio-based liquefied material;Bio-based liquefied material is mixed with composite base catalyst and polyformaldehyde, and then reacted 2, to obtain bio-based liquefied resin;Bio-based liquefied resin is mixed with surfactant, foaming agent, metal-based DES and curing agent, and then foamed, to obtain carbonization precursor;The carbonization precursor is subjected to carbonization treatment, and then ultrasonic water washing is carried out, to obtain bio-based three-dimensional multi-level pore carbon material.The bio-based three-dimensional multi-level pore carbon material prepared by the method of the present application has uniform structure, contains micron-nanometer multi-level pore structure, and has high adsorption performance.

The application provides a natural gas residual energy recycling system, which comprises a cold energy unit, a liquefaction unit and at least one cold exchange unit, wherein the cold energy unit comprises a cold energy pipeline and at least one cold device connected to the cold energy pipeline, the cold energy pipeline is connected between a first natural gas pipeline and a second natural gas pipeline, the gas pressure in the first natural gas pipeline is greater than that in the second natural gas pipeline; the liquefaction unit comprises a liquefaction pipeline and a liquid storage tank connected to each other; and the at least one cold exchange unit is connected between the cold energy pipeline and the liquefaction pipeline. The cold energy unit, the liquefaction unit and the cold exchange unit solve the problems of low residual energy recycling efficiency and low residual energy use efficiency in the field of natural gas transmission, and also solve the problem of low types of recycled energy in the natural gas residual energy recycling system.

The utility model discloses a degreasing device of a vacuum heat treatment furnace, belongs to the technical field of sintering equipment, and aims to solve the problem of how to improve the liquefaction efficiency of high-temperature gas. The vacuum heat treatment furnace degreasing device comprises a degreasing box, an air inlet pipe, a first degreasing transverse pipe, a cooling pipe, a degreasing vertical pipe and an air outlet pipe. The degreasing box is provided with a cooling cavity, a liquid discharge pipe, an air inlet guide pipe and an air outlet guide pipe; the liquid discharge pipe, the air inlet guide pipe and the air outlet guide pipe are communicated with the cooling cavity; the other end of the first degreasing transverse pipe is connected with an air inlet guide pipe of the degreasing box; the cooling pipe is located in the cooling cavity, the first end of the cooling pipe is connected with the inner wall of the degreasing box, the second end of the cooling pipe linearly extends in the length direction of the cooling cavity and is provided with an opening, the cooling pipe divides the cooling cavity into two cavities, and the cavities in the cooling pipe communicate with the air outlet guide pipe. The bottom end of the degreasing vertical pipe is connected with the air outlet guide pipe of the degreasing box, the top end of the degreasing vertical pipe is connected with the air outlet pipe, and a Pall ring is arranged on the inner wall of the degreasing vertical pipe.

The vehicle-mounted scattered natural gas liquefaction system comprises a carrier, a storage tank, a low-temperature heat exchanger and a gas-liquid separator, and a fluid pretreatment device is arranged at an inlet of the low-temperature heat exchanger; the fluid pretreatment device comprises a buffering flow stabilizing mechanism, a throttling adjusting mechanism and a flow equalizing distribution assembly, and a heat exchange core body is fixedly arranged above the flow equalizing distribution assembly; the buffering flow stabilizing mechanism comprises a buffer, a turbine rotor is arranged in the buffer, the throttling adjusting mechanism is a Venturi tube, a floating body adjusting component is arranged on the throat portion of the Venturi tube, the flow equalizing distribution assembly comprises a conical distributor and a damping flow equalizing plate, and a plurality of flow dividing holes are formed in the conical surface of the conical distributor. And a plurality of bending holes are formed in the damping flow equalizing plate. By arranging the buffering and flow stabilizing mechanism, the throttling adjusting mechanism and the flow equalizing and distributing assembly, flow equalizing and stabilizing of fluid entering the heat exchanger are achieved.

The application discloses a low-temperature ethylene storage system suitable for total reserves less than or equal to 500 cubic meters, which comprises a low-temperature ethylene storage tank, a variable-frequency ethylene conveying pump, a liquid-phase ethylene distributor and an ice machine set. A high-temperature liquid-phase ethylene outlet is arranged at the bottom of the low-temperature ethylene storage tank and is communicated with a pipeline of the variable-frequency ethylene conveying pump. A discharge port of the variable-frequency ethylene conveying pump is communicated with a feeding port pipeline of the ice machine set. The liquid-phase ethylene distributor is arranged in the top of the low-temperature ethylene storage tank and is communicated with a liquid outlet pipeline of the ice machine set. The device can replace a diaphragm compressor and the ice machine set to realize the same cooling loss effect, effectively reduce production cost, improve production safety and reduce production energy consumption.