CN-121371832-B - Purifying and sewage filtering device for dimethyl carbonate raw material gas

CN121371832BCN 121371832 BCN121371832 BCN 121371832BCN-121371832-B

Abstract

The invention discloses a purifying and filtering device for dimethyl carbonate raw gas, which comprises a horizontally arranged cylinder body, wherein a tower type ladder filtering component and a translational pneumatic purging component are coaxially arranged in the cylinder body, the tower type ladder filtering component comprises a plurality of end face filtering parts and cylinder filtering parts which are sequentially and alternately connected, the beneficial effects of the invention are that the tower type ladder filtering component is designed to filter the dimethyl carbonate raw gas, the tower type structure of the tower type ladder filtering component can effectively increase the filtering area, thereby improving the filtering efficiency, the tower type ladder filtering component is provided with a matched end face filtering part and a cylinder filtering part, has axial airflow and radial airflow filtering functions, mainly performs axial filtering and is auxiliary according to the gas direction, the service life is long, and the translational pneumatic purging component and the spray cleaning component are designed to clean the tower type ladder filtering component according to the practical use characteristics of the end face filtering part and the cylinder filtering part, so that the cleaning is fast and efficient.

Inventors

LI YONGJUN
XU YONGBIAO
LIU ZIYANG
YU DEBAO
WANG BIN
SHI KAIYUAN
ZHANG JIE

Assignees

鄂尔多斯市双欣化学工业有限责任公司

Dates

Publication Date: 20260508
Application Date: 20251225

Claims (5)

1. The purifying and dirt filtering device for the dimethyl carbonate raw material gas is characterized by comprising a horizontally arranged barrel, wherein an air inlet is formed in one end of the barrel, a tower type ladder filtering component and a translation pneumatic purging component are coaxially arranged in the barrel, the tower type ladder filtering component comprises a plurality of end face filtering parts and cylindrical filtering parts which are sequentially and alternately connected, the end face filtering parts are used for filtering axial airflow, the cylindrical filtering parts are used for filtering radial airflow, an air outlet pipe is arranged above an air outlet end of the tower type ladder filtering component, the translation pneumatic purging component is used for purging and cleaning the end face filtering parts, a spraying and cleaning component is arranged above and below the tower type ladder filtering component, a recovery liquid tank is arranged at the bottom of the barrel, a recovery pipeline is connected to the recovery liquid tank, the recovery pipeline is connected with the barrel, and is positioned below the air outlet end of the tower type ladder filtering component, and a sewage draining pipeline and a liquid level observer are also arranged on the recovery liquid tank; the end face filtering part comprises an end face filtering plate, a plurality of step circular grooves are formed in the end face filtering plate, a net piece is arranged in each step circular groove, a quick disassembly and assembly pressing assembly is arranged in each step circular groove and used for pressing the net piece on the step surface of each step circular groove, the quick disassembly and assembly pressing assembly comprises a pressing ring, a center rod is arranged in the pressing ring, a sliding hole is formed in the center rod, the sliding hole extends out of the pressing ring, a pressure spring is arranged in the sliding hole, locking columns are arranged at two ends of the pressure spring and are in sliding connection with the sliding hole, the filter cartridge is characterized in that a locking hole matched with the locking column is formed in the inner wall of the step circular groove, a limiting rod is connected to the locking column, two limiting grooves are formed in the center rod, the limiting rods are respectively connected with the limiting grooves in a sliding mode, the translational pneumatic purging component comprises a plurality of blowing plate components matched with the end face filter plate, the blowing plate components are connected with a central air pipe, the initial end of the central air pipe is connected with a telescopic corrugated pipe, the telescopic corrugated pipe is connected with a high-pressure nitrogen pipeline, the high-pressure nitrogen pipeline is fixedly arranged on the cylinder body, a connecting plate is connected to the central air pipe, the connecting plate is connected with a piston rod of a cylinder, the cylinder is fixedly arranged on the outer wall of the cylinder body, the blowing plate components are respectively connected with the limiting grooves in a sliding mode, an air cavity is formed in the blowing plate, the air cavity is communicated with the central air pipe, a plurality of pipes matched with a net sheet are arranged on the blowing plate, the air cavity is communicated with the cylinder, the initial end of the central air pipe is fixedly arranged at the starting end of the telescopic corrugated pipe, the high-pressure nitrogen pipeline is connected with a high-pressure nitrogen pipeline, the high-pressure pipeline is fixedly arranged on the cylinder body, the cylinder body is fixedly arranged on the outer circumference of the cylinder body, the filter cartridge is fixedly arranged on the outer circumference of the cylinder body, and is sleeved with a wire mesh of the filter cylinder, and is fixedly arranged on the outer circumference of the filter cylinder, and is sleeved with the filter cylinder, and is used for blowing and has the radial screw holes.
2. The device for purifying and filtering the dimethyl carbonate raw material gas according to claim 1, wherein the mesh is provided with positioning holes, the step surface of the step round groove is provided with positioning pins matched with the positioning holes, and the height of the positioning pins is smaller than the thickness of the mesh.
3. The device for purifying and filtering dimethyl carbonate raw gas as claimed in claim 1, wherein a plurality of sealing ring pads matched with the mesh are arranged on the purging plate, and the air injection pipe is positioned in the sealing ring pads.
4. The dimethyl carbonate raw gas purifying and filtering device according to claim 1, wherein the spray cleaning assembly comprises a high-pressure steam pipeline, a plurality of spray heads are uniformly distributed on the high-pressure steam pipeline along the length direction, and the spray heads face the tower-type step filtering assembly.
5. The device for purifying and filtering dimethyl carbonate raw gas as claimed in claim 4, wherein ball valves are arranged on the high-pressure steam pipeline and the sewage pipeline.

Description

Purifying and sewage filtering device for dimethyl carbonate raw material gas Technical Field The invention relates to the technical field of chemical production raw material gas filtering equipment, in particular to a purifying and dirt filtering device for dimethyl carbonate raw material gas. Background The existing production process of dimethyl carbonate mainly adopts a transesterification method, and the main production process is that raw material propylene oxide and raw material gas (usually calcium carbide furnace tail gas is used as raw material gas, the main component is CO) are reacted to generate propylene carbonate, then propylene carbonate and methanol are reacted under the action of a catalyst to obtain a dimethyl carbonate product, because the dust content of the calcium carbide furnace tail gas is higher, the raw material gas is usually subjected to preliminary impurity removal through a first-stage cyclone separator and a second-stage cyclone separator and then enters a bag dust remover to remove dust again, but the tail gas produced by the dimethyl carbonate is used as raw material gas, the calcium carbide furnace tail gas contains more dust impurities, the tail gas still contains a certain amount of dust, tar and other impurities, the dust and the tar can not be transported and comprehensively utilized as chemical raw materials, therefore, a gas filtering device is used in the prior art, the main structure in the prior art comprises a conical filtering shell, a plurality of through holes are formed in the filtering shell, and the surface of the filtering shell is covered with a filtering silk screen, so that higher strength and a certain filtering effect are obtained, but the filter has certain defects that 1 and the dimethyl carbonate raw material gas is required to be removed again, the filtering efficiency is high, the filtering silk screen is required to be fully worn and completely, the silk screen is difficult to clean and completely because the silk screen is required to be replaced, and the filter screen is in a large size and the size is not uniform, or the size is not required to be completely worn and completely, and the filter is difficult to be worn and completely and worn and completely because the filter is worn and worn. Disclosure of Invention The technical problems to be solved are as follows: The invention aims to provide a purifying and filtering device for raw material gas of dimethyl carbonate, which solves the technical problems of low filtering efficiency, difficult cleaning, resource waste when a silk screen is replaced and the like of the impurity device for raw material gas in the production of dimethyl carbonate in the prior art. (II) technical scheme: The invention relates to a purifying and dirt filtering device for dimethyl carbonate raw gas, which comprises a cylinder body which is horizontally arranged, wherein one end of the cylinder body is provided with an air inlet, a tower type ladder filtering component and a translation pneumatic purging component are coaxially arranged in the cylinder body, the tower type ladder filtering component comprises a plurality of end face filtering parts and cylinder filtering parts which are sequentially and alternately connected, the end face filtering parts are used for filtering axial air flow, the cylinder filtering parts are used for filtering radial air flow, an air outlet pipe is arranged above the air outlet end of the tower type ladder filtering component, the translation pneumatic purging component is used for purging and cleaning the end face filtering parts, a spraying and cleaning component is arranged above and below the tower type ladder filtering component, a recovery liquid groove is arranged at the bottom of the cylinder body, a recovery pipeline is connected to the recovery liquid groove, the recovery pipeline is positioned below the air outlet end of the tower type ladder filtering component, and a sewage draining pipeline and a liquid level observer are also arranged on the recovery liquid groove. Further, the end face filtering part comprises an end face filtering plate, a plurality of step circular grooves are formed in the end face filtering plate, meshes are installed in the step circular grooves, a rapid disassembly and assembly pressing assembly is installed in the step circular grooves, and the rapid disassembly and assembly pressing assembly is used for pressing the meshes on step faces of the step circular grooves. Further, the quick assembly disassembly compresses tightly the subassembly and includes the clamping ring be provided with the center pole in the clamping ring center pole in seted up the slide hole, the slide hole extends to outside the clamping ring the pressure spring is installed to the slide hole in the pressure spring both ends all are provided with the locking post, the locking post with slide hole sliding connection set up on the inner wall of step circular slot with lock