Method and system for preventing cracking gas compressor in natural gas acetylene device from being blocked

Abstract

The invention discloses a method and a system for preventing a cracking gas compressor in a natural gas acetylene device from being blocked, relates to the technical field of chemical engineering, and is characterized in that a self-cleaning carbon black filter is additionally arranged at a carbon black cooling water outlet of the cracking gas compressor. A plurality of layers of hollow metal sintered filter plates are arranged in the filter, a carbon scraper is arranged at the upper part of each layer of filter plate, and the carbon scrapers are matched with the filter plates to scrape, remove and send out carbon black filter cake layers formed on the filter plates; the filtered carbon black water enters a collecting pipe through a filter plate and then is sent out of the filter; a carbon black water aeration treatment tank is additionally arranged at the downstream of a self-cleaning carbon black filter, and air fed by an aeration fan is used for carrying out aeration treatment on carbon black cooling water after solid carbon black is removed in the treatment tank, so that a large amount of high-grade alkyne substances dissolved in water are removed, and the generation amount of polymers in a carbon black cooling water system is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of chemical engineering, and more particularly to the technical field of a method and system for preventing a cracking gas compressor in a natural gas acetylene device from being blocked. Background Art

[0002] As an important chemical raw material, acetylene is usually produced by the calcium carbide process and the natural gas partial oxidation process. Compared with the calcium carbide process, the natural gas process has the advantages of low energy consumption, full utilization of by-products, and low environmental pollution. It has been widely used at home and abroad. In the natural gas process, natural gas is cracked, compressed, and concentrated to produce acetylene products.

[0003] In the cracking process of the natural gas to acetylene unit, natural gas and oxygen are preheated and cracked in the reactor (cracking furnace) to generate cracked gas containing acetylene, carbon monoxide, carbon dioxide, hydrogen, higher alkynes and carbon black. The cracked gas is sent to the cracked gas compressor after pretreatment in the cooling scrubber and electric filter.

[0004] The cracking gas compressor is the key compressor of the natural gas to acetylene plant, with an inlet and outlet pressure of 0.9 / 11.9barA, and the gas volume varies according to the scale of the plant. Since the cracking gas contains carbon black, high-grade acetylene and various impurities, polymers will be produced during the compression process. It also contains highly dangerous acetylene gas, and the temperature must be strictly controlled during the compression process. In order to adapt to the operating conditions, the compressors of this type of gas in the natural gas to acetylene plant are all water-sprayed screw type. The temperature of the compressed gas is controlled by spraying carbon black water to the body and the contact cooler between the compressor sections to absorb the compression heat; at the same time, after the acetylene in the cracking gas is saturated with water, it is not easy to decompose and explode, thereby reducing the danger of compression.

[0005] The cooling water (carbon black cooling water) of the cracking gas compressor is in direct contact with the cracking gas in the compressor body and the inter-stage cooler. The carbon black water in this system is recycled after cooling. Carbon black, higher acetylene homologues and other substances rich in the cracking gas will inevitably accumulate in the cooling water system, causing the water quality to deteriorate. In particular, the higher acetylene substances will generate polymers under the conditions of increased temperature and pressure. The polymer adheres to the carbon black to form a viscous complex substance, which is easy to block the system and cause a series of serious accidents such as screw locking and shaft breaking in the compressor. The cracking gas compressor of the existing natural gas to acetylene unit will be shut down for maintenance many times every year due to blockage, which seriously affects the continuous and stable operation of the unit and causes damage to key equipment. Summary of the invention

[0006] The purpose of the present invention is to solve the above technical problems and provide a method and system for preventing the blockage of the cracked gas compressor in the natural gas acetylene device.

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] One aspect of the present invention provides a method for preventing blockage of a cracked gas compressor in a natural gas acetylene device, comprising the following steps:

[0009] Step S1, adding a carbon black filter at the carbon black cooling water outlet of the cooling water system of the cracked gas compressor;

[0010] Step S2, a carbon black water aeration treatment tank connected to the carbon black filter is added downstream of the carbon black filter, and the carbon black water aeration treatment tank uses a large amount of air sent by the aeration fan to aerate the carbon black cooling water after the solid carbon black is removed, so as to remove the higher acetylene substances dissolved in the carbon black cooling water, thereby reducing the amount of polymer generated in the carbon black cooling water system;

[0011] Step S3, the mixed gas (air + high-grade acetylene gas + acetylene, etc.) at the outlet of the carbon black water aeration treatment tank is sent to the CO furnace heat exchanger tube through a pipeline; then enters the CO converter to reach the catalytic reaction temperature required for the CO converter reaction;

[0012] Step S4, the mixed gas preheated in the CO furnace heat exchanger is catalytically converted in the CO converter by a platinum-palladium catalyst to convert harmful substances such as higher alkynes in the mixed gas into carbon dioxide and water;

[0013] Step S5: The heat of the catalytic conversion reaction causes the heat of the outlet gas of the CO converter to be recovered by the raw natural gas preheater.

[0014] Step S6, the exhaust gas from the top of the raw natural gas preheater enters the shell side of the CO furnace heat exchanger, and after preheating the mixed gas to be reacted from the carbon black water aeration treatment tank, the temperature is reduced to meet the emission standards;

[0015] Step S7, the carbon black cooling water after filtering and aeration in step S1 and step S2 is pressurized by a carbon black water circulation pump and cooled by a carbon black water cooler, and then is circulated and used by the cracking gas compressor.

[0016] Specifically, this method can effectively solve a series of serious problems such as blockage of cracking gas compressor, screw locking, and broken shaft caused by the accumulation of carbon black and high-grade acetylene polymers in the carbon black cooling water system, and recover heat energy to preheat the raw natural gas required by the device, thereby increasing energy utilization efficiency. The implementation of this method can effectively reduce the maintenance frequency of cracking gas compressors, avoid compressor damage, extend the annual operating time of natural gas to acetylene devices, reduce the intensity of maintenance work, fully recover reaction heat, and reduce the consumption of fuel gas in natural gas heating furnaces.

[0017] In one embodiment, in step S2, about 95% of higher acetylenic substances dissolved in the carbon black cooling water can be removed, thereby significantly reducing the amount of polymer generated in the carbon black cooling water system.

[0018] In one embodiment, in step S3, the mixed gas at the outlet of the carbon black water aeration treatment tank is sent to the CO furnace heat exchanger tube through a pipeline; the mixed gas at room temperature is heated to 190° C. by the CO furnace heat exchanger, and then enters the CO conversion furnace.

[0019] In one embodiment, in step S5, the heat of the catalytic conversion reaction causes the outlet gas temperature of the CO converter to reach about 480°C, and the heat is recovered by the raw natural gas preheater.

[0020] In one embodiment, in step S5, the raw natural gas preheater recovers heat, which correspondingly reduces the fuel natural gas consumption required for heating the raw natural gas of the device by about 870 Nm3 / h.

[0021] In one embodiment, in step S6, the exhaust gas from the top of the raw natural gas preheater enters the shell side of the CO furnace heat exchanger, preheats the mixed gas to be reacted from the carbon black water aeration treatment tank, and then the temperature drops to 96°C before meeting the emission standards.

[0022] Another aspect of the present invention provides a system for preventing blockage of a cracked gas compressor in a natural gas acetylene device, which is applicable to the above-mentioned method for preventing blockage of a cracked gas compressor in a natural gas acetylene device.

[0023] In one embodiment, it includes a cracked gas compressor, a cooling water system for cooling the cracked gas compressor, a carbon black water filter, a carbon black water aeration treatment tank, an aeration fan, a raw natural gas preheater, a CO furnace heat exchanger, a CO converter, a carbon black water circulation pump and a carbon black water cooler;

[0024] The carbon black cooling water outlet of the cooling water system is connected to the carbon black water filter and the carbon black water aeration treatment tank in sequence through a pipeline, the gas outlet of the carbon black water aeration treatment tank is connected to the gas inlet of the tube side of the CO furnace heat exchanger through a pipeline, the gas outlet of the tube side of the CO furnace heat exchanger is connected to the gas inlet of the CO converter, the gas outlet of the CO converter is connected to the raw natural gas preheater through a pipeline, the exhaust port on the top of the raw natural gas preheater is connected to the gas inlet of the shell side of the CO furnace heat exchanger through a pipeline, and the gas outlet of the shell side of the CO furnace heat exchanger is connected to the atmosphere;

[0025] An air filter is provided at the air inlet of the aeration fan, and the air outlet of the aeration fan is connected to the aeration inlet of the carbon black water aeration treatment tank;

[0026] The liquid outlet of the carbon black water aeration treatment tank returns to the cooling water system through the carbon black water circulation pump and the carbon black water cooler;

[0027] The carbon black water filter is connected to the carbon black treatment device.

[0028] In one embodiment, the carbon black water filter has multiple layers of hollow metal sintered filter plates built in, and a carbon scraper is provided on the upper part of each layer of the hollow metal sintered filter plates. The carbon scraper cooperates with the hollow metal sintered filter plates to scrape and remove the carbon black filter cake layer formed on the hollow metal sintered filter plates and send it to the carbon black processing device;

[0029] The carbon scraper is driven by a motor, and the distance between the carbon scraper and the hollow metal sintered filter plate can be adjusted steplessly.

[0030] Specifically, the thickness of the pre-coated filter cake on the filter disc is adjusted according to the actual production operation conditions. The filtered carbon black water enters the collection pipe through the hollow cavity of the hollow metal sintered filter plate and is then sent out of the carbon black water filter.

[0031] In one embodiment, 160 groups of multi-layer annularly distributed high-efficiency aeration nozzles are arranged at the bottom of the carbon black water aeration treatment tank, and the aeration fan is connected to each high-efficiency aeration nozzle through a pipeline.

[0032] The beneficial effects of the present invention are as follows:

[0033] 1. The present invention is reasonably designed and can effectively solve a series of serious problems such as blockage of cracked gas compressor, screw locking, broken shaft, etc. caused by accumulation of carbon black and high-grade acetylene polymer in carbon black cooling water system, and recover heat energy to preheat the raw natural gas required by the device, thereby increasing energy utilization efficiency.

[0034] 2. The implementation of the invention can effectively reduce the maintenance frequency of the cracking gas compressor, avoid compressor damage, extend the annual operation time of the natural gas to acetylene device, reduce the intensity of inspection and maintenance work, achieve full recovery of reaction heat, and reduce the consumption of fuel gas in the natural gas heating furnace.

[0035] 3. The present invention is to add a self-cleaning carbon black filter to the outlet of the carbon black cooling water of the cracking gas compressor. The filter is built with multiple layers of hollow metal sintered filter plates, and a carbon scraper is provided on the upper part of each filter plate. The carbon scraper cooperates with the filter plate to scrape, remove and send out the carbon black filter cake layer formed on the filter plate; the filtered carbon black water enters the collection pipe through the filter plate and is sent out of the filter; a carbon black water aeration treatment tank is added downstream of the self-cleaning carbon black filter, and the carbon black cooling water after the solid carbon black is removed is aerated in the treatment tank using the air sent in by the aeration fan to remove a large amount of high-grade acetylene substances dissolved in the water, thereby reducing the amount of polymer generated in the carbon black cooling water system. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 The present invention is a structural schematic diagram of a method for preventing a cracking gas compressor in a natural gas acetylene device from being blocked. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and technical effects of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0041] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] Example 1

[0043] like Figure 1 As shown, this embodiment provides an aspect of the present invention to provide a method for preventing the blockage of a cracked gas compressor in a natural gas acetylene device, comprising the following steps:

[0044] Step S1, adding a carbon black filter at the carbon black cooling water outlet of the cooling water system of the cracked gas compressor;

[0045] Step S2, a carbon black water aeration treatment tank connected to the carbon black filter is added downstream of the carbon black filter, and the carbon black water aeration treatment tank uses a large amount of air sent by the aeration fan to aerate the carbon black cooling water after the solid carbon black is removed, so as to remove the higher acetylene substances dissolved in the carbon black cooling water, thereby reducing the amount of polymer generated in the carbon black cooling water system;

[0046] Step S3, the mixed gas (air + high-grade acetylene gas + acetylene, etc.) at the outlet of the carbon black water aeration treatment tank is sent to the CO furnace heat exchanger tube through a pipeline; then enters the CO converter to reach the catalytic reaction temperature required for the CO converter reaction;

[0047] Step S4, the mixed gas preheated in the CO furnace heat exchanger is catalytically converted in the CO converter by a platinum-palladium catalyst to convert harmful substances such as higher alkynes in the mixed gas into carbon dioxide and water;

[0048] Step S5: The heat of the catalytic conversion reaction causes the heat of the outlet gas of the CO converter to be recovered by the raw natural gas preheater.

[0049] Step S6, the exhaust gas from the top of the raw natural gas preheater enters the shell side of the CO furnace heat exchanger, and after preheating the mixed gas to be reacted from the carbon black water aeration treatment tank, the temperature is reduced to meet the emission standards;

[0050] Step S7, the carbon black cooling water after filtering and aeration in step S1 and step S2 is pressurized by a carbon black water circulation pump and cooled by a carbon black water cooler, and then is circulated and used by the cracking gas compressor.

[0051] Specifically, this method can effectively solve a series of serious problems such as blockage of cracking gas compressor, screw locking, and broken shaft caused by the accumulation of carbon black and high-grade acetylene polymers in the carbon black cooling water system, and recover heat energy to preheat the raw natural gas required by the device, thereby increasing energy utilization efficiency. The implementation of this method can effectively reduce the maintenance frequency of cracking gas compressors, avoid compressor damage, extend the annual operating time of natural gas to acetylene devices, reduce the intensity of maintenance work, fully recover reaction heat, and reduce the consumption of fuel gas in natural gas heating furnaces.

[0052] Example 2

[0053] This embodiment provides a system for preventing the blockage of the cracked gas compressor in the natural gas acetylene device, which is applicable to the above-mentioned method for preventing the blockage of the cracked gas compressor in the natural gas acetylene device. It includes a cracked gas compressor, a cooling water system for cooling the cracked gas compressor, a carbon black water filter, a carbon black water aeration treatment tank, an aeration fan, a raw natural gas preheater, a CO furnace heat exchanger, a CO converter, a carbon black water circulation pump and a carbon black water cooler;

[0054] The carbon black cooling water outlet of the cooling water system is connected to the carbon black water filter and the carbon black water aeration treatment tank in sequence through a pipeline, the gas outlet of the carbon black water aeration treatment tank is connected to the gas inlet of the tube side of the CO furnace heat exchanger through a pipeline, the gas outlet of the tube side of the CO furnace heat exchanger is connected to the gas inlet of the CO converter, the gas outlet of the CO converter is connected to the raw natural gas preheater through a pipeline, the exhaust port on the top of the raw natural gas preheater is connected to the gas inlet of the shell side of the CO furnace heat exchanger through a pipeline, and the gas outlet of the shell side of the CO furnace heat exchanger is connected to the atmosphere;

[0055] An air filter is provided at the air inlet of the aeration fan, and the air outlet of the aeration fan is connected to the aeration inlet of the carbon black water aeration treatment tank;

[0056] The liquid outlet of the carbon black water aeration treatment tank returns to the cooling water system through the carbon black water circulation pump and the carbon black water cooler;

[0057] The carbon black water filter is connected to the carbon black treatment device.

[0058] The carbon black water filter has multiple layers of hollow metal sintered filter plates built in. A carbon scraper is provided on the upper part of each layer of the hollow metal sintered filter plates. The carbon scraper cooperates with the hollow metal sintered filter plates to scrape and remove the carbon black filter cake layer formed on the hollow metal sintered filter plates and send it to the carbon black processing device.

[0059] The carbon scraper is driven by a motor, and the distance between the carbon scraper and the hollow metal sintered filter plate can be adjusted steplessly.

[0060] Specifically, the thickness of the pre-coated filter cake on the filter disc is adjusted according to the actual production operation conditions. The filtered carbon black water enters the collection pipe through the hollow cavity of the hollow metal sintered filter plate and is then sent out of the carbon black water filter.

[0061] 160 groups of multi-layer annularly distributed high-efficiency aeration nozzles are arranged at the bottom of the carbon black water aeration treatment tank, and the aeration fan is connected to each high-efficiency aeration nozzle through a pipeline.

[0062] Example 3

[0063] This embodiment is further optimized on the basis of embodiment 2, specifically:

[0064] A self-cleaning carbon black filter is added at the carbon black cooling water outlet of the cracking gas compressor. The filter is built with multiple layers of hollow metal sintered filter plates, and a carbon scraper is provided on the upper part of each filter plate. The carbon scraper cooperates with the filter plate to scrape, remove and send out the carbon black filter cake layer formed on the filter plate; the filtered carbon black water passes through the filter plate into the collection pipe and is sent out of the filter; a carbon black water aeration treatment tank is added downstream of the self-cleaning carbon black filter, and the carbon black cooling water after the solid carbon black is removed is aerated in the treatment tank using the air sent in by the aeration fan to remove a large amount of higher acetylene substances dissolved in the water, thereby reducing the amount of polymer generated in the carbon black cooling water system;

[0065] The mixed gas (air + high-grade acetylene gas + acetylene, etc.) at the outlet of the carbon black water aeration treatment tank is sent to the tube side of the CO furnace heat exchanger; the mixed gas at room temperature is heated to 190°C through the heat exchanger to reach the temperature required for the CO converter reaction; the mixed gas preheated in the CO furnace heat exchanger is converted into carbon dioxide and water through catalytic conversion in the CO converter; the heat of the catalytic conversion reaction makes the outlet gas temperature of the CO converter reach about 480°C, and this gas is sent to the raw natural gas preheater of the acetylene unit to recover heat. The fuel natural gas consumption required for heating the raw natural gas of the unit can be reduced accordingly; the exhaust gas from the top of the raw natural gas preheater enters the shell side of the CO furnace heat exchanger, and after preheating the mixed gas to be reacted, the temperature drops to 96°C before it meets the emission standards; the carbon black cooling water after filtration and aeration is pressurized and cooled for circulation by the cracking gas compressor.

Claims

1. A method for preventing clogging of a cracked gas compressor in a natural gas acetylene device, characterized in that: The steps include: Step S1, adding a carbon black filter at the carbon black cooling water outlet of the cooling water system of the cracked gas compressor; Step S2, a carbon black water aeration treatment tank connected to the carbon black filter is added downstream of the carbon black filter, and the carbon black water aeration treatment tank uses a large amount of air sent by the aeration fan to aerate the carbon black cooling water after the solid carbon black is removed; Step S3, the mixed gas at the outlet of the carbon black water aeration treatment tank is sent to the CO furnace heat exchanger tube through a pipeline; then enters the CO converter to reach the catalytic reaction temperature required by the CO converter reaction; Step S4, the mixed gas preheated in the CO furnace heat exchanger is catalytically converted by a platinum-palladium catalyst in a CO converter to convert harmful substances in the mixed gas into carbon dioxide and water; Step S5, the heat of the catalytic conversion reaction causes the heat of the outlet gas of the CO converter to be recovered by the raw natural gas preheater; Step S6, the exhaust gas from the top of the raw natural gas preheater enters the shell side of the CO furnace heat exchanger, and after preheating the mixed gas to be reacted from the carbon black water aeration treatment tank, the temperature is reduced to meet the emission standards; Step S7, the carbon black cooling water after filtering and aeration in step S1 and step S2 is pressurized by a carbon black water circulation pump and cooled by a carbon black water cooler, and then is circulated and used by the cracking gas compressor.

2. A method for preventing blockage of a cracked gas compressor in a natural gas acetylene device according to claim 1, characterized in that: In step S2, 95% of higher acetylene substances dissolved in the carbon black cooling water can be removed, thereby reducing the amount of polymer generated in the carbon black cooling water system.

3. A method for preventing clogging of a cracked gas compressor in a natural gas acetylene device according to claim 2, characterized in that: In step S3, the mixed gas at the outlet of the carbon black water aeration treatment tank is sent to the CO furnace heat exchanger tube through a pipeline; the mixed gas at room temperature is heated to 190° C. by the CO furnace heat exchanger, and then enters the CO conversion furnace.

4. A method for preventing blockage of a cracked gas compressor in a natural gas acetylene device according to claim 2, characterized in that: In step S5, the heat of the catalytic conversion reaction causes the outlet gas temperature of the CO converter to reach 480°C, and this heat is recovered by the raw natural gas preheater.

5. A method for preventing clogging of a cracked gas compressor in a natural gas acetylene device according to claim 4, characterized in that: In step S5, the raw natural gas preheater recovers heat, which correspondingly reduces the fuel natural gas consumption required for heating the raw natural gas of the device by 870Nm 3 / h.

6. A method for preventing blockage of a cracked gas compressor in a natural gas acetylene device according to claim 4, characterized in that: In step S6, the exhaust gas from the top of the raw natural gas preheater enters the shell side of the CO furnace heat exchanger, preheats the mixed gas to be reacted from the carbon black water aeration treatment tank, and then the temperature drops to 96°C before meeting the emission standards.

7. A system for preventing clogging of a cracked gas compressor in a natural gas acetylene plant, characterized in that: A method for preventing blockage of a cracking gas compressor in a natural gas acetylene device applicable to any one of claims 1 to 6.

8. A system for preventing blockage of a cracked gas compressor in a natural gas acetylene device according to claim 7, characterized in that: It includes a cracking gas compressor, a cooling water system for cooling the cracking gas compressor, a carbon black water filter, a carbon black water aeration treatment tank, an aeration fan, a raw natural gas preheater, a CO furnace heat exchanger, a CO converter, a carbon black water circulation pump and a carbon black water cooler; The carbon black cooling water outlet of the cooling water system is connected to the carbon black water filter and the carbon black water aeration treatment tank in sequence through a pipeline, the gas outlet of the carbon black water aeration treatment tank is connected to the gas inlet of the tube side of the CO furnace heat exchanger through a pipeline, the gas outlet of the tube side of the CO furnace heat exchanger is connected to the gas inlet of the CO converter, the gas outlet of the CO converter is connected to the raw natural gas preheater through a pipeline, the exhaust port on the top of the raw natural gas preheater is connected to the gas inlet of the shell side of the CO furnace heat exchanger through a pipeline, and the gas outlet of the shell side of the CO furnace heat exchanger is connected to the atmosphere; An air filter is provided at the air inlet of the aeration fan, and the air outlet of the aeration fan is connected to the aeration inlet of the carbon black water aeration treatment tank; The liquid outlet of the carbon black water aeration treatment tank returns to the cooling water system through the carbon black water circulation pump and the carbon black water cooler; The carbon black water filter is connected to the carbon black treatment device.

9. A system for preventing blockage of a cracked gas compressor in a natural gas acetylene device according to claim 8, characterized in that: The carbon black water filter has multiple layers of hollow metal sintered filter plates built in. A carbon scraper is provided on the upper part of each layer of the hollow metal sintered filter plates. The carbon scraper cooperates with the hollow metal sintered filter plates to scrape and remove the carbon black filter cake layer formed on the hollow metal sintered filter plates and send it to the carbon black processing device. The carbon scraper is driven by a motor, and the distance between the carbon scraper and the hollow metal sintered filter plate can be adjusted steplessly.

10. A system for preventing blockage of a cracked gas compressor in a natural gas acetylene device according to claim 8, characterized in that: 160 groups of multi-layer annularly distributed high-efficiency aeration nozzles are arranged at the bottom of the carbon black water aeration treatment tank, and the aeration fan is connected to each high-efficiency aeration nozzle through a pipeline.

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