A gasification inverted filter cartridge quench water filter

Abstract

The utility model discloses a kind of gasification inverted filter cartridge quenching water filters, including filter cartridge and inverted filter cartridge;The circumferential left and right sides of the filter cartridge are respectively provided with filter inlet and filter outlet communicated with its inside, the filter inlet and the filter outlet are respectively communicated with the inlet and outlet of the inverted filter cartridge;The inverted filter cartridge is coaxially arranged in the filter cartridge inside, the lower end of the inverted filter cartridge is obliquely arranged from the upper side of the filter inlet to the lower side of filter outlet, so that the inverted filter cartridge is chamfered cylindrical shape.The advantage is: filter medium flow is optimized, filter cartridge is installed upside down, medium flows from inside to outside, dirt is directly discharged when backwashing, avoid accumulation, backwashing efficiency is improved, reduce manual operation frequency and intensity.

Description

Technical Field

[0001] This utility model relates to the technical field of coal gasification equipment, and in particular to a gasification inverted filter cartridge quench water filter. Background Technology

[0002] The gasifier employs a quench process. Water-coal slurry and oxygen are injected into the gasifier through process burners and atomized. The crude syngas produced by the gasification reaction is a mixture of CO2, H2, CO, CH4, and water vapor. Unconverted components in the coal react with coal ash to form ash. The crude syngas and ash flow downwards together, passing through the water distribution ring in the quench chamber and entering the quench chamber water bath along the cooling pipes. After most of the ash cools, it falls to the bottom of the quench chamber. The crude syngas then passes through a distributor and is washed by multiple layers of transverse separators to break bubbles before exiting the quench chamber for preliminary coal gas purification.

[0003] The black water circulation pump draws upper black water from the bottom of the scrubbing tower, which is then filtered by a quench water filter to remove large particles that could clog the quench ring. The quench water (350m³) 3 The quench water (at a pressure of 240℃ and 7.05MPa) is fed into the quench water distribution ring located at the top of the quench chamber. The quench water enters the quench chamber in two ways: 1. It is sprayed out at a certain angle to the downcomer, impacting the gas. 2. It is sprayed along the wall of the washing and cooling pipes, protecting them.

[0004] To prevent quench ring blockage, each gasifier system is equipped with two quench water filters (one in operation and one on standby). When the pressure difference across the quench water filter increases and the quench water flow cannot meet the process requirements, the quench water filter must be switched to the standby filter to backwash the previously blocked filter. Because the quench water is ash water from the gasification system (prone to scaling and containing fine ash), fine ash and scale easily accumulate in the middle of the filter cartridge, leading to filter element blockage and reduced quench water flow. Although the quench water filter is configured with one in operation and one on standby, valve scaling and a high pressure difference across the valves prevent it from being switched off for maintenance. Furthermore, the backwashing water volume is relatively small, resulting in poor backwashing effectiveness. When both quench water filters are blocked, the quench water flow cannot meet the process requirements, forcing premature shutdown of the gasifier. Utility Model Content

[0005] The purpose of this invention is to provide a vaporization inverted filter cartridge chiller water filter, thereby solving the aforementioned problems existing in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A vaporization inverted cartridge chilled water filter includes a filter body and an inverted cartridge. The filter body has a filter inlet and a filter outlet communicating with its interior on its left and right sides, respectively. The inverted cartridge is coaxially disposed inside the filter body, and its lower end is inclined from the upper side of the filter inlet to the lower side of the filter outlet, making the inverted cartridge a slanted cylindrical shape.

[0008] Preferably, the size of the filter outlet is adapted to the size of the quench ring.

[0009] Preferably, the lower end of the inverted filter is provided with a drain port, and the lower end of the filter cylinder is provided with a drain pipe communicating with its interior.

[0010] The beneficial effects of this utility model are: 1. Maintaining the unchanged pressure-bearing body of the filter, adopting an inverted filter cartridge optimizes the internal structure, and the overall filter cartridge installation eliminates the need to modify the main body, saving replacement costs. 2. The inverted filter cartridge improves the operational reliability of the quench water filter. The filter cartridge opening size is adapted to the requirements of the quench ring, reducing flow resistance and minimizing unplanned furnace shutdowns caused by filter blockage, which is beneficial for the long-term stable operation of the gasifier. 3. The filter medium flow direction is optimized. With the filter cartridge installed inverted, the medium flows from the inside to the outside, allowing impurities to be directly discharged during backwashing, avoiding accumulation, improving backwashing efficiency, and reducing the frequency and intensity of manual operation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of an existing quench water filter;

[0012] Figure 2 This is a schematic diagram of the structure of the inverted filter cartridge chilled water filter in this embodiment of the present invention.

[0013] In the diagram: 1-Quick water filter inlet; 2-Filter outlet; 3-Filter body; 4-Filter head; 5-Drainage guide; 6-Connecting flange; 7-Filter cartridge assembly; 8-Inverted filter cartridge. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0015] In this embodiment, a vaporization inverted filter cartridge 8 chilled water filter is provided, including a filter body 3 and an inverted filter cartridge 8; the filter body 3 has a filter inlet 1 and a filter outlet 2 communicating with its interior on its left and right sides respectively; the inverted filter cartridge 8 is coaxially disposed inside the filter body 3, and the lower end of the inverted filter cartridge 8 is inclined from the upper side of the filter inlet 1 to the lower side of the filter outlet 2, so that the inverted filter cartridge 8 is obliquely shaped cylinder.

[0016] In this embodiment, the size of the filter outlet 2 is adapted to the size of the quench ring. The opening size of the filter cartridge is optimized based on the quench ring gap to ensure filtration accuracy while preventing the filtered quench water from clogging the quench ring. This expands the flow area, reduces the risk of clogging, balances filtration effect and flow capacity, and extends the gasifier's operating time.

[0017] In this embodiment, the lower end of the filter cylinder 3 is provided with a sewage drain pipe 5 that communicates with its interior.

[0018] like Figure 1 As shown, the existing quench water filter's processing procedure is as follows: When the quench water filter is working normally, black water from the black water circulation pump enters the quench water filter through filter inlet 1 after passing through the FV1308 flow regulating valve. It passes through the filter cartridge assembly 7 from the outside in, filtering out large particles that may clog the quench ring. The water then flows out through filter outlet 2 and enters the gasifier quench chamber for use as quench water. However, with prolonged operation, large particles accumulate in the gaps of the filter cartridge assembly 7, affecting the filter's flow efficiency. When the operating quench water filter becomes clogged, the quench water flow rate cannot meet the gasifier's operating requirements, necessitating filter flushing. At this time, the inlet and outlet valves of the standby filter are opened, the inlet valve of the operating filter is closed, the FV1308 valve is opened to increase the quench water flow rate, and the drain pipe 5 is opened to backwash the quench water filter. During flushing, the quench water still flows from the outside in through the filter cartridge assembly 7, resulting in an insignificant flushing effect. After flushing, the drain pipe 5 is closed, the inlet valve of the original operating filter is opened, and the inlet and outlet valves of the standby filter are closed. When the system is shut down and the quench water filter is inspected and cleaned, open the connecting flange 6 on the quench water filter, remove the filter head 4, take out the filter cartridge assembly 7 for cleaning and replacement, and perform high-pressure cleaning on the inside of the filter cartridge 3. Reassemble after the inspection is completed.

[0019] like Figure 2As shown, the processing procedure of the inverted filter cartridge 8 quench water filter is as follows: The lower part of the inverted filter cartridge 8 is a slanted cylindrical shape. The shorter end is installed on the upper side of the filter inlet 1, and the longer end is installed on the lower side of the filter outlet 2. Quenching water enters the inverted filter cartridge 8 quench water filter, first flowing into the interior of the inverted filter cartridge 8, and then flowing out after filtration. The medium changes to flow from the inside to the outside, and the filtered large particles no longer clog the gaps between the outer walls of the filter cartridge assembly 7. Combined with the inverted installation, during backwashing, the medium flows from the outside to the inside wall, and large particles fall off the inner wall of the filter and are discharged through the bottom drain pipe 5, optimizing the backwashing process and improving the rinsing efficiency.

[0020] By adopting the above-disclosed technical solution of this utility model, the following beneficial effects are obtained:

[0021] This invention provides a gasification inverted cartridge quench water filter. Maintaining the filter's pressure-bearing body unchanged, it employs an inverted cartridge design, optimizing the internal structure and allowing for integral cartridge installation without altering the main body, thus saving replacement costs. The inverted cartridge quench water filter improves operational reliability. The cartridge opening size is adapted to the quench ring requirements, reducing flow resistance and minimizing unplanned furnace shutdowns due to filter clogging, which is beneficial for the long-term stable operation of the gasifier. The optimized filter media flow direction, with the inverted cartridge installation allowing the media to flow from the inside out, ensures direct discharge of impurities during backwashing, preventing accumulation and improving backwashing efficiency while reducing the frequency and intensity of manual operation.

[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A vaporization inverted cartridge chiller water filter, characterized in that: The filter includes a filter body and an inverted filter cartridge. The filter body has a filter inlet and a filter outlet on its left and right sides, respectively, which communicate with the interior of the filter body. The inverted filter cartridge is coaxially disposed inside the filter body, and the lower end of the inverted filter cartridge is inclined from the upper side of the filter inlet to the lower side of the filter outlet, so that the inverted filter cartridge is a slanted cylindrical shape.

2. The vaporization inverted filter cartridge chiller water filter according to claim 1, characterized in that: The size of the filter outlet is adapted to the size of the quench ring.

3. The vaporization inverted cartridge chiller water filter according to claim 1, characterized in that: The lower end of the filter cylinder is provided with a sewage drain pipe that communicates with its interior.

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