CN220223877U - High-pressure black water treatment system - Google Patents
High-pressure black water treatment system Download PDFInfo
- Publication number
- CN220223877U CN220223877U CN202321312050.4U CN202321312050U CN220223877U CN 220223877 U CN220223877 U CN 220223877U CN 202321312050 U CN202321312050 U CN 202321312050U CN 220223877 U CN220223877 U CN 220223877U
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- chilled water
- water treatment
- water
- treatment device
- filter
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- 239000010866 blackwater Substances 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 117
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 19
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 19
- 238000005273 aeration Methods 0.000 claims abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000002309 gasification Methods 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 description 7
- 239000010865 sewage Substances 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The utility model discloses a high-pressure black water treatment system which comprises a synthetic gas washing tower, a chilled water pump, a chilled water treatment device and a chilled water filter which are sequentially connected, wherein the upper end of the chilled water filter is connected with a gasifier chilling chamber, and the lower end of the chilled water filter is connected with a flash tank; the chilling water treatment device is provided with a carbon dioxide injection channel, and an aeration head is arranged in the chilling water treatment device, so that the PH of chilling water can be effectively reduced by introducing carbon dioxide into high-pressure black water, and the scaling risk is eliminated. The system can improve the service cycle of the filter on the premise of safe operation, and avoid the risk of frequent scaling and blockage and less circulating water entering the gasification furnace. The filter effect is improved, the washing distribution in the gasifier is also improved, the blockage is not easy to occur, and the gasifier is safer to operate.
Description
Technical Field
The utility model belongs to the field of coal gasification, and particularly relates to a high-pressure black water treatment system.
Background
The existing coal gasification technology is a source of raw gas supply of chemical enterprises, is a foundation of various process industries, and the domestic dry powder coal gasification technology is operated at high temperature and high pressure, the ash water treatment is mostly carried out in a mode of step-by-step flash evaporation cooling, washing and sedimentation, the solid content of black water entering internal parts such as a chilling ring, a downpipe and the like of the gasifier is high in the cyclic flash evaporation and concentration process, the blockage is easy to cause, accidents are caused in severe cases, and the operation quality of a water chilling system influences the long-period stable operation of the system.
The ash water of the washing tower is used as a source of quenching water, and the ash water is pressurized by a quenching water pump to provide quenching water with the pressure of 4.8MPa and the temperature of 200 ℃ for a quenching chamber of the gasifier; and filtered through a chilled water filter.
The following problems exist in the operation process of the current water chilling system:
1. due to the restriction of the prior art, the chilling water filter is inevitably blocked frequently and scaled, and can only be discharged to the normal-pressure pollution discharge tank after being stopped in actual operation, and can not be discharged during normal operation.
2. The black water has high solid content, is easy to accumulate at the bottom of the filter to cause blockage, is difficult to clean, has high risk and is easy to cause scalding accidents.
3. The serious blockage causes poor chilling effect of the gasifier and flow reduction of the water chilling system, so that long-period stable operation of the system is not ensured.
Disclosure of Invention
The utility model aims to improve the service cycle of a filter on the premise of safe operation and avoid the risk of small circulating water quantity entering a gasification furnace caused by frequent scaling and blockage. The filter effect is improved, the washing distribution in the gasifier is also improved, the blockage is not easy to occur, and the gasifier is safer to operate.
The utility model adopts the scheme for solving the technical problems that:
the high-pressure black water treatment system comprises a synthetic gas washing tower, a chilled water pump, a chilled water treatment device and a chilled water filter which are sequentially connected, wherein the upper end of the chilled water filter is connected with a gasifier chilling chamber, and the lower end of the chilled water filter is connected with a flash tank; the chilling water treatment device is provided with a carbon dioxide injection channel, and an aeration head is arranged in the chilling water treatment device, so that the PH of chilling water can be effectively reduced by introducing carbon dioxide into high-pressure black water, and the scaling risk is eliminated.
Preferably, an aeration center channel is arranged in the chilling water treatment device, a baffle is arranged at the top of the aeration center channel, and a plurality of aeration heads are arranged around the aeration center channel.
Preferably, the carbon dioxide injection channel is led into the chilled water treatment device from the side surface of the chilled water treatment device along the horizontal direction.
Preferably, the water inlet of the chilled water treatment device is provided with a water inlet and outlet electric valve, a black water auxiliary channel is arranged outside the chilled water treatment device between the water inlet and the water outlet of the chilled water treatment device, and the black water auxiliary channel is provided with a cut-off valve.
Preferably, the chilling water filter and the high-pressure flash tank are both connected with the chilling water filter through a blow-down pipe, and the blow-down pipe is provided with a regulating valve.
Preferably, a pressure display device is arranged on the drain pipe.
As a preferable technical scheme of the utility model, the chilled water filter is provided with inlet and outlet water pressure difference, outlet pressure display, real-time monitoring, gasification furnace pollution discharge set pressure point real-time monitoring, and the pressure of the chilled water filter is 4.8MPa, and the gasification furnace pollution discharge pipeline is 3.8MPa.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model can realize the preliminary filtration of chilled water by arranging the black water filter, optimize the water chilling flow of the gasification furnace system, and realize the switching cleaning of the primary filtration, and has the PH regulating function. The PH of the chilled water can be effectively reduced and the scaling risk is eliminated by introducing carbon dioxide into the high-pressure black water.
2. According to the utility model, by arranging the sewage drain pipeline of the original chilled water filter and the regulating valve, on one hand, the sewage drain at the bottom of the chilled water filter in the running process of the gasification furnace system can be realized, and on the other hand, the sufficient filtering space of the chilled water filter is thoroughly realized.
3. According to the utility model, through setting the pressure display of the chilled water filter, the monitoring of the distribution pressure of the chilled water can be ensured, and the pollution discharge of the chilled water filter can be ensured not to cause pressure stringing.
4. The chilled water filter provided by the utility model is connected to the high-pressure flash tank through the sewage pipeline, so that the sewage heat and the water quality are concentrated and recovered, and the clean treatment of black water is realized.
5. After the PH of the black water is regulated by the chilled water treatment device, the PH and the solid content of the water quality are reduced after online pollution discharge is realized by the chilled water filter, the running period of the system is prolonged, and the pollution discharge is directly discharged to the internal flash evaporation system of the circulating water system, so that the safety operation risk is avoided.
Drawings
FIG. 1 is a diagram of the overall structure of the present utility model;
FIG. 2 is a schematic view of the inside of a chilled water treatment device;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
in the figure: 1 is a gasification furnace, 2 is a synthetic gas washing tower. 3 is a chilled water treatment device, 4 is a chilled water filter, 5 is a high-pressure flash tank, 6 is a chilled water pump, 7 is a cut-off valve, 8 is a carbon dioxide injection channel, 9 and a baffle, 10 and an aeration central channel, 11 and an aeration head, 12 and a baffle.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
The utility model is further described below in conjunction with the drawings and examples to facilitate understanding by those skilled in the art:
embodiment one:
as shown in fig. 1, the present utility model discloses a treatment device for high-pressure chilled water, comprising: the gasification furnace 1, the synthetic gas washing tower 2, the chilled water treatment device 3, the chilled water filter 4, the high-pressure flash tank 5, the chilled water pump 6, the black water auxiliary channel, the cut-off valve 7 and the carbon dioxide channel 8.
The chilled water treatment device 3 is used as a primary filtering and PH regulating device, an electric water inlet and outlet valve is arranged at the water inlet, a black water auxiliary channel is arranged between the water inlet and the water outlet and at the outer side of the chilled water treatment device 3, a cut-off valve 7 is arranged on the black water auxiliary channel, and a carbon dioxide injection channel 8 in the horizontal direction is arranged at the side surface of the chilled water treatment device 3, so that the switching of the chilled water treatment device can be realized, and a water chilling system can keep long-time cleaning and filtering effects.
Black water at the bottom of the synthetic gas washing tower 2 is pressurized by a chilling water pump 6 and then enters a chilling water treatment device 3, the PH is regulated by combining carbon dioxide aeration with chilling water, secondary filtration is carried out by a chilling water filter 4, chilling water at the outlet of the chilling water filter 4 enters a gasification furnace 1 for chilling and cooling, and the pollution discharge of the chilling water filter 4 and the pollution discharge of the gasification furnace 1 are discharged to a high-pressure flash tank 5 for flash evaporation and cooling after being subjected to temperature and pressure reduction by a regulating valve.
As shown in fig. 2-3, a high-pressure carbon dioxide aeration head 11 is arranged in the chilled water treatment device, the carbon dioxide aeration head 11 is arranged above the carbon dioxide channel 8, carbon dioxide enters the aeration center channel 10 after being introduced into the chilled water treatment device, and under the limitation of a baffle 12, the carbon dioxide is dispersed in a plurality of carbon dioxide aeration heads around, so that the carbon dioxide is uniformly distributed and fully mixed with chilled water, and the PH of the chilled water treatment device is adjusted to ensure that no scale is formed.
And a black water auxiliary channel is arranged outside the chilled water treatment device between the water inlet and the water outlet, and a cut-off valve 7 is arranged in the black water auxiliary channel. When the device is particularly used, when the chilled water treatment device 3 is blocked, the cut-off valve 7 of the black water auxiliary channel of the chilled water treatment device can be opened to temporarily cut off the chilled water channel and switch the chilled water treatment device.
The chilling water filter is used as secondary filtration, the blow-off pipe regulating valve is arranged on the chilling water blow-off pipe, and the tail end of the pipe line is connected between the gasification sewage discharging pipe and the blow-off cut-off valve, so that the pressure is prevented from being generated.
The chilling water filter blow-down pipe regulating valve is vertically arranged on the chilling water blow-down pipe, and the tail end of the pipeline is connected between the gasification furnace blow-down pipeline and the blow-down cut-off valve, so that the pressure is prevented from being generated.
The pressure display device is arranged at the outlet of the chilling water filter 4 and the external discharge pipeline of the gasification furnace, so that the monitoring of the distribution pressure of chilling water can be ensured, and the pollution discharge of the chilling water filter can be ensured not to cause pressure stringing.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (6)
1. The high-pressure black water treatment system is characterized by comprising a synthetic gas washing tower, a chilled water pump, a chilled water treatment device and a chilled water filter which are sequentially connected, wherein the upper end of the chilled water filter is connected with a gasifier chilling chamber, and the lower end of the chilled water filter is connected with a flash tank; the chilled water treatment device is provided with a carbon dioxide injection channel, and an aeration head is arranged inside the chilled water treatment device.
2. The high pressure black water treatment system according to claim 1, wherein an aeration central passage is provided in the chilled water treatment device, a baffle is provided at the top of the aeration central passage, and a plurality of aeration heads are provided around the aeration central passage.
3. A high pressure black water treating system according to claim 1, wherein the carbon dioxide injection channel opens into the chilled water treating apparatus from the side thereof in a horizontal direction.
4. The high-pressure black water treatment system according to claim 1, wherein the water inlet of the chilled water treatment device is provided with a water inlet and outlet electric valve, the outer part of the chilled water treatment device is provided with a black water auxiliary channel between the water inlet and the water outlet, and the black water auxiliary channel is provided with a cut-off valve.
5. The high pressure black water treatment system according to claim 1, wherein the chilled water filter and the high pressure flash tank are both connected to the chilled water filter through a drain pipe, and the drain pipe is provided with a regulating valve.
6. The high pressure black water treating system according to claim 5, wherein the drain pipe is provided with a pressure display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321312050.4U CN220223877U (en) | 2023-05-29 | 2023-05-29 | High-pressure black water treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321312050.4U CN220223877U (en) | 2023-05-29 | 2023-05-29 | High-pressure black water treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220223877U true CN220223877U (en) | 2023-12-22 |
Family
ID=89183008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321312050.4U Active CN220223877U (en) | 2023-05-29 | 2023-05-29 | High-pressure black water treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220223877U (en) |
-
2023
- 2023-05-29 CN CN202321312050.4U patent/CN220223877U/en active Active
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