CN214880837U - Gasification effluent treatment plant - Google Patents
Gasification effluent treatment plant Download PDFInfo
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- CN214880837U CN214880837U CN202120152686.1U CN202120152686U CN214880837U CN 214880837 U CN214880837 U CN 214880837U CN 202120152686 U CN202120152686 U CN 202120152686U CN 214880837 U CN214880837 U CN 214880837U
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Abstract
The utility model discloses a gasification wastewater treatment device, which comprises a clarification tank and an ash water tank which are connected in sequence, wherein the ash water tank is connected with a first cooler and a second cooler respectively, and the gasification wastewater treatment device also comprises a cooling water circulation mechanism, the cooling water circulation mechanism forms a closed loop with a side inlet of the first cooler and a side outlet of the first cooler, and the cooling water circulation mechanism forms a closed loop with a side inlet of the second cooler and a side outlet of the second cooler; the tube pass outlets of the first cooler and the second cooler are respectively connected with a grey water discharge pipe. The gasified waste water is firstly treated by a clarifying tank to further condense and settle fine slag in the waste water, so as to realize the pretreatment of the waste water; the first cooler and the second cooler are connected in series and in parallel, so that the temperature of wastewater sent to the next-stage treatment system is reduced, and the wastewater treatment capacity is improved; when any one of the first cooler and the second cooler fails, the first cooler and the second cooler can be switched off for maintenance, and normal operation of the system is guaranteed.
Description
Technical Field
The utility model belongs to the technical field of waste water treatment equipment, a gasification effluent treatment plant is related to.
Background
The Texaco gasification process is a technology for converting carbon-containing substances such as natural gas, coal and the like into hydrogen and carbon monoxide, and the generated hydrogen and carbon monoxide are widely applied. The gasification temperature of the Texaco gasification process is 1300-1500 ℃, and the Texaco gasification process has the advantages of high coal conversion rate, only 0.1 percent of methane content in the generated process gas, no tar and phenol water generation, low sewage treatment cost and the like.
After the effluent of the combustion chamber of the Texaco gasifier directly contacts with water for chilling and cooling, the molten slag is rapidly solidified; meanwhile, the process gas enters a post-system after being washed by water to remove residual fly ash; after black water discharged from a chilling chamber of the gasification furnace and the carbon washing tower is settled through a clarifying tank, ash water overflowing from the upper part of the clarifying tank is used as wastewater to enter an ash water tank, and the wastewater at the bottom of the ash water tank is cooled by a cooler and then is sent to a sewage treatment device.
As the waste water cooler of the gasification section is not provided with a standby heat exchanger, once the heat exchanger is blocked or leaked, waste water cannot be conveyed, so that the device is forced to stop; because the original design of the gasification furnace device is one-open one-standby and is changed into two-open one-standby, and the original design waste water amount is about 1.5 times of the existing waste water amount, the original waste water cooler cannot meet the waste water treatment requirement, the long-period stable operation of the system is seriously influenced, and the gasification furnace device becomes a hidden danger.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a gasification effluent treatment plant has solved the low problem of waste water treatment volume that exists among the prior art.
The utility model adopts the technical scheme that the gasification wastewater treatment device comprises a clarifying tank, an ash water tank and a cooling water circulation mechanism, wherein the clarifying tank and the ash water tank are sequentially connected, the ash water tank is respectively connected with a first cooler and a second cooler, the cooling water circulation mechanism forms a closed loop with a side inlet of the first cooler and a side outlet of the first cooler, and the cooling water circulation mechanism forms a closed loop with a side inlet of the second cooler and a side outlet of the second cooler; the tube pass outlets of the first cooler and the second cooler are respectively connected with a grey water discharge pipe.
The utility model discloses a characteristics still lie in:
the grey water tank is communicated with a first cooler tube pass inlet and a second cooler tube pass inlet through a first pipeline and a second pipeline respectively, and the first pipeline and the second pipeline are provided with a first valve and a second valve respectively; the cooling water circulation mechanism is communicated with an inlet on the side of the first cooler shell through a third pipeline, the third pipeline is communicated with an inlet on the side of the second cooler shell through a fourth pipeline, a third valve and a fourth valve are respectively arranged on the third pipeline and the fourth pipeline, an outlet on the side of the first cooler shell is communicated with the cooling water circulation mechanism through a fifth pipeline, and an outlet on the side of the second cooler shell is communicated with the fifth pipeline through a sixth pipeline.
The third pipeline is communicated with the fifth pipeline through a seventh pipeline, and the seventh pipeline is provided with a seventh valve.
The clarifying tank comprises a tank body, a raking machine is arranged in the tank body, an overflow weir is arranged at the upper part of the tank body, and an overflow trough is arranged at the bottom of the overflow weir.
The overflow weir is connected with an eighth pipeline for conveying the dispersing agent.
The utility model has the advantages that:
the utility model relates to a gasification wastewater treatment device, which leads gasification wastewater to further condense and settle fine slag in the wastewater through a clarifying tank, leads ash water to enter an ash water tank through an overflow weir and an overflow tank, can remove slag in black water, and realizes the pretreatment of wastewater; the first cooler and the second cooler are connected in series and in parallel, so that the temperature of wastewater sent to a next-stage treatment system is reduced, the safe operation of a wastewater treatment device is ensured, the shutdown of the whole production system caused by the fact that the wastewater cannot be discharged due to overhigh temperature is prevented, and the wastewater treatment capacity is improved; when any one of the first cooler and the second cooler fails, the first cooler and the second cooler can be switched off for maintenance, and normal operation of the system is guaranteed.
Drawings
FIG. 1 is a schematic structural view of a gasification wastewater treatment device of the present invention.
In the figure: 1. the device comprises a clarifying tank, 101, a tank body, 102, an overflow weir, 103, a raking machine, 104, an overflow tank, 2, an ash water tank, 3, a first cooler, 4, a second cooler, 5, a first pipeline, 6, a second pipeline, 7, a first valve, 8, a second valve, 9, a third pipeline, 10, a fourth pipeline, 11, a third valve, 12, a fourth valve, 13, a fifth pipeline, 14, a sixth pipeline, 15, a fifth valve, 16, a sixth valve, 17, a seventh pipeline, 18, a seventh valve and 19, and an eighth pipeline.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
A gasification wastewater treatment device comprises a clarifying tank 1 and an ash water tank 2 which are sequentially connected, wherein the ash water tank 2 is respectively connected with a first cooler 3 and a second cooler 4, and the gasification wastewater treatment device also comprises a cooling water circulation mechanism, the cooling water circulation mechanism forms a closed loop with a shell side inlet of the first cooler 3 and a shell side outlet of the first cooler 3, and the cooling water circulation mechanism forms a closed loop with a shell side inlet of the second cooler 4 and a shell side outlet of the second cooler 4; the tube pass outlets of the first cooler 3 and the second cooler 4 are respectively connected with a grey water discharge pipe. The grey water discharge pipe is connected with the next-stage treatment system to carry out the next-stage treatment of the grey water.
The ash water tank 2 is respectively communicated with a pipe pass inlet of the first cooler 3 and a pipe pass inlet of the second cooler 4 through a first pipeline 5 and a second pipeline 6, and the first pipeline 5 and the second pipeline 6 are respectively provided with a first valve 7 and a second valve 8; the cooling water circulation mechanism is communicated with a shell side inlet of the first cooler 3 through a third pipeline 9, the third pipeline 9 is communicated with a shell side inlet of the second cooler 4 through a fourth pipeline 10, a third valve 11 and a fourth valve 12 are respectively arranged on the third pipeline 9 and the fourth pipeline 10, a shell side outlet of the first cooler 3 is communicated with the cooling water circulation mechanism through a fifth pipeline 13, a shell side outlet of the second cooler 4 is communicated with the fifth pipeline 13 through a sixth pipeline 14, and the fifth pipeline 13 and the sixth pipeline 14 are respectively provided with a fifth valve 15 and a sixth valve 16.
The third line 9 communicates with the fifth line 13 via a seventh line 17, which seventh line 17 is provided with a seventh valve 18. When the cooling water circulation mechanism can not normally provide cooling water, the first valve 7, the second valve 8, the fourth valve 12, the sixth valve 16 and the fifth valve 15 are closed, the seventh valve 18 is opened, and the cooling water circulation mechanism and the seventh pipeline 17 form a closed loop.
The clarifying tank 1 comprises a tank body 101, a raking machine 103 is arranged in the tank body 101, an overflow weir 102 is arranged at the upper part of the tank body 101, and an overflow trough 104 is arranged at the bottom of the overflow weir 102. The flocculating agent is added into the tank body to ensure that the grey water overflowing from the top is cleaner, and the raking machine 103 can prevent settling fine slag from accumulating at the bottom to block the bottom discharge hole. The overflow weir 102 is connected with an eighth pipeline 19 for delivering a dispersing agent, and the addition of the dispersing agent into the clarifying tank 1 can prevent fine ash in the grey water from being condensed again, so that the inner wall of the equipment is scaled and the pipeline is blocked.
The utility model relates to a gasification effluent treatment plant's working process as follows:
black water discharged from a chilling chamber of the gasification furnace and the carbon washing tower is sent to a clarifying tank 1, a flocculating agent is added into the clarifying tank 1 at the same time, fine slag in the black water is further coagulated and settled by stirring of a raking machine 102, and overflowing grey water enters an overflow weir 102, then flows into an overflow groove 104 and enters a grey water groove 2; when the load of the device is high or the outdoor temperature is high in summer or the device is in high summer, the grey water in the grey water tank 2 enters the tube passes of the first cooler 3 and the second cooler 4 through the first pipeline 5 and the second pipeline 6 respectively, the cooling water in the cooling water circulating mechanism enters the shell sides of the first cooler 3 and the second cooler 4 through the third pipeline 9 and the fourth pipeline 10 respectively to cool the grey water, and the discharged cooling water returns to the cooling water circulating mechanism through the fifth pipeline 13 and the sixth pipeline 14; and the cooled grey water is discharged from grey water discharge pipes of the first cooler 3 and the second cooler 4 and enters a next-stage treatment system.
If the first cooler 3 is in fault and needs to be overhauled, the first valve 7 and the third valve 11 are closed, the grey water in the grey water tank 2 enters the tube pass of the second cooler 4 through the second pipeline 6, the cooling water in the cooling water circulation mechanism enters the shell side of the second cooler 4 through the fourth pipeline 10 to cool the grey water, and the discharged cooling water returns to the cooling water circulation mechanism through the sixth pipeline 14; if the second cooler 4 is in fault and needs to be overhauled, the second valve 8 and the fourth valve 12 are closed, the grey water in the grey water tank 2 enters the tube pass of the first cooler 3 through the first pipeline 5, the cooling water in the cooling water circulation mechanism enters the shell side of the first cooler 3 through the third pipeline 9 to cool the grey water, and the discharged cooling water returns to the cooling water circulation mechanism through the fifth pipeline 13.
Through the mode, the gasification wastewater treatment device of the utility model enables gasification wastewater to further condense and settle fine slag in the wastewater through the clarifying tank, and enables ash water to enter the ash water tank through the overflow weir and the overflow groove, so that the slag in the black water can be removed, and the pretreatment of the wastewater is realized; the first cooler and the second cooler are connected in series and in parallel, so that the temperature of wastewater sent to a next-stage treatment system is reduced, the safe operation of a wastewater treatment device is ensured, the shutdown of the whole production system caused by the fact that the wastewater cannot be discharged due to overhigh temperature is prevented, and the wastewater treatment capacity is improved; when any one of the first cooler and the second cooler fails, the first cooler and the second cooler can be switched off for maintenance, and normal operation of the system is guaranteed.
Claims (5)
1. The gasification wastewater treatment device is characterized by comprising a clarifying tank (1) and an ash water tank (2) which are sequentially connected, wherein the ash water tank (2) is respectively connected with a first cooler (3) and a second cooler (4), and the gasification wastewater treatment device also comprises a cooling water circulation mechanism, wherein the cooling water circulation mechanism forms a closed loop with a shell side inlet of the first cooler (3) and a shell side outlet of the first cooler (3), and forms a closed loop with a shell side inlet of the second cooler (4) and a shell side outlet of the second cooler (4); and tube pass outlets of the first cooler (3) and the second cooler (4) are respectively connected with a grey water discharge pipe.
2. The gasification wastewater treatment device according to claim 1, wherein the grey water tank (2) is communicated with a tube side inlet of the first cooler (3) and a tube side inlet of the second cooler (4) through a first pipeline (5) and a second pipeline (6), and the first pipeline (5) and the second pipeline (6) are respectively provided with a first valve (7) and a second valve (8); the cooling water circulation mechanism is communicated with a shell side inlet of the first cooler (3) through a third pipeline (9), the third pipeline (9) is communicated with a shell side inlet of the second cooler (4) through a fourth pipeline (10), a third valve (11) and a fourth valve (12) are respectively arranged on the third pipeline (9) and the fourth pipeline (10), a shell side outlet of the first cooler (3) is communicated with the cooling water circulation mechanism through a fifth pipeline (13), and a shell side outlet of the second cooler (4) is communicated with the fifth pipeline (13) through a sixth pipeline (14).
3. A gasification waste water treatment plant according to claim 2, characterized in that the third line (9) communicates with the fifth line (13) via a seventh line (17), the seventh line (17) being provided with a seventh valve (18).
4. The gasification wastewater treatment device according to claim 1, wherein the clarification tank (1) comprises a tank body (101), a raker (103) is arranged in the tank body (101), an overflow weir (102) is arranged at the upper part of the tank body (101), and an overflow trough (104) is arranged at the bottom of the overflow weir (102).
5. A gasification wastewater treatment plant according to claim 4, characterized in that an eighth line (19) for transporting a dispersant is connected to the overflow weir (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120152686.1U CN214880837U (en) | 2021-01-20 | 2021-01-20 | Gasification effluent treatment plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120152686.1U CN214880837U (en) | 2021-01-20 | 2021-01-20 | Gasification effluent treatment plant |
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| Publication Number | Publication Date |
|---|---|
| CN214880837U true CN214880837U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120152686.1U Active CN214880837U (en) | 2021-01-20 | 2021-01-20 | Gasification effluent treatment plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214880837U (en) |
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2021
- 2021-01-20 CN CN202120152686.1U patent/CN214880837U/en active Active
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