Gasification grey water high-flash gas recovery device
By designing a high flash gas recovery device for gasified ash water, the high flash gas from gasified ash water is condensed using a condenser and boiler and then co-fired with by-product steam, solving the problem of unused high flash gas from gasified ash water and achieving effective resource recovery and environmental benefits.
Patent Information
- Application Number
- CN202520496593.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-20
AI Technical Summary
In existing technologies, the high flash gas in gasified ash water contains a large amount of combustible gas that cannot be effectively utilized, resulting in resource waste and increased environmental pressure.
A high flash gas recovery device for gasified ash water was designed. After condensation treatment by first and second condensers, the high flash gas of gasified ash water is sent to the boiler for co-firing of by-product steam. The device is equipped with a pressure regulator, safety discharge pipeline and heat tracing cable to ensure safe operation.
It effectively recovers combustible gas from gasification ash water and high flash gas, reduces natural gas consumption in the flare, reduces waste gas release, and lowers environmental pressure.
Smart Images
Figure CN223915030U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to high flash recovery technical field, it is a kind of gasification ash water high flash recovery device. BACKGROUND
[0002] Coal gasification device's gasification furnace and scrubbing tower in coal chemical industry discharge black water containing a certain amount of synthesis gas, the gas that black water is flashed out in high-pressure flash tank is called gasification ash water high flash gas, gasification ash water high flash gas contains a large amount of effective gas CO, H2 and H2S etc., and the proportion is ≥44%.The whereabouts of gasification ash water high flash gas is directly sent to flare for combustion, but due to a certain amount of combustible gas in high flash gas, combustible gas is not effectively utilized, which has a greater impact on environmental protection, causes the waste of resources, and increases the consumption of flare fuel natural gas. SUMMARY
[0003] The utility model provides a kind of gasification ash water high flash recovery device, overcome the above prior art, it can effectively solve the problem that the combustible gas of existing gasification ash water high flash gas direct discharge cannot be effectively utilized.
[0004] The technical scheme of the utility model is realized by the following measures: a kind of gasification ash water high flash recovery device, including first condenser, second condenser, flare and boiler, first condenser outlet and flare inlet are fixedly connected with first processing pipeline, second condenser outlet and first processing pipeline are fixedly connected with second processing pipeline, second processing pipeline and boiler inlet are fixedly connected with third processing pipeline, first condenser and second processing pipeline between first processing pipeline and third processing pipeline between fixedly connected with fourth processing pipeline, second processing pipeline and flare between first processing pipeline and third processing pipeline between fixedly connected with go flare pipeline.
[0005] The following is further optimization or / and improvement to the above-mentioned utility model technical scheme:
[0006] The third processing pipeline and fourth processing pipeline are both coiled with heating tape, and the outer side of the heating tape is provided with a thermal insulation layer, and the thermal insulation layer is made of rock wool, aluminum silicate fiber blanket or aluminum skin.
[0007] First pressure regulator is fixedly installed on the first processing pipeline between the first condenser and the fourth processing pipeline, and second pressure regulator is fixedly installed on the second processing pipeline between the second condenser and the third processing pipeline.
[0008] First safety discharge pipeline is fixedly connected between the first processing pipeline between the fourth processing pipeline and the second processing pipeline and the first condenser, and second safety discharge pipeline is fixedly connected between the second processing pipeline between the third processing pipeline and the first processing pipeline and the second condenser.
[0009] A first bypass pipeline is fixedly connected to the first processing pipelines on both sides of the first pressure regulator. The left inlet of the first bypass pipeline is located on the first processing pipeline between the first condenser and the first pressure regulator, and the right outlet of the first bypass pipeline is located on the first processing pipeline between the fourth processing pipeline and the first safety discharge pipeline. A second bypass pipeline is fixedly connected to the second processing pipelines on both sides of the second pressure regulator. The left inlet of the second bypass pipeline is located on the second processing pipeline between the second condenser and the second pressure regulator, and the right outlet of the second bypass pipeline is located on the second processing pipeline between the third processing pipeline and the second safety discharge pipeline.
[0010] The above also includes a standby boiler, and a third treatment pipeline between the boiler and the flare line is fixedly connected to the standby boiler via a standby treatment pipeline.
[0011] Safety valves are installed on the aforementioned flare line, first safety discharge line, and second safety discharge line.
[0012] This utility model has a reasonable and compact structure and is easy to use. It sends the high flash gas from the gasified ash water sent from the high-pressure flash tank to the boiler for co-firing with by-product steam after condensation treatment by the first condenser. It can effectively recover the high flash gas from the gasified ash water and utilize the combustible by-product steam rich in the high flash gas from the gasified ash water, thereby reducing the consumption of natural gas in the flare, reducing the release of waste gas, and alleviating the pressure on environmental protection. Attached Figure Description
[0013] Appendix Figure 1 This is a schematic diagram of the process flow of this utility model.
[0014] Appendix Figure 1 The codes are as follows: 1 for the first condenser, 2 for the second condenser, 3 for the flare, 4 for the boiler, 5 for the first treatment line, 6 for the second treatment line, 7 for the third treatment line, 8 for the fourth treatment line, 9 for the flare line, 10 for the first pressure regulator, 11 for the second pressure regulator, 12 for the first safety discharge line, 13 for the second safety discharge line, 14 for the first bypass line, 15 for the second bypass line, 16 for the standby boiler, 17 for the standby treatment line, 18 for the safety valve, and 19 for the auxiliary line. Detailed Implementation
[0015] This utility model is not limited to the following embodiments, and the specific implementation method can be determined according to the technical solution of this utility model and the actual situation.
[0016] Unless otherwise specified, all equipment and devices used in this invention are existing and commonly known in the art. For example, the first pressure regulator 10 and the second pressure regulator 11, the first condenser 1 and the second condenser 2 are existing and commonly known equipment.
[0017] In this utility model, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as the positional relationships of front, back, top, bottom, left, and right, which are based on the instructions attached. Figure 1 The orientation of the layout is determined by the direction of the map.
[0018] The present invention will be further described below with reference to the embodiments and accompanying drawings:
[0019] Example 1: As shown in the attached document Figure 1 As shown, the gasification ash water high flash gas recovery device includes a first condenser 1, a second condenser 2, a flare 3, and a boiler 4. A first processing pipeline 5 is fixedly connected between the outlet of the first condenser 1 and the inlet of the flare 3. A second processing pipeline 6 is fixedly connected between the outlet of the second condenser 2 and the first processing pipeline 5. A third processing pipeline 7 is fixedly connected between the second processing pipeline 6 and the inlet of the boiler 4. A fourth processing pipeline 8 is fixedly connected between the first processing pipeline 5 and the third processing pipeline 7 between the first condenser 1 and the second processing pipeline 6. A flare-to-flare pipeline 9 is fixedly connected between the first processing pipeline 5 and the third processing pipeline 7 between the second processing pipeline 6 and the flare 3.
[0020] In operation, the high flash gas from the gasified ash water supplied upstream is condensed in the first condenser 1 and then sent to the boiler 4 via the first processing pipeline 5, the fourth processing pipeline 8, and the third processing pipeline 7 to co-fire by-product steam. The combustible by-product steam in the high flash gas is reused. When the volume of high flash gas is large, it can be sent to the second condenser 2 for condensation and then sent to the boiler 4 via the second processing pipeline 6 and the third processing pipeline 7 to co-fire by-product steam. The first condenser 1 and the second condenser 2 can be used individually or simultaneously, depending on the volume of high flash gas. After implementation, this invention effectively recovers high flash gas from gasified ash water, utilizing the abundant combustible by-product steam, reducing the consumption of natural gas in the flare 3, reducing waste gas release, and alleviating environmental pressure.
[0021] The above-mentioned gasification ash water high flash gas recovery device can be further optimized and / or improved according to actual needs:
[0022] Example 2: The difference between Example 1 and Example 2 is that, as needed, heat tracing tape is coiled around both the third processing pipeline 7 and the fourth processing pipeline 8, and an insulation layer is provided on the outside of the heat tracing tape. The insulation layer material is rock wool, aluminum silicate fiber blanket or aluminum sheet.
[0023] During use, the flash gas from the gasified ash water contains gases such as ammonia and carbon monoxide. After the flash gas from the gasified ash water condenses, it will produce moisture. When the pipeline temperature is low, ammonium salt crystals will form, which can block the pipeline in severe cases and affect the normal operation of the process. This device adds a heat tracing cable to effectively solve the problem of ammonium salt crystallization in the pipeline.
[0024] Example 3: Its difference from Examples 1 to 2 is as follows: (See attached) Figure 1 As shown, a first pressure regulator 10 is fixedly installed on the first processing pipeline 5 between the first condenser 1 and the fourth processing pipeline 8, and a second pressure regulator 11 is fixedly installed on the second processing pipeline 6 between the second condenser 2 and the third processing pipeline 7.
[0025] During use, the pressure is monitored by the first pressure regulator 10 and the second pressure regulator 11 to ensure the safe operation of the device.
[0026] Example 4: Its difference from Examples 1 to 3 is as follows: (See attached) Figure 1 As shown, a first safety discharge pipeline 12 is fixedly connected between the first processing pipeline 5 and the first condenser 1 between the fourth processing pipeline 8 and the second processing pipeline 6, and a second safety discharge pipeline 13 is fixedly connected between the second processing pipeline 6 and the second condenser 2 between the third processing pipeline 7 and the first processing pipeline 5.
[0027] In order to prevent overpressure in the pipeline during use, a first safety discharge pipeline 12 and a second safety discharge pipeline 13 are set up. In case of overpressure, it is convenient to send the gas to the flare 3 in a timely manner through the first safety discharge pipeline 12 and the second safety discharge pipeline 13 to ensure the safe operation of the device.
[0028] Example 5: It differs from Example 4 in that, as shown in the attached document... Figure 1As shown, a first bypass line 14 is fixedly connected to the first processing lines 5 on the left and right sides of the first pressure regulator 10. The left inlet of the first bypass line 14 is located on the first processing line 5 between the first condenser 1 and the first pressure regulator 10, and the right outlet of the first bypass line 14 is located on the first processing line 5 between the fourth processing line 8 and the first safety discharge line 12. A second bypass line 15 is fixedly connected to the second processing lines 6 on the left and right sides of the second pressure regulator 11. The left inlet of the second bypass line 15 is located on the second processing line 6 between the second condenser 2 and the second pressure regulator 11, and the right outlet of the second bypass line 15 is located on the second processing line 6 between the third processing line 7 and the second safety discharge line 13.
[0029] During use, when the first pressure regulator 10 and the second pressure regulator 11 malfunction and cannot detect the pressure inside the pipeline, the gasified ash water high flash gas can be sent to the flare 3 through the first bypass pipeline 14 or the second bypass pipeline 15.
[0030] Example 6: Its difference from Examples 1 to 5 is as follows: (See attached) Figure 1 As shown, it also includes a standby boiler 16, and a third processing pipeline 7 between boiler 4 and flare line 9 is fixedly connected to the standby boiler 16 via a standby processing pipeline 17.
[0031] During use, when the amount of high flash gas from gasified ash water is large, the standby boiler 16 is not limited to one unit but can be multiple units, utilizing the combustible by-product steam heat source in the high flash gas from gasified ash water.
[0032] Example 7: It differs from Examples 4 to 6 in that: as shown in the appendix Figure 1 As shown, safety valves 18 are installed on the flare line 9, the first safety discharge line 12, and the second safety discharge line 13.
[0033] As needed, auxiliary lines 19 are added to both the first safety discharge line 12 and the second safety discharge line 13 corresponding to the position of safety valve 18. During use, these auxiliary lines 19 can be used as a means of manual pressure relief in case of abnormalities in the production process, so as to reduce pressure in a timely manner and prevent equipment damage or other emergencies.
[0034] As needed, conventional valves known in the art can be installed on each pipeline and equipment of the gasified ash water high flash gas recovery device.
[0035] The above technical features constitute the embodiments of this utility model, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.
[0036] The usage process of this utility model embodiment is as follows: The high flash gas of gasified ash water sent from the upstream is condensed by the first condenser 1 and then sent to the boiler 4 through the first treatment pipeline 5, the fourth treatment pipeline 8 and the third treatment pipeline 7 to burn by-product steam. At the same time, the high flash gas of gasified ash water sent from the high-pressure flash tank can also be sent to the second condenser 2 for condensation and then sent to the boiler 4 through the second treatment pipeline 6 and the third treatment pipeline 7 to co-burn by-product steam. When the first pressure regulator 10 or the second pressure regulator 11 malfunctions, the high flash gas of gasified ash water sent from the first condenser 1 is sent to the flare 3 through the first safety discharge pipeline 12 and the first treatment pipeline 5, and the high flash gas of gasified ash water sent from the second condenser 2 is sent to the flare 3 through the second safety discharge pipeline 13, the second treatment pipeline 6 and the first treatment pipeline 5.
Claims
1. A gasification ash water high flash gas recovery apparatus characterized by The first condenser, the second condenser, the torch and the boiler are connected by the first treatment pipeline, the second treatment pipeline and the third treatment pipeline.
2. The gasification ash water high flash recovery apparatus according to claim 1, characterized by The third treatment pipeline and the fourth treatment pipeline are provided with heat tracing bands, and the heat tracing bands are provided with heat preservation layers outside.
3. The gasification gas water high flash recovery apparatus according to claim 1 or 2, characterized by The first treatment pipeline between the first condenser and the fourth treatment pipeline is provided with the first pressure regulator.
4. The gasification gas water high flash recovery apparatus according to claim 3, characterized by The first treatment pipeline between the fourth treatment pipeline and the second treatment pipeline and the first condenser are connected by the first safety discharge pipeline.
5. The gasification gas water high flash recovery apparatus according to claim 1 or 2 or 4, characterized by The first treatment pipeline corresponding to the left and right sides of the first pressure regulator is provided with the first bypass pipeline.
6. The gasification grey water high flash vapor recovery apparatus of claim 3, wherein The second treatment pipeline corresponding to the left and right sides of the second pressure regulator is provided with the second bypass pipeline.
7. The gasification, grey water high flash vapor recovery apparatus of claim 3, wherein The third treatment pipeline between the boiler and the torch is connected with the standby boiler by the standby treatment pipeline.
8. The gasification gas water high flash recovery apparatus according to claim 4 or 6, characterized by The third treatment pipeline between the boiler and the torch is connected with the standby boiler by the standby treatment pipeline. Safety valves are arranged on the torch discharge pipeline, the first safety discharge pipeline and the second safety discharge pipeline. Safety valves are arranged on the torch discharge pipeline, the first safety discharge pipeline and the second safety discharge pipeline.