CN211734261U - Purification system of high temperature domestic waste pyrolysis oil gas - Google Patents
Purification system of high temperature domestic waste pyrolysis oil gas Download PDFInfo
- Publication number
- CN211734261U CN211734261U CN202020104625.3U CN202020104625U CN211734261U CN 211734261 U CN211734261 U CN 211734261U CN 202020104625 U CN202020104625 U CN 202020104625U CN 211734261 U CN211734261 U CN 211734261U
- Authority
- CN
- China
- Prior art keywords
- cooler
- decoking
- oil gas
- tar
- pyrolysis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Industrial Gases (AREA)
Abstract
The utility model belongs to the technical field of pyrolysis of giving up admittedly and energy application thereof, concretely relates to clean system of high temperature domestic waste pyrolysis oil gas, including cyclone, decoking cooler A, fan A, decoking cooler B, fan B, washing tower, alkaline wash tower, tar coalescer A, tar filter B, tar coalescer B and tar storage tank. The system and the method for purifying the garbage pyrolysis oil gas separate flying ash, tar, HCl, HF and other acidic substances in the garbage pyrolysis oil gas to obtain clean pyrolysis gas, improve the heat value of the pyrolysis gas, reduce the corrosion of the tar and the acidic substances to pipelines and equipment, ensure the stability and the safety of system operation, and eliminate Cl ions through deacidification to avoid the possibility of resynthesis of dioxin.
Description
Technical Field
The utility model belongs to the technical field of solid useless pyrolysis and energy application thereof, concretely relates to system that high temperature domestic waste pyrolysis oil gas purified.
Background
At present, the problem of disposing municipal solid waste has become a focus of attention of all people. The existing treatment means aiming at the household garbage comprises technologies such as landfill, composting and incineration, but due to the limitations of the technologies, the pollution to land, water sources and atmosphere is brought, and particularly dioxin generated by incineration poses great threats to the health of human bodies. Along with the improvement of the environmental protection requirement, the pyrolysis technology is more and more emphasized in the treatment of the household garbage, the method avoids the generation of dioxin, the generated pyrolysis oil, pyrolysis gas and pyrolysis residual carbon can be used as fuels, and the pyrolysis oil can be further separated and purified to obtain more chemical raw materials. Similar to biomass pyrolysis, the pyrolysis products of waste also contain a part of tar, which exists in the form of gas phase in the pyrolysis reactor because of the high temperature zone and reacts with heatThe pyrolysis gas is discharged together, and tar can be condensed and coked on pipelines and equipment along with the reduction of temperature in the process of conveying the pyrolysis gas, so that the pipelines and the equipment are blocked, and the stable and safe operation of a system is greatly influenced. And the complexity of the waste pyrolysis products is caused by the complexity of the waste components. The pyrolysis gas contains CH4、H2Besides combustible gases, HCl, HF and other acidic gases are also contained, which corrode system pipelines and equipment, reduce the service life of the system pipelines and cause hidden troubles of safe operation.
In the existing garbage pyrolysis process flow, pyrolysis oil gas is generally used as fuel and is directly sent into an incinerator or is directly combusted in a gasification layer, so that the oil gas fuel is not subjected to the purification processes of decoking and deacidification, thus corrosion and blockage of tar and acidic substances to equipment and pipelines are caused, and Cl is used as the fuel-The existence of the ions provides conditions for the re-synthesis of the dioxin.
Disclosure of Invention
Therefore, the to-be-solved main technical problem of the utility model is to overcome rubbish pyrolysis oil gas direct combustion among the current pyrolysis technology, block up the problem of corroding equipment pipeline, easily secondary generation dioxin. The utility model provides a system and method that rubbish pyrolysis oil gas purified, with the flying dust in the rubbish pyrolysis oil gas, tar and acidic material such as HCl, HF isolate, obtain clean pyrolysis gas, improve pyrolysis gas's calorific value, reduce tar and acidic material to the corruption of pipeline and equipment, guarantee system operation's stability and security to detach the Cl ion through deacidification, stop the possibility of dioxin resynthesis.
The technical scheme of the utility model as follows:
a purification system for high-temperature domestic garbage pyrolysis oil gas comprises a cyclone dust collector, a decoking cooler A, a fan A, a decoking cooler B, a fan B, a water washing tower, an alkaline washing tower, a tar coalescer A, a tar filter B, a tar coalescer B and a tar storage tank;
the pyrolysis gas firstly enters a cyclone dust collector, the top of the cyclone dust collector is connected with the top of a decoking cooler A, the bottom of the decoking cooler A is connected with the upper part of a tar filter A, and the lower part of the tar filter A is connected with a tar storage tank;
the bottom of the decoking cooler A is connected with the top of the decoking cooler B, the bottom of the decoking cooler B is connected with the upper part of the tar filter B, the bottom of the tar filter B is connected with the middle part of the tar coalescer B, and the bottom of the tar coalescer B is connected with the tar storage tank;
the bottom of the decoking cooler B is connected with the bottom of the water washing tower, the top of the water washing tower is connected with the bottom of the alkaline washing tower, the top of the alkaline washing tower is connected with the middle part of the tar coalescer A, the top of the tar coalescer A is connected with the middle part of the decoking cooler B, and the bottom of the tar coalescer A is connected with the tar storage tank;
the bottoms of the decoking cooler A and the decoking cooler B are respectively connected with a fan A and a fan B; the tar separated from the bottoms of the tar coalescer A and the tar coalescer B directly enters an oil storage tank, and the separated water enters a water treatment system.
Further, as above the purification system of high temperature domestic waste pyrolysis oil gas, decoking cooler A and decoking cooler B divide equally into two sections about, the pyrolysis oil gas after the upper segment used purification cooling is as coolant, and the hypomere uses the air as coolant, cools down high temperature pyrolysis oil gas.
Further, as for the purification system for the high-temperature domestic garbage pyrolysis oil gas, the decoking cooler A and the decoking cooler B adopt a vertical shell-and-tube cooler structure.
Further, in the purification system for the pyrolysis oil gas of the high-temperature household garbage, the high-temperature pyrolysis oil gas to be cooled is moved in a tube pass in the decoking cooler A and the decoking cooler B, and the high-temperature pyrolysis oil gas enters from the top and exits from the bottom; and air or the purified and cooled pyrolysis oil gas is fed in and out from the shell side.
Furthermore, as above, in the decoking cooler a and the decoking cooler B, the shell pass is divided into an upper section and a lower section, the upper section cools the high-temperature pyrolysis oil gas by adopting the pyrolysis oil gas after purification and cooling, and the lower section cools the pyrolysis oil gas by taking air as a cooling medium.
Further, in the purification system for pyrolysis oil gas of high-temperature household garbage, in the decoking cooler A and the decoking cooler B, the lower section of cooling medium air is blown in by the fan A and the fan B respectively; and controlling the temperature of the pyrolysis oil gas discharged from outlets at the bottoms of the decoking cooler A and the decoking cooler B by adjusting the flow of air.
Furthermore, according to the purification system for the pyrolysis oil gas of the high-temperature household garbage, the spray liquid of the washing tower is industrial water.
Further, according to the purification system for the pyrolysis oil gas of the high-temperature household garbage, the spraying liquid in the alkaline tower is a NaOH solution and is used for absorbing acid gas in the pyrolysis oil gas.
The utility model discloses a show the effect and lie in:
the high-temperature pyrolysis gas passes through a cyclone dust collector, and most of fly ash is separated. The pyrolysis gas passes through the 2 nd-stage cooling decoking device and the tar coalescer, the tar removing precision is high, the tar content in the pyrolysis gas is small, and the possibility of carbon deposition in the storage and use processes of the pyrolysis gas is reduced; the cooling medium of the cooling decoking device is partly air and partly purified pyrolysis gas, and the structure has the advantages of three aspects:
firstly, waste water generated by spray cooling in a common flow is not generated;
secondly, the problems of large occupied area and complex piping among coolers due to the adoption of two or more coolers connected in series are avoided;
thirdly, part of heat in the pyrolysis gas is recycled, the temperature of the purified pyrolysis gas is increased, and the combustion efficiency is improved for combustion.
And the arrangement of a 2-stage alkaline washing packed tower removes acid gases such as HCl, HF and the like in pyrolysis gas. The whole purification system recovers tar in the pyrolysis gas, removes acidic substances in the pyrolysis gas, basically generates no wastewater, obtains clean pyrolysis gas, improves the heat value of the pyrolysis gas, reduces the corrosion of the tar and the acidic substances to pipelines and equipment, and ensures the stability and the safety of the system operation. After the recovered tar reaches the scale, light oil, phenol oil, naphthalene oil, maltha and the like can be distilled out through a distillation tower, so that the economic value of the tar is improved.
Drawings
FIG. 1 is a schematic structural view of a system for purifying pyrolysis oil gas of high-temperature household garbage according to the present invention;
in the figure: 1-cyclone dust collector; 2-decoking cooler A; 3-a fan A; 4-decoking cooler B; 5-a fan B; 6-water washing tower; 7-an alkaline washing tower; 8-tar coalescer A; 9-a tar filter; 10-tar filter B; 11-tar coalescer B; 12-tar storage tank.
Detailed Description
The system and method for purifying oil gas by pyrolysis of high-temperature domestic garbage according to the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1, the utility model relates to a purification system of high temperature domestic waste pyrolysis oil gas, including cyclone 1, decoking cooler A2, fan A3, decoking cooler B4, fan B5, washing tower 6, alkaline tower 7, tar coalescer A8, tar filter A9, tar filter B10, tar coalescer B11 and tar storage tank 12;
wherein, pyrolysis gas firstly enters a cyclone dust collector 1, the top of the cyclone dust collector 1 is connected with the top of a decoking cooler A2, the bottom of the decoking cooler A2 is connected with the upper part of a tar filter A9, and the lower part of the tar filter A9 is connected with a tar storage tank 12;
the bottom of the decoking cooler A2 is connected with the top of the decoking cooler B4, the bottom of the decoking cooler B4 is connected with the upper part of the tar filter B10, the bottom of the tar filter B10 is connected with the middle part of the tar coalescer B11, and the bottom of the tar coalescer B11 is connected with the tar storage tank 12;
the bottom of the decoking cooler B4 is connected with the bottom of the water scrubber 6, the top of the water scrubber 6 is connected with the bottom of the alkaline scrubber 7, the top of the alkaline scrubber 7 is connected with the middle part of the tar coalescer A8, the top of the tar coalescer A8 is connected with the middle part of the decoking cooler B4, and the bottom of the tar coalescer A8 is connected with the tar storage tank 12;
the bottoms of the decoking cooler A2 and the decoking cooler B4 are respectively connected with a fan A3 and a fan B5; the tar separated from the bottoms of the tar coalescer A8 and the tar coalescer B11 directly enters an oil storage tank, and the separated water enters a water treatment system.
In this embodiment, the decoking cooler a2 and the decoking cooler B4 are both divided into an upper section and a lower section, the upper section uses the purified and cooled pyrolysis oil gas as a cooling medium, and the lower section uses air as a cooling medium to cool the high-temperature pyrolysis oil gas; the decoking cooler A2 and the decoking cooler B4 adopt a vertical shell-and-tube cooler structure; in the decoking cooler A2 and the decoking cooler B4, high-temperature pyrolysis oil gas needing cooling is fed in a tube pass and goes out from top to bottom; and air or the purified and cooled pyrolysis oil gas is fed in and out from the shell side.
In the decoking cooler A2 and the decoking cooler B4, the shell pass is divided into an upper section and a lower section, the upper section adopts the pyrolysis oil gas after purification and temperature reduction to cool the high-temperature pyrolysis oil gas, and the lower section takes air as a cooling medium to cool the pyrolysis oil gas.
In the decoking cooler A2 and the decoking cooler B4, the lower section cooling medium air is respectively blown in by a fan A3 and a fan B5; and controlling the temperature of pyrolysis oil gas discharged from the bottom outlets of the decoking cooler A2 and the decoking cooler B4 by adjusting the flow of air.
The spray liquid of the water scrubber 6 is industrial water; the spray liquid in the alkaline tower 7 is NaOH solution and is used for absorbing acid gas in the pyrolysis oil gas.
Based on the system, the method for purifying the pyrolysis oil gas of the high-temperature household garbage comprises the following steps:
step one, high-temperature pyrolysis oil gas from a pyrolysis reactor enters a cyclone dust collector 1 for dust removal, and more than 90% of fly ash is separated from the cyclone dust collector;
step two, the high-temperature pyrolysis oil gas subjected to dust removal in the step one enters a decoking cooler A2 tube pass, the decoking cooler A2 shell pass is divided into an upper part and a lower part 2, the cooling medium in the upper part of the shell pass is the purified and cooled pyrolysis gas, and the cooling medium in the lower part is air; air is blown in by a fan A3, and the temperature of pyrolysis oil gas discharged from an outlet at the bottom of a decoking cooler A2 is 150 ℃ by adjusting the flow control of the blown air;
at the temperature of 150 ℃, the water vapor in the pyrolysis oil gas is still in a gaseous state, and the tar in the gaseous state at the temperature of 500 ℃ has a part which is condensed along with the temperature reduction to 150 ℃ and is condensed into the tube pass of the decoking cooler A2, and the liquid tar flows to the bottom of the decoking cooler under the action of gravity because the decoking cooler is in a vertical structure;
step three, the liquid tar obtained in the step two then enters a tar filter A9 to remove the slag in the tar, and the tar is conveyed to a tar storage tank 12;
step four, the pyrolysis oil gas from the decoking cooler A2 enters a decoking cooler B4 for further cooling and decoking, and air serving as a cooling medium at the lower section is blown in by a fan B5;
the temperature of the pyrolysis oil gas from the bottom of the decoking cooler B4 is kept below 100 ℃, water vapor is condensed in the temperature range, and the inside of the tube pass of the decoking cooler B4 is a mixture of water and tar;
the sub-mixture firstly passes through a tar filter B10 to remove solid oil residue contained in the sub-mixture, and then is conveyed to a tar coalescer B11 for oil-water separation, the separated water is used as the water supplement of a subsequent water washing tower 6, and the separated tar is conveyed to a tar storage tank 12 for storage;
fifthly, the pyrolysis oil gas from the bottom of the decoking cooler B4 is at the temperature of 80 +/-5 ℃, enters from the bottom of the water scrubber 6, contacts with the circulating spray liquid in the water scrubber 6, is further cooled, and is absorbed by acid gases such as HCl and the like;
the pyrolysis oil gas after being washed by water enters the bottom of an alkaline washing tower 7 from the top of the water washing tower 6 for further alkaline washing operation; the purified pyrolysis oil gas comes out from the top of the alkaline tower 7 and is conveyed to a tar coalescer A8, water vapor fog drops and tar fog drops in the pyrolysis oil gas are further removed in the tar coalescer A8, tar in the pyrolysis oil gas is conveyed to a tar storage tank 12, and separated water is used as water supplement of the water washing tower 6 and the alkaline tower 7.
Claims (10)
1. The utility model provides a clean system of high temperature domestic waste pyrolysis oil gas which characterized in that: comprises a cyclone dust collector (1), a decoking cooler A (2), a fan A (3), a decoking cooler B (4), a fan B (5), a water washing tower (6), an alkaline washing tower (7), a tar coalescer A (8), a tar filter A (9), a tar filter B (10), a tar coalescer B (11) and a tar storage tank (12).
2. The system for purifying oil gas generated by pyrolysis of high-temperature domestic garbage according to claim 1, wherein: pyrolysis gas firstly enters a cyclone dust collector (1), the top of the cyclone dust collector (1) is connected with the top of a decoking cooler A (2), the bottom of the decoking cooler A (2) is connected with the upper part of a tar filter A (9), and the lower part of the tar filter A (9) is connected with a tar storage tank (12);
the bottom of the decoking cooler A (2) is connected with the top of the decoking cooler B (4), the bottom of the decoking cooler B (4) is connected with the upper part of the tar filter B (10), the bottom of the tar filter B (10) is connected with the middle part of the tar coalescer B (11), and the bottom of the tar coalescer B (11) is connected with the tar storage tank (12);
the bottom of the decoking cooler B (4) is connected with the bottom of the water washing tower (6), the top of the water washing tower (6) is connected with the bottom of the alkaline washing tower (7), the top of the alkaline washing tower (7) is connected with the middle part of the tar coalescer A (8), the top of the tar coalescer A (8) is connected with the middle part of the decoking cooler B (4), and the bottom of the tar coalescer A (8) is connected with the tar storage tank (12);
the bottoms of the decoking cooler A (2) and the decoking cooler B (4) are respectively connected with a fan A (3) and a fan B (5); the tar separated from the bottoms of the tar coalescer A (8) and the tar coalescer B (11) directly enters an oil storage tank, and the separated water enters a water treatment system.
3. The system for purifying oil gas generated by pyrolysis of high-temperature domestic garbage according to claim 2, wherein: the decoking cooler A (2) and the decoking cooler B (4) are divided into an upper section and a lower section, the upper section uses the purified and cooled pyrolysis oil gas as a cooling medium, and the lower section uses air as a cooling medium to cool the high-temperature pyrolysis oil gas.
4. The system for purifying oil gas generated by pyrolysis of high-temperature domestic garbage according to claim 2, wherein: the decoking cooler A (2) and the decoking cooler B (4) adopt a vertical shell-and-tube cooler structure.
5. The system for purifying oil gas generated by pyrolysis of high-temperature domestic garbage according to claim 1, wherein: in the decoking cooler A (2) and the decoking cooler B (4), high-temperature pyrolysis oil gas needing to be cooled is moved through a tube pass, and the oil gas is fed in and discharged out; and air or the purified and cooled pyrolysis oil gas is fed in and out from the shell side.
6. The system for purifying oil gas generated by pyrolysis of high-temperature domestic garbage according to claim 5, wherein: in the decoking cooler A (2) and the decoking cooler B (4), the shell pass is divided into an upper section and a lower section, the upper section adopts the pyrolysis oil gas after purification and cooling to cool the high-temperature pyrolysis oil gas, and the lower section uses air as a cooling medium to cool the pyrolysis oil gas.
7. The system for purifying oil gas generated by pyrolysis of high-temperature domestic garbage according to claim 5, wherein: in the decoking cooler A (2) and the decoking cooler B (4), cooling medium air at the lower section is respectively blown in by the fan A (3) and the fan B (5); and controlling the temperature of the pyrolysis oil gas discharged from the bottom outlets of the decoking cooler A (2) and the decoking cooler B (4) by adjusting the flow of air.
8. The system for purifying oil gas generated by pyrolysis of high-temperature domestic garbage according to claim 2, wherein: the spray liquid of the water washing tower (6) is industrial water.
9. The system for purifying oil gas generated by pyrolysis of high-temperature domestic garbage according to claim 2, wherein: and the spray liquid in the alkaline tower (7) is NaOH solution and is used for absorbing acid gas in the pyrolysis oil gas.
10. The system for purifying oil gas generated by pyrolysis of high-temperature domestic garbage according to claim 1, wherein: the decoking cooler A (2) and the decoking cooler B (4) are divided into an upper section and a lower section, the upper section uses the purified and cooled pyrolysis oil gas as a cooling medium, and the lower section uses air as a cooling medium to cool the high-temperature pyrolysis oil gas;
the decoking cooler A (2) and the decoking cooler B (4) adopt a vertical shell-and-tube cooler structure;
in the decoking cooler A (2) and the decoking cooler B (4), high-temperature pyrolysis oil gas needing to be cooled is moved through a tube pass, and the oil gas is fed in and discharged out; the shell pass is filled with air or the purified and cooled pyrolysis oil gas, and the oil gas enters from the bottom to the top;
in the decoking cooler A (2) and the decoking cooler B (4), the shell side is divided into an upper section and a lower section, the upper section adopts the purified and cooled pyrolysis oil gas to cool the high-temperature pyrolysis oil gas, and the lower section uses air as a cooling medium to cool the pyrolysis oil gas;
in the decoking cooler A (2) and the decoking cooler B (4), cooling medium air at the lower section is respectively blown in by the fan A (3) and the fan B (5); controlling the temperature of pyrolysis oil gas discharged from the bottom outlets of the decoking cooler A (2) and the decoking cooler B (4) by adjusting the flow of air;
the spray liquid of the water washing tower (6) is industrial water;
and the spray liquid in the alkaline tower (7) is NaOH solution and is used for absorbing acid gas in the pyrolysis oil gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020104625.3U CN211734261U (en) | 2020-01-17 | 2020-01-17 | Purification system of high temperature domestic waste pyrolysis oil gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020104625.3U CN211734261U (en) | 2020-01-17 | 2020-01-17 | Purification system of high temperature domestic waste pyrolysis oil gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211734261U true CN211734261U (en) | 2020-10-23 |
Family
ID=72879454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020104625.3U Active CN211734261U (en) | 2020-01-17 | 2020-01-17 | Purification system of high temperature domestic waste pyrolysis oil gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211734261U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114212961A (en) * | 2021-12-13 | 2022-03-22 | 北京城市排水集团有限责任公司 | Sludge micro-positive pressure carbonization control system and gas purification method |
-
2020
- 2020-01-17 CN CN202020104625.3U patent/CN211734261U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114212961A (en) * | 2021-12-13 | 2022-03-22 | 北京城市排水集团有限责任公司 | Sludge micro-positive pressure carbonization control system and gas purification method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9410095B2 (en) | Method of gasification of biomass using gasification island | |
| EP2496665B1 (en) | System and process for gasifying biomass | |
| JP2007045857A (en) | Method and apparatus for purifying gasified gas | |
| CN108676570B (en) | Harmless treatment and recycling system and technology for Fischer-Tropsch synthesis slag wax and oil sludge | |
| CN102585917B (en) | Technology and system for cooling-absorbing coupling deep-removing tar from biomass gas | |
| CN211734261U (en) | Purification system of high temperature domestic waste pyrolysis oil gas | |
| Muzenda | A comparative review of waste tyre pyrolysis, gasification and liquefaction (PGL) processes | |
| CN101017022A (en) | Novel technology for directly using charring gas of biomass as boiler fuel | |
| CN101186836B (en) | Method for removing tar oil from gasified combustible gas by using waste rubber and plastic crack oil | |
| CN113136231A (en) | Purification system and method for high-temperature household garbage pyrolysis oil gas | |
| CN207552149U (en) | A kind of oil sludge handles recycling system | |
| KR101699057B1 (en) | Total amount of useful energy conversion system of waste resources | |
| CN114276837A (en) | Biomass gasification process | |
| CN110452729A (en) | A kind of oil recovery system of RDF pyrolysis gas | |
| CN110591765A (en) | RDF pyrolysis gas noncondensable gas clean system | |
| CN109022050A (en) | The combined type fractional condensing unit and gasification of biomass pyrolysis gas separation method vented one's spleen for separating biomass heat of gasification | |
| CN113908679A (en) | Synthetic gas purification method | |
| CN211972240U (en) | High temperature rubbish pyrolysis oil gas washing clean system | |
| CN207552268U (en) | A kind of biomass pyrolytic air purifying apparatus | |
| CN211734275U (en) | Separation and purification system for high-temperature household garbage pyrolysis oil gas | |
| CN112480975A (en) | Purification process of straw pyrolysis gas | |
| CN111649331A (en) | High-efficient rubbish pyrolytic processing system | |
| CN115433609B (en) | Energy-saving type data center energy supply system and process | |
| CN101085926A (en) | Waste and old plastic, rubber reclaiming method and device thereof | |
| CN212408671U (en) | High-efficient rubbish pyrolytic processing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |