CN213738949U - A preprocessing device for phenol ammonia retrieves - Google Patents
A preprocessing device for phenol ammonia retrieves Download PDFInfo
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- CN213738949U CN213738949U CN202022514025.7U CN202022514025U CN213738949U CN 213738949 U CN213738949 U CN 213738949U CN 202022514025 U CN202022514025 U CN 202022514025U CN 213738949 U CN213738949 U CN 213738949U
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- oil
- pipeline
- removal
- coalescence
- precipitation
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- XABJJJZIQNZSIM-UHFFFAOYSA-N azane;phenol Chemical compound [NH4+].[O-]C1=CC=CC=C1 XABJJJZIQNZSIM-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000007781 pre-processing Methods 0.000 title claims abstract description 8
- 239000000428 dust Substances 0.000 claims abstract description 36
- 238000001556 precipitation Methods 0.000 claims abstract description 26
- 239000002253 acid Substances 0.000 claims abstract description 21
- 238000004581 coalescence Methods 0.000 claims abstract description 20
- 238000004062 sedimentation Methods 0.000 claims abstract description 20
- 238000000926 separation method Methods 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 238000011084 recovery Methods 0.000 claims abstract description 14
- 239000010802 sludge Substances 0.000 claims abstract description 14
- 239000002351 wastewater Substances 0.000 claims abstract description 11
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 19
- 239000011261 inert gas Substances 0.000 claims description 4
- 239000010865 sewage Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 66
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 239000007788 liquid Substances 0.000 description 6
- 230000009615 deamination Effects 0.000 description 3
- 238000006481 deamination reaction Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000000844 transformation Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model discloses a pretreatment device for phenol ammonia recovery, which comprises an oil separation precipitation device, a sedimentation device, a filtering device, a coalescence oil removal device and a secondary oil removal and dust removal device; one side of the oil removal and precipitation device is connected with a phenolic wastewater feeding pipeline, and the middle part of the other side of the oil removal and precipitation device is connected with the precipitation device; the middle lower part of the settling device is connected with the coalescence deoiling device, and a pipeline is provided with a filtering device; the coalescence oil removal device is connected with the front end of the secondary oil removal and dust removal device; the top of the secondary oil and dust removing device is provided with an acid gas inlet, and a pipeline is arranged to be connected with an acid gas torch; the upper parts of the oil separation precipitation device, the sedimentation device, the coalescence oil removal device and the secondary oil removal and dust removal device are all provided with light oil discharge pipelines; the bottom is provided with an oil sludge discharge pipeline connected with the sludge collecting pool. The utility model discloses reasonable in process, the investment cost is low, and usable waste resources effectively reduces oil dirt content, is a preprocessing device who realizes phenol ammonia recovery unit long period steady operation.
Description
Technical Field
The utility model belongs to the sewage treatment field especially relates to a preprocessing device for phenol ammonia retrieves.
Background
Coal gasification (lurgi), semi coke, etc. produce phenol-containing wastewater during production, and are often treated by a process combining phenol-ammonia recovery and biochemical treatment. In the actual operation process, the heat exchangers of the deacidification and deamination tower and the extraction tower of the phenol ammonia recovery device and the heat exchangers between the deacidification and deamination tower and the extraction tower are seriously blocked, so that the long-period stable operation cannot be realized.
The phenol-containing wastewater has high oil-dust content and small dust particle size, the oil-dust content is difficult to effectively reduce through simple sedimentation and filtration (a plurality of ceramic membranes with the precision of 100nm still exist after filtration), and the oil dust is still separated out when the pH is reduced to cause blockage, which is particularly prominent after deacidification and deamination. The addition of acid (such as sulfuric acid, hydrochloric acid, etc.) to adjust the pH will inevitably result in upgrading the materials of a series of subsequent equipments and increase the investment.
Coal gasification and coke oven gas production enterprises are often matched with methanol devices, and a large amount of acid gas (the main component is CO) is released by low-temperature methanol washing of the methanol devices2) The acid gas is not utilized and is directly sent to an acid gas torch and then is discharged.
Disclosure of Invention
In order to solve the problem, the utility model aims at providing a preprocessing device for phenol ammonia recovery, reasonable in process, the investment cost is low, and usable waste resources effectively reduces oil dirt content to realize phenol ammonia recovery unit long period steady operation.
The purpose of the utility model is realized like this:
a preprocessing device for phenol ammonia recovery, its characterized in that: comprises an oil separation precipitation device, a sedimentation device, a coalescence oil removal device and a secondary oil removal and dust removal device; one side of the oil removal and precipitation device is connected with a phenolic wastewater feeding pipeline, and the middle part of the other side of the oil removal and precipitation device is connected with the precipitation device; the middle lower part of the settling device is connected with the coalescence deoiling device, and a filtering device is arranged on a pipeline; the coalescence oil removal device is connected with the front end of the secondary oil removal and dust removal device; the top of the secondary oil and dust removing device is provided with an acid gas inlet, and a pipeline is arranged to be connected with an acid gas torch; the upper parts of the oil separation precipitation device, the sedimentation device, the coalescence oil removal device and the secondary oil removal and dust removal device are all provided with light oil discharge pipelines; the bottom of the oil separation precipitation device, the sedimentation device, the filtering device and the secondary oil and dust removal device is provided with an oil sludge discharge pipeline connected with a sludge collection pool.
Furthermore, a front end baffle and a rear end baffle are arranged in the secondary oil and dust removing device and are divided into a front chamber, a middle chamber and a rear chamber, the front end baffle faces upwards from the bottom, the rear end baffle faces downwards from the top, an acid gas inlet pipeline in the front chamber extends to the lower part, a distributor is arranged at the tail end of the acid gas pipeline, a floating oil overflow pipeline is arranged in the middle chamber, and a pretreatment water outlet pipeline is arranged in the middle of the rear chamber.
Further, CO in acid gas used by secondary oil and dust removing device2The main component and the rest component are inert gases, and the flow rate of the inert gases is about 2 percent of the flow rate of the sewage.
Preferably, the oil removal and precipitation device ensures the retention time of more than 6 hours; the settling device ensures the retention time of more than 48 h; the chamber in the secondary oil and dust removing device ensures the retention time of more than 10 h.
The utility model discloses in, contain phenol waste water enters into after oil removal precipitation device tentatively gets rid of the oil slick and fatlute and subsides the device and subsides and further get rid of light oil and dirt, gets into secondary deoiling dust collector after getting into the coalescence deoiling device through straining and detaching the emulsified oil again. And after the secondary oil and dust removing device is aerated and placed still by acid gas, the effluent is discharged from the middle part, the light oil is discharged by overflow, and the oil sludge is discharged from the bottom and then is sent into a sludge collection pool together with the oil sludge of the oil separation and precipitation device and the sedimentation device. Emulsified oil and partial dissolved oil in the phenol ammonia wastewater can be removed by the device, and the oil dust content of the pretreated wastewater is further reduced, so that the long-period stable operation of the phenol ammonia recovery device is ensured.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses reasonable in process, the investment cost is low, and usable waste resources effectively reduces oil dirt content, is a preprocessing device who realizes phenol ammonia recovery unit long period steady operation.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The system comprises an oil separation and precipitation device 1, a sedimentation device 2, a filtering device 3, a coalescing device 4, a secondary oil and dust removal device 5, a phenolic wastewater feeding pipeline 6 and a sludge collecting tank 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
A pretreatment device for phenol ammonia recovery, which is shown in figure 1, comprises an oil separation and precipitation device 1, a sedimentation device 2, a filtering device 3, a coalescence oil removal device 4 and a secondary oil removal and dust removal device 5. One side of the oil separation and precipitation device 1 is connected with a phenolic wastewater feeding pipeline 6, the middle part of the other side of the oil separation and precipitation device 1 is connected with a sedimentation device 2 through a pipeline, the middle lower part of the sedimentation device 2 is connected with a coalescence oil removal device 4 through a pipeline, in order to ensure the long-period stable operation of the coalescence oil removal device, the pipelines of the sedimentation device 2 and the coalescence oil removal device 4 are provided with a filtering device 3, and the coalescence oil removal device 4 is connected with the front end of a secondary oil removal and dust removal device 5;
the upper parts of the oil separation and precipitation device 1, the sedimentation device 2, the coalescence oil removal device 4 and the secondary oil removal and dust removal device 5 are all provided with light oil discharge pipelines; the bottoms of the oil separation precipitation device 1, the sedimentation device 2, the filtering device 3 and the secondary oil and dust removal device 5 are all provided with oil sludge discharge pipelines connected with a sludge collection pool;
the secondary oil and dust removing device 5 is provided with two baffles to divide the device into three chambers, wherein the front end baffle is upward from the bottom, the rear end baffle is downward from the top, the front acid gas pipeline extends to the lower part, the tail end of the acid gas pipeline is provided with a distributor, the middle chamber is provided with an oil slick overflow pipeline, and the middle part of the rear chamber is provided with a pretreatment water outlet pipeline; the top of the secondary oil and dust removing device is provided with a pipeline connected with an acid gas torch;
the phenolic wastewater enters an oil separation precipitation device for precipitation 1 and then stays for more than 6 hours, light oil overflows from the upper part, oil sludge discharged from the bottom enters a sludge collection pool 7, clear liquid is collected from the middle part, and the clear liquid enters a settling tank 2 for further settling. After sedimentation for more than 48 hours, the floating oil overflows from the upper part and is discharged from the bottom, and the middle clear liquid enters the coalescence deoiling device 4 after being filtered by the filtering device 3 (20 microns). The suspended oil drops in the sewage are gathered and grown up to realize separation, light oil is discharged from the upper part, and clear liquid enters a front chamber of a secondary oil and dust removing device 5.
Using acid gas (CO) in the antechamber2) Aerating, overflowing the aerated clear liquid into a middle chamber to settle for more than 10h, overflowing and extracting light oil from the upper part, extracting dust and heavy oil from the bottom to a mud collecting pool, and extracting the clear liquid from the middle part after entering a rear chamber from the lower part to enter a phenol ammonia recovery device. The analysis index of the pretreated effluent water through the device has no obvious change, and the oil dust extraction amount is increased by about 1/3 compared with the similar device.
The utility model discloses the requirement is carried not considered in the relation of connection that expresses, because of carrying the machine pump that needs increase etc. not show. The stated top, upper, etc. positions are device interface positions.
The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.
Claims (3)
1. A preprocessing device for phenol ammonia recovery, its characterized in that: comprises an oil separation and precipitation device (1), a sedimentation device (2), a filtering device (3), a coalescence oil removal device (4) and a secondary oil removal and dust removal device (5); one side of the oil removal precipitation device (1) is connected with a phenolic wastewater feeding pipeline (6), and the middle part of the other side is connected with the sedimentation device (2); the middle lower part of the sedimentation device (2) is connected with the coalescence deoiling device (4), and a filtering device (3) is arranged on a pipeline; the coalescence deoiling device (4) is connected with the front end of the secondary deoiling and dedusting device (5); the top of the secondary oil and dust removing device (5) is provided with an acid gas inlet, and a pipeline is arranged to be connected with an acid gas torch; the upper parts of the oil separation and precipitation device (1), the sedimentation device (2), the coalescence oil removal device (4) and the secondary oil removal and dust removal device (5) are all provided with light oil discharge pipelines; the bottom of the oil separation and precipitation device (1), the sedimentation device (2), the filtering device (3) and the secondary oil and dust removal device (5) is provided with an oil sludge discharge pipeline connected with a sludge collection pool (7).
2. The pretreatment device for phenol ammonia recovery according to claim 1, characterized in that: the secondary oil and dust removing device is characterized in that a front end baffle and a rear end baffle are arranged in the secondary oil and dust removing device (5) and are divided into a front chamber, a middle chamber and a rear chamber, the front end baffle faces upwards from the bottom, the rear end baffle faces downwards from the top, an acid gas inlet pipeline in the front chamber extends to the lower portion, a distributor is arranged at the tail end of the acid gas pipeline, a floating oil overflow pipeline is arranged in the middle chamber, and a pretreatment water outlet pipeline is arranged in the middle of the rear chamber.
3. The pretreatment device for phenol ammonia recovery according to claim 1, characterized in that: CO in the acid gas used by the secondary oil and dust removing device (5)2The main component and the rest component are inert gases, and the flow rate of the inert gases is about 2 percent of the flow rate of the sewage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022514025.7U CN213738949U (en) | 2020-11-04 | 2020-11-04 | A preprocessing device for phenol ammonia retrieves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022514025.7U CN213738949U (en) | 2020-11-04 | 2020-11-04 | A preprocessing device for phenol ammonia retrieves |
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| Publication Number | Publication Date |
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| CN213738949U true CN213738949U (en) | 2021-07-20 |
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| CN202022514025.7U Active CN213738949U (en) | 2020-11-04 | 2020-11-04 | A preprocessing device for phenol ammonia retrieves |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112194288A (en) * | 2020-11-04 | 2021-01-08 | 查都（上海）科技有限公司 | A preprocessing device for phenol ammonia retrieves |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112194288A (en) * | 2020-11-04 | 2021-01-08 | 查都（上海）科技有限公司 | A preprocessing device for phenol ammonia retrieves |
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