CN211864512U - Coking chemical production area VOCs purifies environmental protection recovery system - Google Patents
Coking chemical production area VOCs purifies environmental protection recovery system Download PDFInfo
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- CN211864512U CN211864512U CN201922211065.1U CN201922211065U CN211864512U CN 211864512 U CN211864512 U CN 211864512U CN 201922211065 U CN201922211065 U CN 201922211065U CN 211864512 U CN211864512 U CN 211864512U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model belongs to the technical field of the VOCs (volatile organic compounds) environmental protection purification recovery processing that regional each tower, groove produced are produced to coking ization product, relate to coking ization product regional VOCs purifies environmental protection recovery system, through with coking the regional gas that contains VOCs of production wash naphthalene, pickling and alkali wash back carry out combustion processing, finally turn into this part that contains VOCs's gas and only contain CO2And H2An environmental gas of O; the utility model discloses a mode of centralized processing will coke the gas that the chemical production area contains VOCsConversion of the body to CO completely free of contamination2And H2And the waste gas is discharged after the oxygen is discharged, and the waste gas can be matched by means of the existing coke oven in the original process engineering, so that the cost is saved, and the environment-friendly effect can be achieved.
Description
Technical Field
The utility model belongs to the technical field of the VOCs (volatile organic compounds) environmental protection purification recovery processing that regional each tower, groove produced of coking chemical production, a regional VOCs purification environmental protection recovery system is produced in coking chemical production.
Background
VOCs (volatile organic compounds) generated by each tower and tank are not thoroughly treated by the original water washing tower and the acid washing tower in the coking and chemical production area, and partial VOCs tail gas is still discharged into the atmosphere through a discharge point, so that the field production environment is influenced, and the environmental protection requirement cannot be met; the most advanced treatment method in the prior art is to use a coke oven for combustion, and the tail gas discharged after treatment still contains polluting elements such as ammonia or sulfur, and the treatment result is poor.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the tail gas treatment that contains VOCs (volatile organic compounds) that the regional production of present coking ization is not thorough, contaminated air, the utility model provides a regional VOCs purifies environmental protection recovery system is produced in coking gasification can turn into the CO that does not have the pollution completely with harmful VOCs tail gas2And H2And the waste gas is discharged after the oxygen is discharged, and the waste gas can be matched by means of the existing coke oven in the original process engineering, so that the cost is saved, and the environment-friendly effect can be achieved.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a coking chemical production area VOCs purifies environmental protection recovery system, including compound deprivation equipment, circulating equipment and incineration equipment; the chemical production area can produce the tail gas containing VOCs and is respectively connected with the compound removing equipment and the burning equipment through the circulating equipment.
Further limit is as follows: the compound removing equipment comprises a naphthalene washing tower, an acid washing tower and an alkali washing tower; the inlet of the naphthalene washing tower is connected with a tail gas outlet of each production device in a blast cooling area, and the outlet of the naphthalene washing tower is connected with the inlet of an alkaline washing tower; the outlet of the alkaline tower is connected with incineration equipment; the inlet of the acid washing tower is connected with the outlets of the tail gas of the crystallization tank, the tail gas of the full flow tank, the tail gas of the regeneration tower, the tail gas of the second-floor desulfurization tower and the tail gas of the reaction tank, and the outlet of the acid washing tower is connected with the inlet of the alkaline washing tower.
Further limit is as follows: the incineration equipment is a coke oven; the outlet of the alkaline washing tower is divided into two paths, wherein one path is provided with a coke side regulating valve, and an outlet pipeline of the coke side regulating valve is divided into two paths and is introduced into coke side inlets on the left side and the right side of the coke oven; the other path is provided with a machine side regulating valve, and an outlet pipeline of the machine side regulating valve is divided into two paths and is introduced into machine side inlets on the left side and the right side of the coke oven; the coke side regulating valve is matched with a coke side shutter of the coke oven to open and close; the machine side regulating valve is matched with the machine side shutter of the coke oven to open and close.
Preferably: the outlet of the alkaline washing tower is connected with each inlet on the machine side and each inlet on the coke side of the coke oven through air pipes additionally provided with flame arresters and valves.
Beneficial effects of the utility model
The utility model discloses to coking chemical production area all contain VOCs's gas and carry out concentrated processing after handling respectively, carry out the pertinence earlier to the tail gas that different regions produced and handle, later gather and wash with alkaline and the burning, the utility model discloses to coking chemical production area contain VOCs's tail gas treatment and propose rigorous process flow of mutually supporting for the first time, filled the technical gap to a certain extent.
Drawings
Fig. 1 is a process flow diagram of the present invention, wherein:
1. washing a naphthalene tower; 2. an acid washing tower; 3. an alkaline washing tower; 4. a coke oven.
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings.
Examples
The utility model provides a coking chemical production area VOCs purification environmental protection recovery system, which comprises a compound removing device, a circulating device and an incineration device; the chemical production area can produce the tail gas containing VOCs and is respectively connected with the compound removing equipment and the burning equipment through the circulating equipment.
Specifically, in this embodiment, the compound removal device includes a naphthalene washing tower 1, an acid washing tower 2, and an alkali washing tower 3; an inlet of the naphthalene washing tower 1 is connected with a tail gas outlet (mainly containing naphthalene tail gas) of each production device in a blast cooling area, and an outlet of the naphthalene washing tower 1 is connected with an inlet of the alkaline washing tower 3; the outlet of the alkaline tower 3 is connected with incineration equipment; the inlet of the acid washing tower 2 is connected with the outlets of the tail gas of the crystallization tank, the tail gas of the full flow tank, the tail gas of the regeneration tower, the tail gas of the second-floor desulfurization tower and the tail gas of the reaction tank, and the outlet of the acid washing tower 2 is connected with the inlet of the alkaline washing tower 3.
In the embodiment, the incineration equipment is a coke oven 4, the outlet of an alkaline washing tower 3 is divided into two paths, wherein one path is provided with a coke side regulating valve, and the outlet pipeline of the coke side regulating valve is divided into two paths which are led into the coke side inlets on the left side and the right side of the coke oven 4; the other path is provided with a machine side regulating valve, and an outlet pipeline of the machine side regulating valve is divided into two paths and is introduced into machine side inlets on the left side and the right side of the coke oven 4; the coke side regulating valve is matched with a coke side shutter of the coke oven 4 to open and close; the machine side regulating valve is matched with the machine side shutter of the coke oven 4 for opening and closing.
In this embodiment, the outlet of the caustic tower 3 is connected to the inlets on the coke oven side and the inlets on the machine side of the coke oven 4 by air pipes equipped with flame arresters and valves.
The processing flow comprises the following steps:
1) introducing the tail gas containing naphthalene in a cooling zone in a chemical production zone into a naphthalene washing tower 1 for naphthalene washing treatment, wherein a naphthalene washing solution in the naphthalene washing tower 1 is a water washing solution, and introducing the tail gas into an alkaline washing tower 3 for alkaline washing treatment after the naphthalene washing treatment; the alkaline washing solution in the alkaline washing tower 3 is NaOH solution with PH 8-9.
2) Introducing alkaline tail gas in a chemical production area, including tail gas of a crystallization tank, tail gas of a full-flow tank, tail gas of a regeneration tower, tail gas of a second-floor desulfurization and tail gas of a reaction tank into an acid washing tower 2 with acidity of 3% -4% by using a fan for acid washing treatment, wherein the acid washing solution is common thiamine mother liquor in a thiamine working section in a coking plant; then introducing the water into the same alkaline washing tower 3 as the step 1) for alkaline washing treatment;
3) collecting the gas treated in the steps 1) and 2) and feeding the gas into a coke oven 4 for combustion.
The combustion process is as follows: all tail gas discharged from the outlet of the alkaline tower 3 passes through a main pipeline of DN600, passes through a coke furnace tube gallery frame and a coke furnace second-layer platform, finally enters a basement, is added into the air of a combustion system of the coke furnace 4, and is divided into two paths of DN600 pipelines in the basement tail gas pipeline; one path is connected with a coke side shutter and the other path is connected with a machine side shutter; two DN600 adjusting valves are linked with the waste gas of the coke oven in a reversing way and further matched with the synchronous opening of the shutter when the shutter enters air, and each DN600 main pipe is divided into two DN400 pipelines which are respectively introduced into the left side and the right side of the coke oven.
The two air pipes on the machine side and the coke side are transversely arranged and are arranged on the inner side of the upright post on the side of the basement of the coke oven, so that the air pipes do not conflict with the waste gas circulation pipeline. The air pipe is provided with branch pipes, the branch pipes are DN80 pipelines, flame arresters and valves are additionally arranged, and the branch pipes are connected with each shutter.
Final conversion of VOCs to CO2And H2And O, no VOCs component exists in the discharged tail gas, so that the VOCs are continuously discharged up to the standard.
Claims (3)
1. The system for purifying and environmentally recycling VOCs in the coking and chemical production area is characterized by comprising compound removing equipment, circulating equipment and incineration equipment; the chemical production area can generate tail gas containing VOCs and is respectively connected with the compound removal equipment and the incineration equipment through circulation equipment; the compound removing equipment comprises a naphthalene washing tower (1), an acid washing tower (2) and an alkali washing tower (3); the inlet of the naphthalene washing tower (1) is connected with a tail gas outlet of each production device in a blast cooling area, and the outlet of the naphthalene washing tower (1) is connected with the inlet of the alkaline washing tower (3); the outlet of the alkaline tower (3) is connected with incineration equipment; the inlet of the acid washing tower (2) is respectively connected with the outlets of the tail gas of the crystallization tank, the tail gas of the full-flow tank, the tail gas of the regeneration tower, the tail gas of the second-floor desulfurization tower and the tail gas of the reaction tank, and the outlet of the acid washing tower (2) is connected with the inlet of the alkaline washing tower (3).
2. The environmentally-friendly recovery system for purifying VOCs in coking and chemical production areas according to claim 1, which is characterized in that: the incineration equipment is a coke oven (4); the outlet of the alkaline washing tower (3) is divided into two paths, wherein one path is provided with a coke side regulating valve, and the outlet pipeline of the coke side regulating valve is divided into two paths and is introduced into the coke side inlets on the left side and the right side of the coke oven (4); the other path is provided with a machine side regulating valve, and an outlet pipeline of the machine side regulating valve is divided into two paths and is introduced into machine side inlets on the left side and the right side of the coke oven (4); the coke side regulating valve is matched with a coke side shutter of the coke oven (4) to open and close; the machine side regulating valve is matched with a machine side shutter of the coke oven (4) to open and close.
3. The environmentally-friendly recovery system for purifying VOCs in coking and chemical production areas according to claim 2, characterized in that: the outlet of the alkaline washing tower (3) is connected with each inlet on the machine side and each inlet on the coke side of the coke oven (4) through air pipes additionally provided with flame arresters and valves.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922211065.1U CN211864512U (en) | 2019-12-11 | 2019-12-11 | Coking chemical production area VOCs purifies environmental protection recovery system |
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| CN201922211065.1U CN211864512U (en) | 2019-12-11 | 2019-12-11 | Coking chemical production area VOCs purifies environmental protection recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110841461A (en) * | 2019-12-11 | 2020-02-28 | 陕西黑猫焦化股份有限公司 | Coking chemical production area VOCs purification environment-friendly recovery process and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110841461A (en) * | 2019-12-11 | 2020-02-28 | 陕西黑猫焦化股份有限公司 | Coking chemical production area VOCs purification environment-friendly recovery process and system |
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