CN112495155A - Process system for treating toxic and harmful tail gas by dry chemical filtering device - Google Patents

Process system for treating toxic and harmful tail gas by dry chemical filtering device Download PDF

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Publication number
CN112495155A
CN112495155A CN202110165945.9A CN202110165945A CN112495155A CN 112495155 A CN112495155 A CN 112495155A CN 202110165945 A CN202110165945 A CN 202110165945A CN 112495155 A CN112495155 A CN 112495155A
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adsorption
auxiliary
barrel
main
valve
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CN112495155B (en
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杨少康
王成林
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Ruiqi Shanghai Environmental Engineering Technology Co ltd
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Ruiqi Shanghai Environmental Engineering Technology Co ltd
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    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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Abstract

The invention discloses a process system for treating poisonous and harmful tail gas by a dry chemical filtering device, which comprises a main adsorption system and an auxiliary adsorption system, wherein the main adsorption system filters process waste gas sequentially through an inlet, an inlet pipeline, an automatic control valve, a quick joint, a manual stop valve and a main adsorption barrel, the automatic control valve is fixedly connected with one side of the quick joint, the other side of the quick joint is fixedly connected with one side of the manual stop valve, the other side of the manual stop valve is connected with the inlet end of the main adsorption barrel, the process waste gas enters an outlet pipeline through the outlet end of the main adsorption barrel after being filtered by the main adsorption barrel, the outlet pipeline is sequentially connected with the manual stop valve, a quick connection clamp, a concentration detection port and the automatic stop valve, and the process of replacing the adsorption barrel can be realized by the design of the invention, ensure safe and reliable, avoid the risk that the poisonous and harmful waste gas of untreated escapes in the change process.

Description

Process system for treating toxic and harmful tail gas by dry chemical filtering device
Technical Field
The invention relates to the technical field of process tail gas treatment, in particular to a process system for treating toxic and harmful tail gas by using a dry chemical filtering device.
Background
A typical sorbent cartridge is configured with valves for the inlet and outlet ports. In actual use, the common adsorption cylinder is not suitable for treating toxic and harmful gases such as arsine. When the sorbent in the drum is consumed, the fully consumed sorbent drum needs to be replaced with a drum containing new sorbent. During the replacement process, a part of untreated toxic waste gas remains in the pipeline. Safety accidents may result.
Meanwhile, in the replacement process, if the spare adsorption barrel is not arranged, the line needs to be stopped for replacement. The continuous production of the normal process is influenced.
Due to the lifetime of the adsorbent, it needs to be replaced in a timely manner. The conventional adsorption barrel system can only replace the adsorption barrel in advance. This easily results in waste of the adsorbent. Otherwise, the exhaust gas is easily subjected to complete waste material consumption and cannot be purified, so that safety accidents are caused.
Disclosure of Invention
The invention aims to provide a process system for treating poisonous and harmful tail gas by a dry chemical filtering device, which solves the problems in the prior art, can ensure safety and reliability in the process of replacing an adsorption barrel, avoids the risk of escape of untreated poisonous and harmful waste gas in the replacement process, and can completely realize online replacement and maintenance by adopting the design of a double adsorption main body on the premise of ensuring that the waste gas is completely and effectively purified and treated. The operation management of the production line is greatly facilitated.
In order to achieve the purpose, the invention provides the following technical scheme: a process system for treating poisonous and harmful tail gas by a dry chemical filtering device comprises a main adsorption system and an auxiliary adsorption system, wherein the main adsorption system sequentially filters process waste gas through an inlet, an inlet pipeline, an automatic control valve, a quick joint, a manual stop valve and a main adsorption barrel, the automatic control valve is fixedly connected with one side of the quick joint, the other side of the quick joint is fixedly connected with one side of the manual stop valve, the other side of the manual stop valve is connected with the inlet end of the main adsorption barrel, the process waste gas is filtered by the main adsorption barrel and then enters the outlet pipeline through the outlet end of the main adsorption barrel, a third manual stop valve, a quick connection clamp, a concentration detection port and a third automatic stop valve are sequentially connected onto the outlet pipeline, the concentration detection port is connected with a concentration detection sensor, and the rear end of the third automatic stop valve is connected with the auxiliary adsorption system, supplementary adsorption system loops through manual trip valve of second, second quick-operation joint and supplementary absorption bucket with process waste gas and adsorbs, and for guaranteeing adsorption system's normal operating, main adsorption system and supplementary adsorption system can both design into two adsorption systems, are convenient for change, and two main adsorption system parallel connection are on the pipeline, and two supplementary adsorption system parallel connection each other are convenient for change on line.
Preferably, the main adsorption barrel comprises an inner jacket and an outer jacket, a jacket space is arranged between the inner jacket and the outer jacket, the inner jacket is provided with an adsorption bed, the adsorption bed is mounted in the middle of the inner jacket, the lower end of the adsorption bed is connected with a lower porous plate, the lower end of the lower porous plate is provided with a bottom space, one side of the bottom space is provided with a hollow structure, and the upper end of the adsorption bed is provided with an upper porous plate.
Preferably, the auxiliary adsorption bucket comprises a second adsorption bed, and porous plates are respectively arranged at the upper end and the lower end of the second adsorption bed.
Preferably, an auxiliary pipeline is arranged between the inlet pipeline and the outlet pipeline, one side of the auxiliary pipeline is fixedly connected with the outlet pipeline, the other side of the auxiliary pipeline is fixedly connected with the inlet pipeline through a three-way valve, and one side of the auxiliary pipeline is arranged on the outlet pipeline at the rear end of the concentration detection port.
Preferably, be provided with the device that sweeps on the main adsorption system, the device that sweeps includes first purge valve, second purge valve and sweep gas, first purge valve connect in on the import pipeline, the second purge valve connects on the auxiliary line, the device that sweeps is installed in three-way valve rear end, sweep gas gets into through first purge valve and second purge valve respectively import pipeline and auxiliary line.
Preferably, the purge gas is an inert gas.
Preferably, the adsorption bed is circulation multistage adsorption apparatus structure, circulation multistage adsorption apparatus structure includes one-level absorption, second grade absorption and tertiary absorption, one-level adsorption install in the perforated plate upper end down, the one-level is adsorbed including the arc collecting plate, arc collecting plate rear end sets up the smoke and dust adsorption net, the one-level is adsorbed the rear end and is provided with the second grade and adsorbs, the second grade is adsorbed including the adsorption tank, install adsorbing material in the adsorption tank, adsorbing material pile up in the adsorption tank, the smoke and dust adsorption net is installed to the adsorption tank lower extreme, tertiary absorption includes U type adsorption tube, be provided with adsorbing material in the U type adsorption tube.
Preferably, the adsorption material comprises the following components by mass: 1-5 parts of potassium permanganate, 2-8 parts of soluble copper salt, 2-5 parts of soluble zinc salt, 1-6 parts of soluble silver salt and the balance of porous silicon dioxide carrier.
Preferably, the average pore diameter of the porous silica carrier is 50-450 nm, and the specific surface area is 300-500 m2The specific pore volume is 0.3 to 0.6 ml/g.
Preferably, the operation method of the process system for treating the poisonous and harmful tail gas by the dry chemical filtering device comprises the following steps:
s1: the process tail gas enters an inlet pipeline through an inlet, the process waste gas enters a main adsorption system after passing through an automatic control valve, a quick coupling and a manual cut-off valve in sequence, the process waste gas enters the bottom space of an adsorption bed from the bottom through a hollow structure through a jacket space of the main adsorption system, the process waste gas enters the adsorption bed through a lower porous plate, toxic and harmful components in the process waste gas are purified by an adsorbent in the adsorption bed and then pass through an outlet pipeline, a second manual cut-off valve, a second quick coupling, a concentration detection sensor and the automatic cut-off valve in sequence and then reach an auxiliary adsorption system;
s2: the auxiliary adsorption barrels on the auxiliary adsorption system are designed into two, one is in a use state, the other is in a standby state, process waste gas passes through an outlet pipeline, a second manual cut-off valve and a second quick joint and passes through porous plates arranged at the upper end and the lower end of a second adsorption bed to be safely discharged out of the system, the other auxiliary adsorption barrel is used as a standby auxiliary adsorption system, and valves at the front end and the rear end of the auxiliary adsorption barrel are in a closed state;
s3: when the concentration detection sensor detects that the concentration of the process waste gas treated by the main adsorption system exceeds a safe value, the process system considers that the adsorption material in the main adsorption barrel is completely consumed, the concentration detection sensor gives an electric signal to the three-way valve, so that the process waste gas is not discharged into the main adsorption barrel any more, but is directly discharged to an inlet of the auxiliary adsorption system through an auxiliary pipeline, the process waste gas is temporarily purified by using an adsorbent in the auxiliary adsorption barrel, and meanwhile, the system is controlled to prompt an operator to replace the main adsorption barrel through alarming;
s4: when the main adsorption barrel of the main adsorption system is replaced, because toxic and harmful components can be remained in the inlet pipeline and the main adsorption barrel, before the main adsorption barrel is replaced, the remained harmful components are swept by the sweeping gas of the sweeping device, and the sweeping gas adopts inert gas;
s5: after sweeping, the main adsorption barrel filled with new adsorption materials replaces the main adsorption barrel which is completely consumed, the process waste gas is guided into the main adsorption barrel through the control system to be purified, and the adsorption materials in the auxiliary adsorption system can be replaced after the main adsorption barrel is replaced.
Compared with the prior art, the invention has the beneficial effects that:
(1) can ensure safety and reliability in the process of replacing the adsorption barrel, avoid the risk of escape of untreated toxic and harmful waste gas in the process of replacing,
(2) the design of the auxiliary adsorption system is adopted, so that the waste gas is prevented from being wasted by the waste of a part of unconsumed filter material due to the need of ensuring the safety in the adsorption and purification process on the premise of ensuring the complete effective purification treatment of the waste gas.
(3) The design of two main adsorption systems can realize online change and maintenance completely, need not to produce the change that the line could carry out main absorption bucket and supplementary absorption bucket after the line is shut down to the technology, has greatly made things convenient for the operation management of production line.
Drawings
FIG. 1 is a schematic view of the structural principle of the treatment process system of the dry chemical filter device of the present invention.
FIG. 2 is a schematic view of the structure of the adsorption bed of the present invention.
FIG. 3 is a schematic structural diagram of embodiment 4 of the present invention
Reference numerals: 1. a main adsorption system, 2, an auxiliary adsorption system, 3, an inlet, 4, an inlet pipeline, 5, an automatic control valve, 6, a quick joint, 7, a manual cut-off valve, 8, a main adsorption barrel, 9, an outlet pipeline, 10, a third manual cut-off valve, 11, a quick connection clamp, 12, a concentration detection port, 14, a concentration detection sensor, 15, a second manual cut-off valve, 16, a second quick joint, 17, an auxiliary adsorption barrel, 18, an inner jacket, 19, an outer jacket, 20, a jacket space, 21, an adsorption bed, 22, a lower porous plate, 23, a bottom space, 24, a hollow structure, 25, an upper porous plate, 26, a second adsorption bed, 27, a porous plate, 28, an auxiliary pipeline, 29, a three-way valve, 30, a purging device, 31, a first purging valve, 32, a second purging valve, 33, a purging gas, 34, a primary adsorption, 35, a secondary adsorption, 36. three-stage adsorption, 37, an arc-shaped collecting plate, 38, a smoke dust adsorption net, 39, an adsorption box, 40, an adsorption material, 41, a third automatic cutoff valve, 42 and a U-shaped adsorption pipe.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Example 1:
as shown in fig. 1, a process system for treating poisonous and harmful tail gas by a dry chemical filtering device comprises a main adsorption system 1 and an auxiliary adsorption system 2, wherein the main adsorption system 1 filters process waste gas sequentially through an inlet 3, an inlet pipeline 4, an automatic control valve 5, a quick coupling 6, a manual cut-off valve 7 and a main adsorption barrel 8, the automatic control valve 5 is fixedly connected with one side of the quick coupling 6, the other side of the quick coupling 6 is fixedly connected with one side of the manual cut-off valve 7, the other side of the manual cut-off valve 7 is connected with the inlet end of the main adsorption barrel 8, the process waste gas is filtered by the main adsorption barrel 8 and then enters an outlet pipeline 9 through the outlet end of the main adsorption barrel 8, the outlet pipeline 9 is sequentially connected with a third manual cut-off valve 10, a quick connection clamp 11, a concentration detection port 12 and a third automatic cut-off valve 41, be connected with concentration detection sensor 14 on the concentration detection port 12, the 41 rear ends of third automatic cutout valve are connected supplementary adsorption system 2, supplementary adsorption system 2 loops through second manual cutout valve 15, second quick-operation joint 16 and supplementary adsorption bucket 17 with technology waste gas and adsorbs, and for guaranteeing adsorption system's normal operating, main adsorption system 1 and supplementary adsorption system 2 can both be designed into two adsorption systems, are convenient for change, and two main adsorption system 1 parallel connection are on the pipeline, and two supplementary adsorption system 2 mutual parallel connection, the online change of being convenient for.
The main adsorption barrel 8 comprises an inner jacket 18 and an outer jacket 19, a jacket space 20 is arranged between the inner jacket 18 and the outer jacket 19, the inner jacket 18 is provided with an adsorption bed 21, the adsorption bed 21 is installed in the middle of the inner jacket 18, the lower end of the adsorption bed 21 is connected with a lower porous plate 22, the lower end of the lower porous plate 22 is provided with a bottom space 23, one side of the bottom space 23 is provided with a hollow structure 24, and the upper end of the adsorption bed 21 is provided with an upper porous plate 25.
The auxiliary adsorption bucket 17 includes a second adsorption bed 26, and porous plates 27 are provided at upper and lower ends of the second adsorption bed 26, respectively.
An auxiliary pipeline 28 is arranged between the inlet pipeline 4 and the outlet pipeline 9, one side of the auxiliary pipeline 28 is fixedly connected with the outlet pipeline 9, the other side of the auxiliary pipeline 28 is fixedly connected with the inlet pipeline 4 through a three-way valve 29, and one side of the auxiliary pipeline 28 is arranged on the outlet pipeline 9 at the rear end of the concentration detection port 12.
A purging device 30 is arranged on the main adsorption system 1, the purging device 30 comprises a first purging valve 31, a second purging valve 32 and a purging gas 33, the first purging valve 31 is connected to the inlet pipeline 9, the second purging valve 32 is connected to the auxiliary pipeline 28, the purging device 30 is arranged at the rear end of a three-way valve 29, and the purging gas 33 enters the inlet pipeline 4 and the auxiliary pipeline 9 through the first purging valve 31 and the second purging valve 32 respectively; the purge gas 33 is an inert gas.
As shown in fig. 2, the adsorption bed 21 is a circulating multi-stage adsorption mechanism, the circulating multi-stage adsorption mechanism includes a first-stage adsorption 34, a second-stage adsorption 35 and a third-stage adsorption 36, the first-stage adsorption 34 is installed on the upper end of the lower porous plate 22, the first-stage adsorption 34 includes an arc collecting plate 37, a smoke adsorption net 38 is arranged at the rear end of the arc collecting plate 37, the second-stage adsorption 35 is arranged at the rear end of the first-stage adsorption 34, the second-stage adsorption 35 includes an adsorption box 39, an adsorption material 40 is installed in the adsorption box 39, the adsorption material 40 is stacked in the adsorption box 39, the smoke adsorption net 38 is installed at the lower end of the adsorption box 39, the third-stage adsorption 36 includes a U-shaped adsorption pipe 42, and an adsorption material.
The adsorption material 40 comprises the following components by mass: 1 part of potassium permanganate, 2 parts of soluble copper salt, 2 parts of soluble zinc salt, 1 part of soluble silver salt and the balance of porous silicon dioxide carrier.
The average pore diameter of the porous silica carrier is 50nm, and the specific surface area is 300m2The specific pore volume is 0.3 ml/g.
An operation method of a process system for treating poisonous and harmful tail gas by a dry-type chemical filtering device comprises the following steps:
s1: the process waste gas enters an inlet pipeline 4 through an inlet 3, the process waste gas enters a main adsorption system 1 after passing through an automatic control valve 5, a quick connector 6 and a manual cut-off valve 7 in sequence, the process waste gas enters a jacket space 20 of the main adsorption system 1 and enters a bottom space 23 of an adsorption bed 21 from the bottom through a hollow structure 24, the process waste gas enters the adsorption bed 21 through a lower porous plate 22, toxic and harmful components in the process waste gas are purified by an adsorption material 40 in the adsorption bed 21 and then pass through an outlet pipeline 9, a third manual cut-off valve 10 and a quick connection clamp 11 in sequence, and a concentration detection sensor 14 reaches an auxiliary adsorption system 2;
s2: the auxiliary adsorption barrels 17 on the auxiliary adsorption system 2 are designed into two, one is in a use state, the other is in a standby state, the process waste gas passes through the outlet pipeline 9, the second manual cut-off valve 15 and the second quick joint 16, and is safely discharged out of the system through the porous plates 27 arranged at the upper end and the lower end of the second adsorption bed 26, meanwhile, the other auxiliary adsorption barrel is used as a standby auxiliary adsorption system, and valves at the front end and the rear end of the auxiliary adsorption barrel are in a closed state;
s3: when the concentration detection sensor 14 detects that the concentration of the process waste gas treated by the main adsorption system 1 exceeds a safe value, the process system considers that the adsorption material in the main adsorption barrel 8 is completely consumed, the concentration detection sensor 14 sends an electric signal to the three-way valve 29, so that the process waste gas is not discharged into the main adsorption barrel 8, but is directly discharged to the inlet of the auxiliary adsorption system 2 through the auxiliary pipeline 28, the process waste gas is temporarily purified by using the adsorption material in the auxiliary adsorption barrel 17, and meanwhile, the system is controlled to prompt an operator to replace the main adsorption barrel 8 through an alarm;
s4: when the main adsorption barrel 8 of the main adsorption system 1 is replaced, since toxic and harmful components can remain in the inlet pipeline 4 and the main adsorption barrel 8, before the main adsorption barrel 8 is replaced, the remaining harmful components are purged by the purge gas 33 of the purging device 30, and the purge gas 33 is inert gas;
s5: after purging is completed, the main adsorption barrel 8 filled with new adsorption material 40 replaces the main adsorption barrel 8 which is completely consumed, the process waste gas is guided into the main adsorption barrel 8 through the control system to be purified, and the adsorption material 40 in the auxiliary adsorption system 2 can be replaced after the main adsorption barrel 8 is replaced.
Example 2:
a process system for treating poisonous and harmful tail gas by a dry chemical filtering device comprises a main adsorption system 1 and an auxiliary adsorption system 2, wherein the main adsorption system 1 filters process waste gas sequentially through an inlet 3, an inlet pipeline 4, an automatic control valve 5, a quick joint 6, a manual cut-off valve 7 and a main adsorption barrel 8, the automatic control valve 5 is fixedly connected with one side of the quick joint 6, the other side of the quick joint 6 is fixedly connected with one side of the manual cut-off valve 7, the other side of the manual cut-off valve 7 is connected with the inlet end of the main adsorption barrel 8, the process waste gas is filtered by the main adsorption barrel 8 and then enters an outlet pipeline 9 through the outlet end of the main adsorption barrel 8, the outlet pipeline 9 is sequentially connected with a third manual cut-off valve 10, a quick connection clamp 11, a concentration detection port 12 and a third automatic cut-off valve 41, be connected with concentration detection sensor 14 on the concentration detection port 12, the 41 rear ends of third automatic cutout valve are connected supplementary adsorption system 2, supplementary adsorption system 2 loops through second manual cutout valve 15, second quick-operation joint 16 and supplementary adsorption bucket 17 with technology waste gas and adsorbs, and for guaranteeing adsorption system's normal operating, main adsorption system 1 and supplementary adsorption system 2 can both be designed into two adsorption systems, are convenient for change, and two main adsorption system 1 parallel connection are on the pipeline, and two supplementary adsorption system 2 mutual parallel connection, the online change of being convenient for.
The main adsorption barrel 8 comprises an inner jacket 18 and an outer jacket 19, a jacket space 20 is arranged between the inner jacket 18 and the outer jacket 19, the inner jacket 18 is provided with an adsorption bed 21, the adsorption bed 21 is installed in the middle of the inner jacket 18, the lower end of the adsorption bed 21 is connected with a lower porous plate 22, the lower end of the lower porous plate 22 is provided with a bottom space 23, one side of the bottom space 23 is provided with a hollow structure 24, and the upper end of the adsorption bed 21 is provided with an upper porous plate 25.
The auxiliary adsorption bucket 17 includes a second adsorption bed 26, and porous plates 27 are provided at upper and lower ends of the second adsorption bed 26, respectively.
An auxiliary pipeline 28 is arranged between the inlet pipeline 4 and the outlet pipeline 9, one side of the auxiliary pipeline 28 is fixedly connected with the outlet pipeline 9, the other side of the auxiliary pipeline 28 is fixedly connected with the inlet pipeline 4 through a three-way valve 29, and one side of the auxiliary pipeline 28 is arranged on the outlet pipeline 9 at the rear end of the concentration detection port 12.
A purging device 30 is arranged on the main adsorption system 1, the purging device 30 comprises a first purging valve 31, a second purging valve 32 and a purging gas 33, the first purging valve 31 is connected to the inlet pipeline 9, the second purging valve 32 is connected to the auxiliary pipeline 28, the purging device 30 is arranged at the rear end of a three-way valve 29, and the purging gas 33 enters the inlet pipeline 4 and the auxiliary pipeline 9 through the first purging valve 31 and the second purging valve 32 respectively; the purge gas 33 is an inert gas.
Adsorbent bed 21 is circulation multistage adsorption apparatus structure, circulation multistage adsorption apparatus structure includes that one-level adsorbs 34, second grade adsorbs 35 and tertiary absorption 36, one-level adsorb 34 install in perforated plate 22 upper end down, one-level adsorb 34 including arc collecting plate 37, arc collecting plate 37 rear end sets up smoke and dust adsorption net 38, 34 rear end is adsorbed to one-level is provided with second grade and adsorbs 35, second grade adsorbs 35 including adsorption tank 39, install adsorption material 40 in the adsorption tank 39, adsorption material 40 pile up in the adsorption tank 39, smoke and dust adsorption net 38 is installed to adsorption tank 39 lower extreme, tertiary absorption 36 includes U type adsorption tube 42, be provided with adsorption material 40 in the U type adsorption tube 42.
The adsorption material 40 comprises the following components by mass: 5 parts of potassium permanganate, 8 parts of soluble copper salt, 5 parts of soluble zinc salt, 6 parts of soluble silver salt and the balance of porous silicon dioxide carrier.
The average pore diameter of the porous silica carrier is 450nm, and the specific surface area is 500m2The specific pore volume is 0.6 ml/g.
An operation method of a process system for treating poisonous and harmful tail gas by a dry-type chemical filtering device comprises the following steps:
s1: the process waste gas enters an inlet pipeline 4 through an inlet 3, the process waste gas enters a main adsorption system 1 after passing through an automatic control valve 5, a quick connector 6 and a manual cut-off valve 7 in sequence, the process waste gas enters a jacket space 20 of the main adsorption system 1 and enters a bottom space 23 of an adsorption bed 21 from the bottom through a hollow structure 24, the process waste gas enters the adsorption bed 21 through a lower porous plate 22, toxic and harmful components in the process waste gas are purified by an adsorption material 40 in the adsorption bed 21 and then pass through an outlet pipeline 9, a third manual cut-off valve 10 and a quick connection clamp 11 in sequence, and a concentration detection sensor 14 reaches an auxiliary adsorption system 2;
s2: the auxiliary adsorption barrels 17 on the auxiliary adsorption system 2 are designed into two, one is in a use state, the other is in a standby state, the process waste gas passes through the outlet pipeline 9, the second manual cut-off valve 15 and the second quick joint 16, and is safely discharged out of the system through the porous plates 27 arranged at the upper end and the lower end of the second adsorption bed 26, meanwhile, the other auxiliary adsorption barrel is used as a standby auxiliary adsorption system, and valves at the front end and the rear end of the auxiliary adsorption barrel are in a closed state;
s3: when the concentration detection sensor 14 detects that the concentration of the process waste gas treated by the main adsorption system 1 exceeds a safe value, the process system considers that the adsorption material in the main adsorption barrel 8 is completely consumed, the concentration detection sensor 14 sends an electric signal to the three-way valve 29, so that the process waste gas is not discharged into the main adsorption barrel 8, but is directly discharged to the inlet of the auxiliary adsorption system 2 through the auxiliary pipeline 28, the process waste gas is temporarily purified by using the adsorption material in the auxiliary adsorption barrel 17, and meanwhile, the system is controlled to prompt an operator to replace the main adsorption barrel 8 through an alarm;
s4: when the main adsorption barrel 8 of the main adsorption system 1 is replaced, since toxic and harmful components can remain in the inlet pipeline 4 and the main adsorption barrel 8, before the main adsorption barrel 8 is replaced, the remaining harmful components are purged by the purge gas 33 of the purging device 30, and the purge gas 33 is inert gas;
s5: after purging is completed, the main adsorption barrel 8 filled with new adsorption material 40 replaces the main adsorption barrel 8 which is completely consumed, the process waste gas is guided into the main adsorption barrel 8 through the control system to be purified, and the adsorption material 40 in the auxiliary adsorption system 2 can be replaced after the main adsorption barrel 8 is replaced.
Example 3:
a process system for treating poisonous and harmful tail gas by a dry chemical filtering device comprises a main adsorption system 1 and an auxiliary adsorption system 2, wherein the main adsorption system 1 filters process waste gas sequentially through an inlet 3, an inlet pipeline 4, an automatic control valve 5, a quick joint 6, a manual cut-off valve 7 and a main adsorption barrel 8, the automatic control valve 5 is fixedly connected with one side of the quick joint 6, the other side of the quick joint 6 is fixedly connected with one side of the manual cut-off valve 7, the other side of the manual cut-off valve 7 is connected with the inlet end of the main adsorption barrel 8, the process waste gas is filtered by the main adsorption barrel 8 and then enters an outlet pipeline 9 through the outlet end of the main adsorption barrel 8, the outlet pipeline 9 is sequentially connected with a third manual cut-off valve 10, a quick connection clamp 11, a concentration detection port 12 and a third automatic cut-off valve 41, be connected with concentration detection sensor 14 on the concentration detection port 12, the 41 rear ends of third automatic cutout valve are connected supplementary adsorption system 2, supplementary adsorption system 2 loops through second manual cutout valve 15, second quick-operation joint 16 and supplementary adsorption bucket 17 with technology waste gas and adsorbs, and for guaranteeing adsorption system's normal operating, main adsorption system 1 and supplementary adsorption system 2 can both be designed into two adsorption systems, are convenient for change, and two main adsorption system 1 parallel connection are on the pipeline, and two supplementary adsorption system 2 mutual parallel connection, the online change of being convenient for.
The main adsorption barrel 8 comprises an inner jacket 18 and an outer jacket 19, a jacket space 20 is arranged between the inner jacket 18 and the outer jacket 19, the inner jacket 18 is provided with an adsorption bed 21, the adsorption bed 21 is installed in the middle of the inner jacket 18, the lower end of the adsorption bed 21 is connected with a lower porous plate 22, the lower end of the lower porous plate 22 is provided with a bottom space 23, one side of the bottom space 23 is provided with a hollow structure 24, and the upper end of the adsorption bed 21 is provided with an upper porous plate 25.
The auxiliary adsorption bucket 17 includes a second adsorption bed 26, and porous plates 27 are provided at upper and lower ends of the second adsorption bed 26, respectively.
An auxiliary pipeline 28 is arranged between the inlet pipeline 4 and the outlet pipeline 9, one side of the auxiliary pipeline 28 is fixedly connected with the outlet pipeline 9, the other side of the auxiliary pipeline 28 is fixedly connected with the inlet pipeline 4 through a three-way valve 29, and one side of the auxiliary pipeline 28 is arranged on the outlet pipeline 9 at the rear end of the concentration detection port 12.
A purging device 30 is arranged on the main adsorption system 1, the purging device 30 comprises a first purging valve 31, a second purging valve 32 and a purging gas 33, the first purging valve 31 is connected to the inlet pipeline 9, the second purging valve 32 is connected to the auxiliary pipeline 28, the purging device 30 is arranged at the rear end of a three-way valve 29, and the purging gas 33 enters the inlet pipeline 4 and the auxiliary pipeline 9 through the first purging valve 31 and the second purging valve 32 respectively; the purge gas 33 is an inert gas.
Adsorbent bed 21 is circulation multistage adsorption apparatus structure, circulation multistage adsorption apparatus structure includes that one-level adsorbs 34, second grade adsorbs 35 and tertiary absorption 36, one-level adsorb 34 install in perforated plate 22 upper end down, one-level adsorb 34 including arc collecting plate 37, arc collecting plate 37 rear end sets up smoke and dust adsorption net 38, 34 rear end is adsorbed to one-level is provided with second grade and adsorbs 35, second grade adsorbs 35 including adsorption tank 39, install adsorption material 40 in the adsorption tank 39, adsorption material 40 pile up in the adsorption tank 39, smoke and dust adsorption net 38 is installed to adsorption tank 39 lower extreme, tertiary absorption 36 includes U type adsorption tube 42, be provided with adsorption material 40 in the U type adsorption tube 42.
The adsorption material 40 comprises the following components by mass: 3 parts of potassium permanganate, 5 parts of soluble copper salt, 3 parts of soluble zinc salt, 4 parts of soluble silver salt and the balance of porous silicon dioxide carrier.
The average pore diameter of the porous silica carrier is 230nm, and the specific surface area is 350m2The specific pore volume is 0.45 ml/g.
An operation method of a process system for treating poisonous and harmful tail gas by a dry-type chemical filtering device comprises the following steps:
s1: the process waste gas enters an inlet pipeline 4 through an inlet 3, sequentially passes through an automatic control valve 5, a quick connector 6 and a manual cut-off valve 7, then enters a main adsorption system 1, passes through a jacket space 20 of the main adsorption system 1, enters a bottom space 23 of an adsorption bed 21 from the bottom through a hollow structure 24, passes through a lower porous plate 22, enters the adsorption bed 21, toxic and harmful components in the process waste gas are purified by an adsorption material 40 in the adsorption bed 21, sequentially passes through an outlet pipeline 9, a third manual cut-off valve 10 and a quick connection clamp 11, and a concentration detection sensor 14 reaches an auxiliary adsorption system 2;
s2: the auxiliary adsorption barrels 17 on the auxiliary adsorption system 2 are designed into two, one is in a use state, the other is in a standby state, the process waste gas passes through the outlet pipeline 9, the second manual cut-off valve 15 and the second quick joint 16, and is safely discharged out of the system through the porous plates 27 arranged at the upper end and the lower end of the second adsorption bed 26, meanwhile, the other auxiliary adsorption barrel is used as a standby auxiliary adsorption system, and valves at the front end and the rear end of the auxiliary adsorption barrel are in a closed state;
s3: when the concentration detection sensor 14 detects that the concentration of the process waste gas treated by the main adsorption system 1 exceeds a safe value, the process system considers that the adsorption material in the main adsorption barrel 8 is completely consumed, the concentration detection sensor 14 sends an electric signal to the three-way valve 29, so that the process waste gas is not discharged into the main adsorption barrel 8, but is directly discharged to the inlet of the auxiliary adsorption system 2 through the auxiliary pipeline 28, the process waste gas is temporarily purified by using the adsorption material in the auxiliary adsorption barrel 17, and meanwhile, the system is controlled to prompt an operator to replace the main adsorption barrel 8 through an alarm;
s4: when the main adsorption barrel 8 of the main adsorption system 1 is replaced, since toxic and harmful components can remain in the inlet pipeline 4 and the main adsorption barrel 8, before the main adsorption barrel 8 is replaced, the remaining harmful components are purged by the purge gas 33 of the purging device 30, and the purge gas 33 is inert gas;
s5: after purging is completed, the main adsorption barrel 8 filled with new adsorption material 40 replaces the main adsorption barrel 8 which is completely consumed, the process waste gas is guided into the main adsorption barrel 8 through the control system to be purified, and the adsorption material 40 in the auxiliary adsorption system 2 can be replaced after the main adsorption barrel 8 is replaced.
Example 4:
as shown in fig. 3, a process system for treating poisonous and harmful tail gas by a dry chemical filtering device comprises two main adsorption systems 1 and two auxiliary adsorption systems 2, wherein the two main adsorption systems 1 have the same operation and structure, the two main adsorption systems 1 are connected in parallel, the two auxiliary adsorption systems 2 have the same operation and structure, the two auxiliary adsorption systems 2 are connected in parallel, the main adsorption system 1 filters process waste gas sequentially through an inlet 3, an inlet pipeline 4, an automatic control valve 5, a quick coupling 6, a manual cut-off valve 7 and a main adsorption barrel 8, the automatic control valve 5 is fixedly connected with one side of the quick coupling 6, the other side of the quick coupling 6 is fixedly connected with one side of the manual cut-off valve 7, the other side of the manual cut-off valve 7 is connected with an inlet end of the main adsorption barrel 8, and the process waste gas is filtered by the main adsorption barrel 8, through 8 exit ends of main adsorption bucket get into outlet pipeline 9, last third manual trip valve 10, quick connect clamp 11, concentration detection port 12 and the third automatic shut-off valve 41 of having connected gradually of outlet pipeline 9, be connected with concentration detection sensor 14 on the concentration detection port 12, the third automatic shut-off valve 41 rear end is connected supplementary adsorption system 2, supplementary adsorption system 2 loops through second manual trip valve 15, second quick-operation joint 16 and supplementary adsorption bucket 17 with technology waste gas and adsorbs, and for guaranteeing adsorption system's normal operating, main adsorption system 1 and supplementary adsorption system 2 can both design into two adsorption systems, are convenient for change, and two main adsorption system 1 parallel connection are on the pipeline, and two supplementary adsorption system 2 parallel connection each other are convenient for change on the line.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions are considered to be within the protective scope of the present invention.

Claims (10)

1. A process system for treating poisonous and harmful tail gas by a dry chemical filtering device is characterized by comprising a main adsorption system and an auxiliary adsorption system, wherein the main adsorption system filters process waste gas sequentially through an inlet, an inlet pipeline, an automatic control valve, a quick joint, a manual stop valve and a main adsorption barrel, the automatic control valve is fixedly connected with one side of the quick joint, the other side of the quick joint is fixedly connected with one side of the manual stop valve, the other side of the manual stop valve is connected with the inlet end of the main adsorption barrel, the process waste gas is filtered by the main adsorption barrel and then enters an outlet pipeline through the outlet end of the main adsorption barrel, a third manual stop valve, a quick connection clamp, a concentration detection port and a third automatic stop valve are sequentially connected onto the outlet pipeline, and the concentration detection port is connected with a concentration detection sensor, the rear end of the third automatic stop valve is connected with the auxiliary adsorption system, and the auxiliary adsorption system sequentially passes through the second manual stop valve, the second quick joint and the auxiliary adsorption barrel to adsorb process waste gas.
2. The system for processing poisonous and harmful tail gas by using a dry-type chemical filtering device according to claim 1, wherein the main adsorption barrel comprises an inner jacket and an outer jacket, a jacket space is formed between the inner jacket and the outer jacket, the inner jacket is provided with an adsorption bed, the adsorption bed is installed at a middle position of the inner jacket, a lower porous plate is connected to the lower end of the adsorption bed, a bottom space is arranged at the lower end of the lower porous plate, a hollow structure is arranged on one side of the bottom space, and an upper porous plate is arranged at the upper end of the adsorption bed.
3. The system for processing poisonous and harmful exhaust gas in a dry chemical filter unit as claimed in claim 1, wherein the auxiliary adsorption barrel comprises a second adsorption bed, and the second adsorption bed is provided with porous plates at upper and lower ends thereof.
4. The system as claimed in claim 1, wherein an auxiliary line is disposed between the inlet line and the outlet line, one side of the auxiliary line is fixedly connected to the outlet line, the other side of the auxiliary line is fixedly connected to the inlet line via a three-way valve, and one side of the auxiliary line is mounted on the outlet line at the rear end of the concentration detection port.
5. The system as claimed in claim 1, wherein the main adsorption system is provided with a purging device, the purging device comprises a first purging valve, a second purging valve and a purging gas, the first purging valve is connected to the inlet line, the second purging valve is connected to the auxiliary line, the purging device is installed at the rear end of the three-way valve, and the purging gas enters the inlet line and the auxiliary line through the first purging valve and the second purging valve respectively.
6. The system as claimed in claim 5, wherein the purge gas is an inert gas.
7. The system of claim 2, wherein the adsorption bed is a cyclic multi-stage adsorption mechanism comprising a first stage adsorption, a second stage adsorption and a third stage adsorption, the first stage adsorption is mounted on the upper end of the lower perforated plate, the first stage adsorption comprises an arc-shaped collecting plate, a smoke adsorption net is arranged at the rear end of the arc-shaped collecting plate, the second stage adsorption is arranged at the rear end of the first stage adsorption, the second stage adsorption comprises an adsorption tank, an adsorption material is mounted in the adsorption tank, the adsorption material is stacked in the adsorption tank, the smoke adsorption net is mounted at the lower end of the adsorption tank, the third stage adsorption comprises a U-shaped adsorption pipe, and the adsorption material is disposed in the U-shaped adsorption pipe.
8. The system for processing poisonous and harmful exhaust gas in a dry chemical filter device according to claim 7, wherein the adsorbing material comprises the following components by mass: 1-5 parts of potassium permanganate, 2-8 parts of soluble copper salt, 2-5 parts of soluble zinc salt, 1-6 parts of soluble silver salt and the balance of porous silicon dioxide carrier.
9. A dry-type according to claim 8The process system for treating the poisonous and harmful tail gas by the chemical filtering device is characterized in that the average pore diameter of the porous silicon dioxide carrier is 50-450 nm, and the specific surface area is 300-500 m2The specific pore volume is 0.3 to 0.6 ml/g.
10. A method for operating a process system for treating poisonous and harmful tail gas by a dry chemical filter device, wherein the process system for treating poisonous and harmful tail gas by the dry chemical filter device is the process system of any one of claims 1 to 9, comprising the following steps:
s1: the process waste gas enters an inlet pipeline through an inlet, the process waste gas enters a main adsorption system after passing through an automatic control valve, a quick connector and a manual cut-off valve in sequence, the process waste gas enters the bottom space of an adsorption bed from the bottom through a hollow structure through a jacket space of the main adsorption system, the process waste gas enters the adsorption bed through a lower porous plate, toxic and harmful components in the process waste gas are purified by an adsorption material in the adsorption bed and then pass through an outlet pipeline, a third manual cut-off valve and a quick connection clamp in sequence, and a concentration detection sensor reaches an auxiliary adsorption system;
s2: the auxiliary adsorption barrels on the auxiliary adsorption system are designed into two, one is in a use state, the other is in a standby state, process waste gas passes through an outlet pipeline, a second manual cut-off valve and a second quick joint and passes through porous plates arranged at the upper end and the lower end of a second adsorption bed to be safely discharged out of the system, the other auxiliary adsorption barrel is used as a standby auxiliary adsorption system, and valves at the front end and the rear end of the auxiliary adsorption barrel are in a closed state;
s3: when the concentration detection sensor detects that the concentration of the process waste gas treated by the main adsorption system exceeds a safe value, the process system considers that the adsorption material in the main adsorption barrel is completely consumed, the concentration detection sensor gives an electric signal to the three-way valve, so that the process waste gas is not discharged into the main adsorption barrel any more, but is directly discharged to an inlet of the auxiliary adsorption system through an auxiliary pipeline, the process waste gas is subjected to temporary purification treatment by utilizing the adsorption material in the auxiliary adsorption barrel, and meanwhile, the system is controlled, and an operator is prompted to replace the main adsorption barrel through alarming;
s4: when the main adsorption barrel of the main adsorption system is replaced, because toxic and harmful components can be remained in the inlet pipeline and the main adsorption barrel, before the main adsorption barrel is replaced, the remained harmful components are swept by the sweeping gas of the sweeping device, and the sweeping gas adopts inert gas;
s5: after sweeping, the main adsorption barrel filled with new adsorption materials replaces the main adsorption barrel which is completely consumed, the process waste gas is guided into the main adsorption barrel through the control system to be purified, and the adsorption materials in the auxiliary adsorption system can be replaced after the main adsorption barrel is replaced.
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US4940213A (en) * 1987-08-24 1990-07-10 Kabushiki Kaisha Toshiba Exhaust processing apparatus
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