CN212701205U

CN212701205U - Activated carbon detention bed waste gas treatment system

Info

Publication number: CN212701205U
Application number: CN202021138649.7U
Authority: CN
Inventors: 孟令佳; 欧阳钦; 刘红雨; 杨均勇; 张冰; 杨占山; 马幸龙; 肖忠鹏
Original assignee: Cnnc Environmental Protection Industrial Co ltd
Current assignee: Cnnc Environmental Protection Industrial Co ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-03-16
Anticipated expiration: 2030-06-18

Abstract

The utility model discloses an active carbon detention bed waste gas treatment system in the technical field of waste gas treatment systems, which comprises a vacuum-pumping regeneration system and an active carbon performance analysis system; the vacuumizing regeneration system comprises a vacuumizing device, a gas-water separator, a cold trap, a filter and an active carbon detention bed, wherein the vacuumizing device, the gas-water separator, the cold trap, the filter and the active carbon detention bed are sequentially connected with one another through a pipeline; the active carbon performance analysis system comprises an active carbon strength measurement module, an active carbon water content measurement module, an active carbon particle size distribution measurement module and an active carbon radioactive gas adsorption coefficient measurement module, and can improve the adsorption performance of the active carbon by vacuum activation under the condition that the active carbon of the retention bed is not unloaded, so that the retention bed is improved, and the system is practical.

Description

Activated carbon detention bed waste gas treatment system

Technical Field

The utility model relates to a waste gas treatment system technical field specifically is an active carbon is detained bed waste gas treatment system.

Background

Various radioactive process waste gases are inevitably generated in the operation process of the nuclear power station, and are mainly divided into hydrogen-containing waste gases and oxygen-containing waste gases according to the radioactivity level. The hydrogen-containing waste gas mainly comprises radioactive inert gas ammonia, hydrogen radioactive isotope, hydrogen and nitrogen generated by nuclear fission reaction, and the main technical indexes of the performance of the active carbon are strength, water content, particle size distribution and dynamic adsorption coefficients for krypton and xenon.

When the existing waste gas treatment system of the activated carbon retention bed is used, the adsorption performance of the activated carbon is low under the condition that the activated carbon of the retention bed is not discharged, and the retention effect of the retention bed is influenced, so that the use performance of the system is influenced.

Based on this, the utility model designs an active carbon is detained bed exhaust-gas treatment system in order to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an active carbon is detained bed exhaust-gas treatment system to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an active carbon retention bed waste gas treatment system comprises a vacuumizing regeneration system and an active carbon performance analysis system;

the vacuumizing regeneration system comprises a vacuumizing device, a gas-water separator, a cold trap, a filter and an active carbon retention bed, wherein the vacuumizing device, the gas-water separator, the cold trap, the filter and the active carbon retention bed are sequentially connected with one another through a pipeline;

the active carbon performance analysis system comprises an active carbon strength measurement module, an active carbon water content measurement module, an active carbon particle size distribution measurement module and an active carbon adsorption coefficient measurement module for the radioactive gas tank.

Preferably, the activated carbon strength measuring module adopts a PS-80 type activated carbon strength tester, the activated carbon water content measuring module adopts a DH-203S type electric heating constant temperature drying oven, and the activated carbon particle size distribution measuring module adopts a ZBSX-92A type shock type standard sieving machine.

Preferably, the vacuumizing device is used for reducing the water content of the activated carbon, the gas-water separator is used for performing gas-liquid separation on the extracted gas, the filter is used for filtering the extracted gas, the liquid collecting bottle is used for collecting the liquid at the separation position, and the cold trap is used for trapping the discharged water vapor.

Preferably, the humidity of the pumped gas in the carbon retention bed is measured using a humidity probe of the type mionell Easidew.

Preferably, the module for measuring the adsorption coefficient of the activated carbon to the radioactive gas tank comprises a radioactive detection gas, water and a thermal conductivity detector, and the radioactive detection gas, the water and the thermal conductivity detector are sequentially communicated through pipelines.

Preferably, the radioactive gas tank comprises a first radioactive gas tank and a second radioactive gas tank, and the first radioactive gas tank is located above the second radioactive gas tank.

Compared with the prior art, the beneficial effects of the utility model are that: the inside of the activated carbon retention bed is vacuumized by a vacuumizing regeneration system, the pumped air is filtered by a filter and enters a cold trap, the cold trap is matched with the action of a refrigeration system to trap exhausted vapor and harmful gas, the efficiency of the vacuum system is improved, the steam suction amount of the vacuum pump is greatly reduced, the service life of the vacuum pump is prolonged, the pumped air is subjected to gas-liquid separation by a gas-water separator, a liquid collecting bottle is adopted to collect liquid, the separated gas is exhausted by a vacuumizing device, and then the performances corresponding to the activated carbon in the activated carbon retention bed are respectively measured and analyzed by an activated carbon strength measuring module, an activated carbon water content measuring module, an activated carbon particle size distribution measuring module and an activated carbon adsorption coefficient measuring module of a radioactive gas tank, so that the performances corresponding to each item of the activated carbon are ensured to reach the corresponding standard, and introducing the waste gas into the activated carbon retention bed through the waste gas inlet, treating the waste gas, discharging the waste gas through a waste gas outlet, reducing the water content of the activated carbon through vacuumizing, and not changing the hardness and the corresponding performance of the particle size distribution of the activated carbon, so that the purpose of improving the dynamic adsorption coefficient of the activated carbon is achieved, the adsorption performance of the activated carbon is improved through vacuum activation under the condition that the activated carbon of the retention bed is not unloaded, and the retention performance of the retention bed is improved.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural diagram of the vacuum pumping system of the present invention;

fig. 3 is a structural diagram of the module for measuring the adsorption coefficient of the radioactive gas tank of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. cold trap; 2. a filter; 3. an exhaust gas inlet; 4. an activated carbon retention bed; 5. an exhaust gas outlet; 6. A liquid collection bottle; 7. a refrigeration system; 8. a gas-water separator; 9. a vacuum pumping device; 10. a first radioactive gas canister; 11. a second radioactive gas tank; 12. a thermal conductivity detector; 13. and (3) water.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution of an activated carbon retention bed waste gas treatment system: an active carbon retention bed waste gas treatment system comprises a vacuumizing regeneration system and an active carbon performance analysis system;

the vacuumizing regeneration system comprises a vacuumizing device 9, a gas-water separator 8, a cold trap 1, a filter 2 and an active carbon retention bed 4, wherein the vacuumizing device 9, the gas-water separator 8, the cold trap 1, the filter 2 and the active carbon retention bed 4 are sequentially connected with one another through a pipeline, one side of the gas-water separator 8 is connected with a liquid collecting bottle 6, one side of the cold trap 1 is provided with a gas outlet and a water outlet, the gas outlet is positioned on one side of the water outlet, the other side of the cold trap 1 is connected with a refrigeration system 7 through a pipeline, one side of the active carbon retention bed is provided with a;

The activated carbon strength measuring module adopts a PS-80 type activated carbon strength tester, the activated carbon water content measuring module adopts a DH-203S type electric heating constant temperature drying box, and the activated carbon particle size distribution measuring module adopts a ZBSX-92A type shock type standard sieving machine.

The vacuumizing device 9 is used for reducing the water content of the activated carbon, the gas-water separator 8 is used for performing gas-liquid separation on the extracted gas, the filter 2 is used for filtering the extracted gas, the liquid collecting bottle 6 is used for collecting the liquid at the separation part, and the cold trap 1 is used for trapping the discharged water vapor.

The humidity of the pumped gas in the activated carbon retention bed 4 was measured by using a humidity probe of the Michelle Easidew type.

The module for measuring the adsorption coefficient of the active carbon to the radioactive gas tank comprises a radioactive detection gas, water 13 and a thermal conductivity detector 12, and the radioactive detection gas, the water 13 and the thermal conductivity detector 12 are communicated in sequence through pipelines.

The radioactive gas canister includes a first radioactive gas canister 10 and a second radioactive gas canister 11, and the first radioactive gas canister 10 is located above the second radioactive gas canister 11.

One specific application of this embodiment is: firstly, radioactive gas in a first radioactive gas tank passes through a thermal conductivity detector to obtain a measurement signal, then the first radioactive gas tank is mixed with radioactive gas in a second radioactive gas tank, water treatment is carried out, the treated gas is introduced into the thermal conductivity detector again to obtain the measurement signal, finally the concentration value of the radioactive gas tank is obtained by comparing the signal with the signal, the adsorption coefficient of active carbon to the radioactive gas tank is obtained through the change of the concentration value, the interior of an active carbon retention bed 4 is vacuumized through a vacuumizing regeneration system, the pumped air is filtered through a filter 2 and enters a cold trap 1, the cold trap 1 is matched with a refrigerating system 7 to trap the discharged water vapor and harmful gas, the efficiency of the vacuum system is improved, the vapor suction quantity of the vacuum pump is greatly reduced, the service life of the vacuum pump is prolonged, and the pumped gas is subjected to gas-liquid separation through a gas-water separator 8, adopt liquid collecting bottle 6 to collect liquid, the gas after being separated is discharged through evacuating device 9, then respectively through active carbon intensity measuring module, active carbon water content measuring module, active carbon particle size distribution measuring module and active carbon to radioactive gas tank adsorption coefficient measuring module respectively measure and analyze the corresponding performance of active carbon in active carbon detention bed 4, ensure that each corresponding performance of active carbon reaches the corresponding standard, then introduce waste gas into active carbon detention bed 4 through waste gas inlet 3, treat it, finally discharge through waste gas outlet 5, can reduce the water content of active carbon through evacuating, and the corresponding performance of hardness and particle size distribution of active carbon does not change, thereby reach the purpose of improving the dynamic adsorption coefficient of active carbon, can be under the condition that detention bed active carbon does not discharge, the vacuum activation improves the adsorption performance of the activated carbon and the retention performance of the retention bed.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An active carbon retention bed waste gas treatment system is characterized by comprising a vacuumizing regeneration system and an active carbon performance analysis system;

the vacuumizing regeneration system comprises a vacuumizing device (9), a gas-water separator (8), a cold trap (1), a filter (2) and an active carbon retention bed (4), wherein the vacuumizing device, the gas-water separator (8), the cold trap (1), the filter (2) and the active carbon retention bed (4) are sequentially connected through a pipeline, one side of the gas-water separator (8) is connected with a liquid collecting bottle (6), one side of the cold trap (1) is provided with a gas outlet and a water outlet, the gas outlet is positioned at one side of the water outlet, the other side of the cold trap (1) is connected with a refrigeration system (7) through a pipeline, one side of the active carbon retention bed (4) is provided with a waste gas inlet (3), and;

2. An activated carbon retention bed off-gas treatment system according to claim 1, characterized in that: the activated carbon strength measurement module adopts a PS-80 type activated carbon strength tester, the activated carbon water content measurement module adopts a DH-203S type electric heating constant temperature drying oven, and the activated carbon particle size distribution measurement module adopts a ZBSX-92A type jarring type standard sieving machine.

3. An activated carbon retention bed off-gas treatment system according to claim 1, characterized in that: the module for measuring the adsorption coefficient of the active carbon to the radioactive gas tank comprises a radioactive detection gas, water (13) and a thermal conductivity detector (12), and the radioactive detection gas, the water (13) and the thermal conductivity detector (12) are communicated through pipelines in sequence.

4. An activated carbon retention bed off-gas treatment system according to claim 3, characterized in that: the radioactive gas tank comprises a first radioactive gas tank (10) and a second radioactive gas tank (11), and the first radioactive gas tank (10) is positioned above the second radioactive gas tank (11).