Methyl bromide fumigation gas recovery treatment device

Abstract

The utility model relates to the technical field of gas recycling devices, in particular to a bromomethane fumigation gas recycling device which comprises a first high-temperature-resistant and high-pressure-resistant gas guide pipe, a second high-temperature-resistant and high-pressure-resistant gas guide pipe, a first valve, a filter, a second valve, a sucking pump, a condenser, a snake-shaped buffer pipe, an adsorption tank, a layering box and a storage steel cylinder, the two ends of the first high-temperature-resistant and high-pressure-resistant gas-guide tube are connected with a fumigation chamber and an adsorption tank respectively, a condenser is arranged on the side, away from the first high-temperature-resistant and high-pressure-resistant gas-guide tube, of the adsorption tank, and the condenser is connected with the adsorption tank through a second high-temperature-resistant and high-pressure-resistant gas-guide tube provided with a second valve and a sucking pump; a layering box is arranged on the side, away from the adsorption tank, of the condenser, the layering box is connected with the condenser through a snake-shaped buffer pipe, and after the bromomethane gas is used for fumigating cargoes in the container, the bromomethane gas remaining in the fumigating space can be recycled and reused.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas recycling device technical field, specifically to a kind of methyl bromide fumigation gas recovery processing device. BACKGROUND

[0002] Methyl bromide, i.e. methyl bromide, is commonly used in plant protection as insecticide, fungicide, soil fumigant and grain fumigant. It is also used as wood preservative, low-boiling solvent, organic synthesis raw material and refrigerant, etc. The excellent effect of methyl bromide as fumigant is welcomed by users.

[0003] Methyl bromide has good penetration performance, rapid diffusion, wide range of action and strong insecticidal ability, etc. It is the most commonly used fumigant in international plant and animal quarantine fumigation treatment, and is widely used in fresh fruits, vegetables and flowers, etc. Fresh goods, grains, dried fruits, nuts and wood products, etc. Storage products and buildings such as factories, airports and ships for pest control. However, research has shown that methyl bromide is an ozone-depleting substance. Therefore, at the fourth Meeting of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer (hereinafter referred to as the Montreal Protocol) held in Copenhagen in November 1992, methyl bromide was officially listed as a controlled substance, and its use was gradually replaced and banned. China will also completely ban the use of methyl bromide in agriculture and storage fields from January 1, 2019, but considering the importance of quarantine to national security and the lack of effective alternative measures, methyl bromide is still allowed to be used in quarantine fumigation.

[0004] After the end of methyl bromide fumigation operation, about 40-60% of methyl bromide remains in the fumigation space and is directly discharged into the atmosphere during the air dispersion process, which not only pollutes the environment (methyl bromide can destroy the ozone layer), but also wastes the pesticide. UTILITY MODEL CONTENT

[0005] The utility model aims at the defects of prior art, and provides a methyl bromide fumigation gas recovery processing device to solve the problem that about 40-60% of methyl bromide remains in the fumigation space after the end of methyl bromide fumigation operation, which is directly discharged into the atmosphere during the air dispersion process, which not only pollutes the environment (methyl bromide can destroy the ozone layer), but also wastes the pesticide.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The utility model provides a kind of bromomethane fumigation gas recovery processing device, including first high temperature and high pressure gas guide pipe, second high temperature and high pressure gas guide pipe, first valve, filter, second valve, air pump, condenser, serpentine buffer pipe, adsorption tank, layering tank and storage cylinder, wherein, first high temperature and high pressure gas guide pipe is respectively equipped with first valve and filter, and fumigation library and adsorption tank are connected to the both ends of first high temperature and high pressure gas guide pipe, condenser is equipped on the side of adsorption tank away from first high temperature and high pressure gas guide pipe, and the second high temperature and high pressure gas guide pipe with second valve and air pump being installed is connected between condenser and adsorption tank, layering tank is equipped on the side of condenser away from adsorption tank, and layering tank is connected with condenser through serpentine buffer pipe, and layering tank is connected with storage cylinder through pipeline in the upper portion, and layering tank is connected with waste water treatment system through pipeline in the lower portion.

[0008] As a preferred technical scheme of the utility model, the adsorption tank is respectively provided with an activated carbon fiber adsorption layer and a far infrared heating pipe.

[0009] As a preferred technical scheme of the utility model, the layering tank is provided with a buffer chamber and a layering chamber by a partition plate, the partition plate is arranged on the side close to the liquid inlet of the layering tank, and a through groove is arranged on the top of the partition plate and connected with the buffer chamber and the layering chamber.

[0010] Through the above technical scheme, the buffer chamber is arranged to avoid stirring the liquid being treated by gravity separation when new liquid bromomethane is added into the layering tank.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The utility model can recycle bromomethane gas remaining in the fumigation space after the fumigation treatment of bromomethane gas on goods in the container, reduce the cost of users, avoid the direct emission of bromomethane remaining in the fumigation space to the atmosphere, pollute the surrounding environment, and greatly improve the applicability. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is the structure schematic diagram of the utility model;

[0014] Fig. 2 It is the structure schematic diagram of the adsorption tank of the utility model;

[0015] Fig. 3 It is the structure schematic diagram of the layering tank of the utility model;

[0016] In the figure: 1, fumigation warehouse; 2, first valve; 3, first high-temperature and high-pressure gas guide pipe; 4, filter; 5, adsorption tank; 6, air pump; 7, second high-temperature and high-pressure gas guide pipe; 8, second valve; 9, condenser; 10, serpentine buffer pipe; 11, layered box; 12, storage cylinder; 13, activated carbon fiber adsorption layer; 14, far infrared heating pipe; 15, partition; 16, layered chamber; 17, buffer chamber; 18, through groove. DETAILED DESCRIPTION

[0017] The advantages and features of the present application will be more clearly understood through the following detailed description of the preferred embodiments of the present application with reference to the accompanying drawings, so that the scope of protection of the present application can be more clearly defined.

[0018] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0019] EMBODIMENT

[0020] The present application provides a bromomethane fumigation gas recovery treatment device, as shown in Figs. 1-3 The present application provides a bromomethane fumigation gas recovery treatment device, as shown in

[0021] The serpentine buffer pipe 10 is provided, so that the liquid bromomethane entering the layered box 11 can be buffered in a jet form.

[0022] Reference Fig. 2 The adsorption tank 5 is provided with an activated carbon fiber adsorption layer 13 and a far infrared heating pipe 14, the activated carbon fiber adsorption layer 13 improves the adsorption capacity, and the far infrared heating pipe 14 provides a heat source for bromomethane desorption.

[0023] Reference Fig. 3 The layered tank 11 is provided with a buffer chamber 17 and a layered chamber 16 through a partition plate 15, the buffer chamber 17 avoids new liquid bromomethane from stirring the liquid being processed by gravity layering, so that the liquid bromomethane in the layered chamber 16 can be fully static, and the partition plate 15 is provided with a through slot 18 which communicates the buffer chamber 17 and the layered chamber 16.

[0024] The partition plate 15 is arranged on one side close to the liquid inlet of the layered tank 11, and the liquid inlet of the layered tank 11 is located on the top of the buffer chamber 17, so that the space of the layered chamber 16 is larger than that of the buffer chamber 17, and a larger space is ensured for the liquid bromomethane layering treatment.

[0025] In use, the liquid bromomethane enters the buffer chamber 17 of the layered tank 11 through the serpentine buffer pipe 10, the liquid bromomethane in the buffer chamber 17 enters the layered chamber 16 through the through slot 18 for layering treatment, the liquid surfaces of the buffer chamber 17 and the layered chamber 16 are flush, so that the layered chamber 16 can be replenished with liquid, the newly added liquid bromomethane is prevented from stirring the liquid bromomethane in the layered chamber 16, and the layering treatment can be ensured to be stable.

[0026] The working principle of the utility model is as follows:

[0027] When the fumigation treatment of the articles in the fumigation warehouse 1 is completed, the first valve 2 and the air pump 6 are opened, the air pump 6 draws out the mixed gas mixed with bromomethane and air in the fumigation warehouse 1, the mixed gas enters the adsorption tank 5, the activated carbon fiber adsorption layer 13 adsorbs the bromomethane in the mixed gas, and the air is discharged through the air guide pipe, when the adsorption tank 5 is saturated, the first valve 2 is closed and the second valve 8 is opened, the far infrared heating pipe 14 is started to heat, the bromomethane adsorbed by the activated carbon fiber adsorption layer 13 is desorbed, the air pump 6 is started again, the bromomethane gas desorbed is sent into the condenser 9 through the second high-temperature and high-pressure resistant air guide pipe 7 for condensation treatment, so that the bromomethane gas becomes liquid bromomethane, the liquid bromomethane enters the layered tank 11 through the serpentine buffer pipe 10, and is subjected to gravity layering, the upper bromomethane overflows to the storage steel cylinder 12 through the pipeline, and the lower condensate water is discharged into the waste water treatment system through the pipeline.

[0028] The utility model discloses can carry out fumigation treatment to the goods in container in methyl bromide gas, recycle methyl bromide gas remaining in fumigation space and utilize again, reduce the cost of user, can avoid the methyl bromide remaining in fumigation space direct emission to the atmosphere in the air, cause the pollution to the surrounding environment, greatly improve the applicability.

[0029] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, the term " is connected " " connection " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium. For ordinary skilled person in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific situation.

[0030] The above-mentioned embodiment only expresses several implementation manners of the utility model, and the description is more specific and detailed, but it can not be understood as the limitation of the utility model patent scope. It should be pointed out that for ordinary skilled person in the art, on the premise of not departing from the utility model concept, a number of deformation and improvement can be made, and these all belong to the protection scope of the utility model.

Claims

1. A methyl bromide fumigation off-gas recovery treatment apparatus characterized by: The utility model relates to a kind of fumigation and disinfection system, including first high-temperature and high-pressure gas guide pipe (3), second high-temperature and high-pressure gas guide pipe (7), first valve (2), filter (4), second valve (8), air pump (6), condenser (9), serpentine buffer pipe (10), adsorption tank (5), layered box (11) and storage cylinder (12), wherein, first high-temperature and high-pressure gas guide pipe (3) is respectively equipped with first valve (2) and filter (4), first high-temperature and high-pressure gas guide pipe (3) both ends are connected with fumigation and disinfection warehouse (1) and adsorption tank (5), the side of adsorption tank (5) away from first high-temperature and high-pressure gas guide pipe (3) is equipped with condenser (9), and condenser (9) is connected with adsorption tank (5) by second high-temperature and high-pressure gas guide pipe (7) of being equipped with second valve (8) and air pump (6), the side of condenser (9) away from adsorption tank (5) is equipped with layered box (11), and layered box (11) is connected with condenser (9) by serpentine buffer pipe (10), and the upper portion of layered box (11) is connected with storage cylinder (12) by pipeline, and the lower portion of layered box (11) is connected with waste water treatment system by pipeline.

2. A methyl bromide fumigation off-gas recovery treatment apparatus according to claim 1, characterized by: Active carbon fiber adsorption layer (13) and far infrared heating tube (14) are respectively arranged in the adsorption tank (5).

3. A methyl bromide fumigation off-gas recovery treatment apparatus according to claim 1, characterized by: The layered box (11) is divided into buffer chamber (17) and layered chamber (16) by partition (15), the partition (15) is arranged on the side close to the liquid inlet of layered box (11), and the top of partition (15) is provided with through slot (18) which is communicated with buffer chamber (17) and layered chamber (16).

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