CN218653853U

CN218653853U - Trimethylamine organic waste gas treatment facility

Info

Publication number: CN218653853U
Application number: CN202122344224.2U
Authority: CN
Inventors: 雷红卫
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2023-03-21
Anticipated expiration: 2031-09-27

Abstract

The utility model discloses a trimethylamine organic waste gas treatment facility, which comprises a washing tower; a waste gas inlet and an online PH meter are arranged on the side wall of the washing tower close to the bottom of the washing tower; an air distribution plate is arranged in the washing tower and above the waste gas inlet; a liquid phase circulation system and a dosing system are sequentially arranged outside the washing tower and below the waste gas inlet; a catalytic packing layer is arranged in the washing tower and above the air distribution plate, and comprises a coupling catalytic oxidation unit and a coupling metal packing layer; an atomization spraying system is arranged above each catalytic packing layer and communicated with the second reagent box through a pipeline mixer; the top of the washing tower is provided with a demister and a purified gas exhaust port. The utility model has the advantages that: the utility model discloses can purify trimethylamine organic waste gas and the organic waste gas that contains trimethylamine effectively, and can not produce secondary pollution, need not increase the environmental protection facility again, can popularize and apply by a large scale.

Description

Trimethylamine organic waste gas treatment facility

Technical Field

The utility model relates to an organic abandonment field specifically is a trimethylamine organic waste gas administers facility.

Background

Trimethylamine is a colorless organic amine gas, is toxic, can generate unpleasant and pungent ammonia-like odor and fishy smell, has a low odor threshold value, causes serious odor pollution to the environment, and is one of typical odor substances.

The common treatment methods for trimethylamine gas mainly comprise a physical method, a biological method, a photocatalytic method, a combustion method and the like. The physical method mainly comprises an adsorption method and a water washing and acid washing method, and the biological method mainly adopts a biological filter tank and a filter tower; the photocatalytic method mainly utilizes ultraviolet light to catalyze and degrade, and the combustion method usually adopts RTO and RCO incineration treatment.

Although the methods have good effect of removing trimethylamine, the methods have certain disadvantages, the adsorption method is adopted to modify the activated carbon, the removal rate of the activated carbon is very low, and the adsorption method only adsorbs and gathers trimethylamine gas from a gas phase, cannot achieve the purpose of decomposing the trimethylamine gas, and is usually only used as a terminal advanced treatment stage of a deodorization process; the water washing and acid washing method can generate high-concentration water washing wastewater and acid washing wastewater; the biological method needs to culture biological bacteria, and the waste gas needs to be pretreated, so that the operation condition is severe; the photocatalytic method can degrade trimethylamine more thoroughly, but the application is limited due to the fact that the catalytic reaction needs longer reaction time and is limited by factors such as low luminous efficiency and ultraviolet light utilization efficiency of an ultraviolet lamp. The incineration treatment is limited by the flammable and explosive physicochemical characteristics of the trimethylamine waste gas, potential safety hazards exist, and a large amount of nitrogen oxides are generated in the incineration process of the trimethylamine waste gas, so that the denitration treatment is needed. The use is limited.

Therefore, a trimethylamine organic waste gas treatment facility which has excellent performance, safety, low cost and convenient operation and does not cause secondary pollution needs to be researched urgently.

SUMMERY OF THE UTILITY MODEL

In order to solve the existing problems, the utility model provides a trimethylamine organic waste gas treatment facility. The utility model discloses a following technical scheme realizes.

A trimethylamine organic waste gas treatment facility comprises a washing tower;

a waste gas inlet and an online PH meter are arranged on the side wall of the washing tower close to the bottom of the washing tower; an air distribution plate is arranged in the washing tower and above the waste gas inlet; a liquid phase circulation system and a dosing system are sequentially arranged outside the washing tower and below the waste gas inlet; the liquid phase circulating system consists of a circulating water tank, a circulating pump, a circulating pipeline, a flowmeter and a pipeline mixer; the dosing system comprises a first chemical box and a second chemical box; the liquid phase circulating system is communicated with the first medicament box through a pipeline mixer;

a catalytic packing layer is arranged in the washing tower and above the air distribution plate, and comprises a coupling catalytic oxidation unit and a coupling metal packing layer; an atomization spraying system is arranged above each catalytic packing layer and communicated with the second reagent box through a pipeline mixer;

the top of the washing tower is provided with a demister and a purified gas exhaust port.

Further, a coil pipe type heat exchanger is arranged in the circulating water tank.

Further, the dosing system is provided with a dosing tank, a metering pump and a PH meter; the medicament of the dosing system is hydrogen peroxide, ferrous iron and acid.

Furthermore, the coupling catalytic oxidation unit is in a double-section double circulation type, the tower is oxidized in a section without filler, and the oxidant is sodium hypochlorite or sodium perchlorate; the tower two-section oxidation adopts three-term multi-medium catalytic oxidation.

The utility model has the advantages that: the utility model can effectively convert trimethylamine into trimethylamine oxide, form crystal precipitation, avoid increasing the content of harmful substances in the washing water, reduce secondary pollution, and realize wet operation of the system, wherein the main used agents are hydrogen peroxide, ferrous iron and acid, the consumption of the agents is low, the washing liquid is recycled, and the discharge amount of wastewater is small; the wet process technology is adopted, the waste gas containing explosive components can be treated, the air inlet condition is not strictly limited, and the application range is wide; the tower has low gas velocity, long retention time of waste gas and unique gas distribution structure, so that the waste gas can be uniformly distributed at low gas velocity and almost has no entrainment; the agent is added automatically by the agent adding device, the proportion is accurate, the manual operation amount is small, the trimethylamine organic waste gas and the organic waste gas containing trimethylamine can be effectively purified, the secondary pollution can not be generated, the environment-friendly facility is not required to be added, and the tower can be popularized and applied in a large area.

Drawings

FIG. 1 is a schematic view of the overall structure of a trimethylamine organic waste gas treatment facility of the present invention.

Detailed Description

The technical solution of the present invention will be described in more detail and fully with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the specific embodiment 1, a trimethylamine organic waste gas treatment facility comprises a washing tower;

a waste gas inlet 1 and an online PH meter 2 are arranged on the side wall of the washing tower close to the bottom of the washing tower, and an air distribution plate 3 is arranged inside the washing tower and above the waste gas inlet 1; a liquid phase circulating system and a dosing system are sequentially arranged outside the washing tower and below the waste gas inlet 1, and the liquid phase circulating system is composed of a circulating water tank 4, a circulating pump 5, a circulating pipeline 6, a flowmeter 7 and a pipeline mixer 8; the medicine adding system comprises a first medicine box 9 and a second medicine box 10; the liquid phase circulating system is communicated with the first chemical box through a pipeline mixer;

a catalytic packing layer 11 is arranged in the washing tower and above the air distribution plate 3, and comprises a coupling catalytic oxidation unit and a coupling metal packing layer, and an atomization spraying system 12 is arranged above each catalytic packing layer 11 and is communicated with a second chemical box 10 through a pipeline mixer 8;

the top of the scrubber tower is provided with a demister 13 and a purified gas exhaust port 14.

The specific using process is as follows: trimethylamine waste gas passes through 1 entering scrubbing tower of waste gas air inlet, one section upper portion of scrubbing tower sets up air distribution plate 3, can make waste gas evenly get into the scrubbing tower, this unit outband sets up circulating water tank 4, circulating water tank 4 embeds coil heat exchanger, cool down 4 internal circulating water of circulating water tank through outside refrigerant, the circulating fluid temperature after the cooling of preliminary setting is about 15 ℃, the mode that sprays through the cold circulation liquid is handled waste gas, can play and carry out the effect of secondary cooling and washing to waste gas, this unit can further convert waste gas into the particulate state by the mode of oxidation trimethylamine component through the cooling and catch the processing.

The waste gas rises to enter a high-grade coupling catalytic oxidation unit, and the unit can oxidize the trimethylamine waste gas to produce trimethylamine oxide in a catalytic oxidation mode and form crystal precipitate under the action of cooling water. The unit is set in a double-section double-circulation mode, the first-section oxidation of the tower adopts a filler-free mode, and an oxidant selects sodium hypochlorite or sodium perchlorate; the second-stage oxidation of the tower adopts three multi-medium catalytic oxidations, a coupling metal packing layer is arranged in the tower, a dosing system is matched outside the tower, hydrogen peroxide and ferrous iron with a certain proportion are added into the liquid phase in the tower, and the pH value is adjusted to be in the range of 2-5.

The washing tower is filled with multilayer combined solid fillers, the specific surface area is more than or equal to 500m < 2 >/m < 3 >, an adequate interface is provided for gas-liquid contact, and part of the fillers are loaded with metal catalysts and are used for activating and catalyzing hydrogen peroxide. A superfine atomization spraying system is arranged above each layer of filler, the spraying particle size can reach micron level, the coverage rate reaches 300%, and the gas-liquid convection contact probability is 99%.

The dosing system is provided with a dosing tank, a metering pump and a pH meter, and can realize the automatic control addition of three medicaments.

The top of the tower sets up defroster 13, effectively intercepts liquid drop and particulate matter in the tail gas, and tail gas purifies fully at this moment and reaches emission standard, can discharge through purification gas vent 14.

The utility model can effectively convert trimethylamine into trimethylamine oxide, form crystal precipitate, avoid increasing the content of harmful substances in the washing water, reduce secondary pollution, realize wet operation of the system, mainly use medicaments such as hydrogen peroxide, ferrous iron and acid, realize low medicament consumption, recycle washing liquid and reduce wastewater discharge; the wet process technology is adopted, the waste gas containing explosive components can be treated, the air inlet condition is not strictly limited, and the application range is wide; the tower has low gas velocity, long retention time of waste gas and unique gas distribution structure, so that the waste gas can be uniformly distributed at low gas velocity and almost has no entrainment; the tower is matched with a dosing system, and the medicament is automatically added through the dosing device, so that the proportioning is accurate, and the manual operation amount is small.

The utility model discloses an appearance and size can be according to the size adjustment of the amount of wind, but inner structure and principle are unchangeable.

The utility model discloses can purify trimethylamine organic waste gas and the organic waste gas that contains trimethylamine effectively, and can not produce secondary pollution, need not increase environmental protection facility again.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted", "connected", "fixed", and the like are to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. The first feature being "under," "beneath," and "under" the second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," 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 above description is only for the preferred embodiment of the present invention and should not be taken as limiting the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a trimethylamine organic waste gas treatment facility, includes the scrubbing tower, its characterized in that:

a waste gas inlet and an online PH meter are arranged on the side wall of the washing tower close to the bottom of the washing tower; an air distribution plate is arranged in the washing tower and above the waste gas inlet; a liquid phase circulation system and a dosing system are sequentially arranged outside the washing tower and below the waste gas inlet; the liquid phase circulating system consists of a circulating water tank, a circulating pump, a circulating pipeline, a flowmeter and a pipeline mixer; the dosing system comprises a first chemical box and a second chemical box; the liquid phase circulating system is communicated with the first chemical box through a pipeline mixer;

a catalytic packing layer is arranged in the washing tower and above the air distribution plate, and comprises a coupling catalytic oxidation unit and a coupling metal packing layer; an atomization spraying system is arranged above each catalytic packing layer and is communicated with the second chemical box through a pipeline mixer;

2. The trimethylamine organic waste gas treating facility according to claim 1, wherein: and a coil type heat exchanger is arranged in the circulating water tank.

3. The trimethylamine organic waste gas treating facility according to claim 1, wherein: the dosing system is provided with a dosing tank, a metering pump and a PH meter; the medicament of the dosing system is hydrogen peroxide, ferrous iron and acid.

4. The trimethylamine organic waste gas treating facility according to claim 1, wherein: the coupling catalytic oxidation unit is in a double-section double-circulation type, the tower is oxidized in a section without filling, and an oxidant is sodium hypochlorite or sodium perchlorate; the tower two-stage oxidation adopts three-phase multi-medium catalytic oxidation.