CN214159095U

CN214159095U - Novel VOCs adsorbs concentrated catalytic oxidation clearing machine

Info

Publication number: CN214159095U
Application number: CN202021855813.6U
Authority: CN
Inventors: 于记生; 尹玉雷; 郭晓光; 王甜甜; 孔令迎; 颜由之
Original assignee: Mesnac Heco Co ltd
Current assignee: Qingdao soft control Haike Technology Co.,Ltd.
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-09-10
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a novel VOCs adsorption concentration catalytic oxidation purifier, which comprises an adsorption unit and a catalytic combustion unit which are connected, wherein the adsorption unit comprises a molecular sieve rotating wheel and an adsorption fan, the molecular sieve rotating wheel comprises a treatment area, a regeneration area and a cooling area, the adsorption fan is connected with the outlet of the treatment area, the adsorption unit also comprises a static mixer, the air inlet of the adsorption unit is respectively connected with a high-temperature flue gas discharge port of the catalytic combustion unit and the outlet of the cooling area of the molecular sieve rotating wheel, the air outlet of the adsorption unit is connected with the inlet of the regeneration area, the outlet of the regeneration area is connected with the inlet of the catalytic combustion unit, the cooling air and the high-temperature flue gas are mixed into desorption hot air through the static mixer to desorb the molecular sieve rotating wheel, the purifier combines the adsorption unit with the catalytic combustion unit and is suitable for treating organic waste gas with large air volume, low concentration and complex components, and adds the static mixer to mix the cooling air and the high-temperature flue gas, the heat exchange efficiency is improved, the waste heat utilization rate is improved, and more energy is saved.

Description

Novel VOCs adsorbs concentrated catalytic oxidation clearing machine

Technical Field

The utility model relates to a waste gas treatment technical field, concretely relates to novel VOCs adsorbs concentrated catalytic oxidation clearing machine.

Background

Organic waste gas generated in the production processes of petrochemical industry, pharmaceutical industry, automobile spraying, printing and the like has the characteristics of large air quantity, low concentration, complex components, flammability, explosiveness and the like, and the common treatment process comprises the following steps: activated carbon adsorption, combustion oxidation, low temperature plasma, and the like. However, the activated carbon adsorption method is suitable for large air volume and low concentration waste gas, and has the problems of large resistance coefficient, difficult desorption of partial components and the like. The direct combustion method has the disadvantages of low waste gas concentration, high operation cost and the like. The low-temperature plasma technology has the problems of low efficiency, difficult standard treatment and the like in the conventional waste gas treatment, is gradually eliminated by the market, and a new treatment device needs to be developed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical defect, the utility model provides a following technical scheme:

the utility model provides a novel VOCs adsorbs concentrated catalytic oxidation clearing machine, including the adsorption unit that is connected, the catalytic combustion unit, the adsorption unit includes the molecular sieve runner, the adsorption fan, the molecular sieve runner includes the treatment area, regeneration zone and cooling space, adsorption fan and treatment area exit linkage, the adsorption unit still includes static mixer, its air intake respectively with catalytic combustion unit high temperature fume gas discharge mouth and molecular sieve runner cooling space exit linkage, its air outlet and regeneration zone access connection, regeneration zone export and catalytic combustion unit access connection, the cooling air becomes the hot-blast desorption of desorption through static mixer with high temperature flue gas and carries out the desorption to the molecular sieve runner.

The purifier combines the adsorption unit and the catalytic combustion unit, is suitable for treating organic waste gas with large air quantity, low concentration and complex components, adds a static mixer to mix cooling air and high-temperature flue gas, improves the heat exchange efficiency, improves the waste heat utilization rate, and saves more energy.

Further, the static mixer comprises a shell, wherein one or more of porous metal filler, heat storage ceramic filler and random ceramic filler are filled in a cavity of the shell, and the porous structure is fully mixed for heat exchange.

Furthermore, the adsorption unit also comprises a multi-stage filter, the outlet of the multi-stage filter is connected with the inlet of the treatment area, and the gas entering the molecular sieve rotating wheel is subjected to pre-treatment to avoid influencing the operation of the molecular sieve.

Furthermore, the catalytic combustion unit comprises a catalytic fan, a heat exchanger, an electric heater and a catalytic furnace which are connected in sequence, an outlet of the molecular sieve rotating wheel regeneration area is connected with an inlet of the catalytic fan, part of high-temperature flue gas discharged from an outlet of the catalytic furnace enters an inlet at the hot side of the heat exchanger, and part of the high-temperature flue gas enters the static mixer.

The desorbed small-air-volume high-concentration waste gas enters a catalytic combustion unit for treatment, the desorbed high-concentration waste gas is sent into a catalytic furnace through a catalytic fan, the high-concentration waste gas enters a cold side inlet of a heat exchanger for gas-gas heat exchange, the temperature of the waste gas is increased, the proper reaction temperature of a metal catalyst in the catalytic furnace on the organic waste gas is 250-350 ℃, the waste gas after heat exchange in the heat exchanger can not reach the proper reaction temperature of the catalyst, an electric heater is required to supplement energy properly, and the high-concentration organic waste gas is oxidized and decomposed into CO in a catalytic combustion bed₂And H₂And O, simultaneously releasing a large amount of energy, allowing part of the combusted high-temperature flue gas to enter a static mixer to be mixed with cooling air to desorb the molecular sieve rotating wheel, and allowing the other part of the combusted high-temperature flue gas to enter a hot side inlet of a heat exchanger to exchange heat with high-concentration waste gas, so that the aims of energy conservation and environmental protection are fulfilled.

Furthermore, a flame arrester is arranged between the outlet of the molecular sieve rotating wheel regeneration area and the catalytic fan, so that the safety is improved.

Further, establish control by temperature change adjusting device between molecular sieve runner and the static mixer, including controller, electric control valve and temperature sensor, all set up the electric control valve on the connecting tube between cooling zone export, high temperature flue gas discharge port and the static mixer import, establish temperature sensor on the connecting tube between static mixer export and the treatment area import, temperature sensor, electric control valve all are connected with the controller.

The temperature control adjusting device is added, the temperature in the static mixer is adjusted by controlling the air quantity, the hot air temperature and the distribution are more uniform and controllable, and the influence of temperature fluctuation on the operation of the molecular sieve rotating wheel is avoided.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the purifier combines the adsorption unit with the catalytic combustion unit, is suitable for treating organic waste gas with low concentration and large air volume, and is matched with the static mixer, so that the waste heat utilization rate is improved, and more energy is saved.

2. This clearing machine increases temperature regulation apparatus, adjusts static mixer mist's temperature through control intake, and the temperature fluctuation is little, and is more controllable.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described 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 to obtain other drawings without creative efforts.

FIG. 1 is a flow chart of the present invention;

wherein the reference numerals are:

a. a temperature sensor; b. and (4) electrically controlling the valve.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

Example 1

Referring to fig. 1, the novel adsorption, concentration, catalytic oxidation purifier for VOCs comprises an adsorption unit and a catalytic combustion unit, wherein the adsorption unit comprises a molecular sieve rotating wheel, an adsorption fan and a static mixer, the molecular sieve rotating wheel comprises a treatment area, a regeneration area and a cooling area, a multi-stage filter is arranged at the inlet of the treatment area, organic waste gas is subjected to pre-filtration treatment and then enters a molecular sieve rotating wheel, an adsorption fan is connected with an outlet of a treatment area, the adsorbed clean gas is pumped out, fresh air enters a cooling area for cooling, and then enters a static mixer from an outlet of the cooling area, meanwhile, high-temperature flue gas of the catalytic combustion unit enters a static mixer, the high-temperature flue gas and the cooling gas phase in the mixer are mixed and then enter a regeneration area for desorption, and high-concentration and small-air-volume waste gas discharged from an outlet of the regeneration area after desorption enters the catalytic combustion unit for catalytic combustion treatment.

In this embodiment, the static mixer adopts the casing intracavity to be filled with porous metal filler, heat accumulation ceramic filler and random pile ceramic filler one or more's structure to the heat transfer is carried out with the intensive mixing of high temperature flue gas, cooling gas to porous structure, improves waste heat utilization, if adopt the rectangle casing, packs heat accumulation ceramic ball in the rectangle casing.

In this embodiment, the catalytic combustion unit is including the catalysis fan that connects gradually, the heat exchanger, electric heater and catalytic furnace, and the spark arrester, install the spark arrester on the connecting tube between the export of molecular sieve runner regeneration zone and the catalytic fan import, the high temperature flue gas part of discharging from the catalytic furnace export gets into the import of heat exchanger hot side, the part gets into static mixer, the catalysis fan gets into waste gas through heat exchanger cold side entry, carry out supplementary heating in getting into the electric heater behind the heat transfer, make it reach catalytic combustion's temperature, later get into the catalytic furnace and carry out catalytic combustion and handle, the high temperature waste gas part that produces after the burning gets into the heat exchanger, the part gets into static mixer, waste heat utilization rate is high.

In another embodiment, referring to fig. 1, a temperature control adjusting device is further installed between the molecular sieve rotating wheel and the static mixer, and includes a controller, an electric control valve b and a temperature sensor a, the electric control valves are installed on the connecting pipeline between the outlet of the cooling zone and the inlet of the high-temperature flue gas discharge port, the temperature sensor is installed on the connecting pipeline between the outlet of the static mixer and the inlet of the processing zone, the temperature sensor and the electric control valve are both connected with the controller, the temperature sensor senses the temperature of the gas in the pipeline and feeds back the temperature to the controller, and the controller issues an instruction to the electric control valve to adjust the air intake amount and further control the temperature in the static mixer.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a novel VOCs adsorbs concentrated catalytic oxidation clearing machine which characterized in that: the adsorption unit comprises a molecular sieve rotating wheel and an adsorption fan which are connected, the molecular sieve rotating wheel comprises a treatment area, a regeneration area and a cooling area, the adsorption fan is connected with an outlet of the treatment area, the adsorption unit also comprises a static mixer, an air inlet of the static mixer is respectively connected with a high-temperature flue gas discharge port of the catalytic combustion unit and an outlet of the molecular sieve rotating wheel cooling area, an air outlet of the static mixer is connected with an inlet of the regeneration area, an outlet of the regeneration area is connected with an inlet of the catalytic combustion unit, and cooling air and high-temperature flue gas are mixed into desorption hot air through the static mixer to desorb the molecular sieve rotating wheel;

the static mixer comprises a shell, wherein one or more of porous metal filler, heat storage ceramic filler and random ceramic filler is filled in a cavity of the shell;

establish control by temperature change adjusting device between molecular sieve runner and static mixer, including controller, electric control valve and temperature sensor, all set up the electric control valve on the connecting tube between cooling zone export, high temperature flue gas discharge port and the static mixer import, establish temperature sensor on the connecting tube between static mixer export and the treatment area import, temperature sensor, electric control valve all are connected with the controller.

2. The new-type VOCs adsorption, concentration, catalytic oxidation purifier of claim 1, wherein: the adsorption unit further comprises a multi-stage filter, the outlet of which is connected to the inlet of the treatment zone.

3. The new-type VOCs adsorption, concentration, catalytic oxidation purifier of claim 1, wherein: the catalytic combustion unit comprises a catalytic fan, a heat exchanger, an electric heater and a catalytic furnace which are sequentially connected, an outlet of a molecular sieve rotating wheel regeneration area is connected with an inlet of the catalytic fan, part of high-temperature flue gas discharged from an outlet of the catalytic furnace enters an inlet at the hot side of the heat exchanger, and part of the high-temperature flue gas enters the static mixer.

4. The new-type VOCs adsorption, concentration, catalytic oxidation purifier of claim 3, wherein: a flame arrester is arranged between the outlet of the regeneration area of the molecular sieve rotating wheel and the catalytic fan.