CN212408692U - Novel VOCs catalytic combustion furnace - Google Patents

Abstract

The utility model relates to a novel VOCs catalytic combustion furnace, including box and electromagnetic heater, box one end is the air inlet, and the box is separated into through the inner baffle and is burnt furnace and cooling chamber, the box internal fixation has the rack, has placed the catalysis piece on the rack, it has the coolant to let in the cooling chamber. The realization is handled VOCs waste gas, realizes that tail gas discharge to reach standard, has convenient to use, energy-concerving and environment-protective, characteristics such as work safety and stability.

Description

Novel VOCs catalytic combustion furnace

Technical Field

The utility model relates to a waste gas treatment equipment technical field, more specifically say, relate to a novel VOCs catalytic combustion furnace.

Background

The activated carbon adsorption purification technology is a mature chemical unit process, has the advantages of high adsorption efficiency, wide application range, convenient maintenance, capability of treating various mixed waste gases and the like, is widely applied to the treatment of various organic pollutants, and is a reliable and reliable preferred method for treating the low-concentration VOCs waste gases generated by the chemical industries such as coatings, adhesives and the like.

However, the activated carbon adsorption method has a serious problem in that after the activated carbon adsorption is saturated, new activated carbon must be replaced, and the waste activated carbon is a hazardous waste and must be recovered and disposed by qualified units, which results in high operation cost. If with useless activated carbon regeneration, can reduce cost, activated carbon desorption back, the exhaust gas that produces adopts catalytic combustion, is a comparatively ripe method, all catalytic combustion equipment at present, and the technical defect lies in: firstly, the hearth and the catalyst must be heated to 100-500 ℃ before combustion, and the temperature should be constant at a certain temperature, and the preheating time is long by adopting methods such as gas and the like, so that the method is unstable and the temperature is difficult to control. And secondly, the heat generated by combustion in the middle of the furnace is more and accumulated during combustion, and the excessive temperature easily causes the combustion temperature to exceed the optimal combustion temperature, so that the catalyst is easy to lose efficacy, and the operation cost is increased.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a novel VOCs catalytic combustion furnace realizes handling VOCs waste gas, realizes tail gas discharge to reach standard, has characteristics such as convenient to use, energy-concerving and environment-protective, work safety and stability.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a novel VOCs catalytic combustion furnace, includes box and electromagnetic heater, and box one end is the air inlet, and the box is separated into combustion furnace and cooling chamber through the inner baffle, the box internal fixation has the rack, has placed the catalysis piece on the rack, it has let in cooling medium to cool off the intracavity.

In one embodiment, the combustion furnace is provided with a catalytic block, the catalytic block is in a granular or square honeycomb shape, the two ends of the honeycomb catalyst are penetrated by vent holes, and a catalyst layer is adhered to the surface of the honeycomb catalyst.

In one embodiment, the box body is made of steel, the heat insulation layer wraps the box body, the electromagnetic heater is wound on the heat insulation layer and comprises an electromagnetic heating coil, and after the electromagnetic heating coil is electrified, magnetic lines of force generated by the electromagnetic heating coil cut steel, so that the temperature of the steel box body is rapidly increased.

In one embodiment, the electromagnetic heating coil is electrically connected with a power supply through an electromagnetic heating controller.

In one embodiment, the air inlet is a VOCs air inlet, the combustion furnace is provided with a waste gas outlet, VOCs waste gas enters the combustion furnace and then contacts the catalytic block to realize VOCs waste gas combustion, and the generated combustion waste gas is discharged through the waste gas outlet and a waste gas discharge pipe connected with the waste gas outlet.

In one embodiment, the number of the combustion chambers is at least one, and when the number of the combustion chambers is multiple, the combustion chambers surround the cooling chamber.

In one embodiment, the cooling cavity is sealed at the periphery and is completely isolated from the catalytic combustion hearth.

In one embodiment, a cooling medium pipe is arranged in the cooling cavity, one end of the cooling medium pipe is connected with the cold pipe, and the other end of the cooling medium pipe is connected with the hot pipe.

In one embodiment, the cooling medium includes, but is not limited to, air and water.

To sum up, the utility model discloses following beneficial effect has:

firstly, a catalytic combustion furnace provides a sealed combustion environment, a catalytic block arranged in the combustion furnace can effectively reduce the combustion temperature, so that organic waste gas is combusted under the action of the catalytic block, and harmless gas after combustion can be discharged through a waste gas outlet, thereby ensuring the green and environment-friendly process;

secondly, the catalytic combustion furnace does not adopt a direct open flame ignition mode for combustion, the reaction temperature is low, and potential safety hazards in the atmosphere of VOCs are avoided;

thirdly, the heat generated in the combustion process is taken away through a cold air (water) medium in the cooling cavity, and the heat in the cooling cavity is utilized again, so that the economic benefit is improved;

fourthly, the method has the characteristics of convenient use, automatic furnace temperature control, high catalytic combustion efficiency and the like.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic view of a ceramic catalyst block structure;

FIG. 4 is a schematic view of a furnace configuration wound with an electromagnetic heating coil;

FIG. 5 is a circuit connection diagram of a temperature sensor.

In the figure: 1-combustion box, 12-air inlet, 13-combustion furnace chamber, 131-waste gas outlet, 14-cooling cavity, 141-refrigerant pipe, 15-inner partition plate, 2-air guide seat, 21-air guide outlet, 3-cooling pipe, 4-heat pipe, 5-catalytic block, 51-air vent, 6-electromagnetic heating coil, 7-temperature sensor, 8-temperature controller and 9-frequency converter.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

It should be noted that all the directional terms such as "upper" and "lower" referred to herein are used with respect to the view of the drawings, and are only for convenience of description, and should not be construed as limiting the technical solution.

Referring to fig. 1, a novel catalytic combustion furnace for VOCs of a catalytic combustion furnace comprises a combustion box 1, wherein an air inlet 12 is formed in one end of the combustion box 1, the combustion box 1 is divided into two combustion chambers 13 and a cooling chamber 14 (shown in the figure) by two inner partitions 15, a distance is formed between each inner partition 15 and each air inlet 12, so that the air inlets 12 are communicated with the combustion chambers 13, and the width of each air inlet 12 is consistent with that of the combustion box 1; the cooling cavity 14 is positioned between the two combustion hearths 13, a placing frame is fixed in the combustion hearths 13, a catalytic block 5 is placed on the placing frame, and the catalytic block 5 is a ceramic catalytic block; one end of the combustion hearth 13 is communicated with the air inlet 12, the other end of the combustion hearth is provided with a waste gas outlet 131, the horizontal height of the waste gas outlet 131 is higher than that of the cooling cavity 14, and the combustion hearth 13 and the cooling cavity 14 form a concave character; the exhaust gas outlet 131 is provided with the gas guide seat 2, in order to ensure that the gas guide seat 2 is tightly connected with the exhaust gas outlet 131, the corresponding ends of the two are provided with frames with the same size and shape, the frames of the gas guide seat 2 are fixed on the frames of the exhaust gas outlet 131 in a welding way, the gas guide seat 2 is in an isosceles trapezoid shape, the lower end of the gas guide seat is communicated with the exhaust gas outlet 131, the length of the upper end surface of the gas guide seat 2 is shorter than that of the lower end surface, so that when the gas rises, the area of the gas guide seat 2 is continuously reduced in the rising direction, the upper end surface of the gas guide seat 2 is provided with the gas guide outlet 21, the gas is guided into a specific place through the gas guide outlet 21, the cooling cavity 14 is internally provided with a refrigerant pipe 141, the periphery of the cooling cavity 14 is sealed to be in a sealed cuboid structure, pipe holes on the same axis are arranged between the bottom end and the top, a rubber layer can be arranged on the inner hole edge of the pipe hole and can be tightly attached to the refrigerant pipe 141 to ensure air tightness; one end of the refrigerant pipe 141 is connected with the cold pipe 3, cold water is introduced into the cold pipe 3, the cold water is used as a heat transfer medium to absorb heat, the other end of the refrigerant pipe 141 is connected with the heat pipe 4, and the heat pipe 4 takes away high-temperature cold coal (see fig. 2).

Referring to fig. 3, the catalytic block 5 is square, and is provided with vent holes 51 arranged in a honeycomb shape, the vent holes 51 penetrate through two ends of the catalytic block 5, catalyst layers are adhered to the peripheral hole walls of the vent holes 51, the catalytic block 5 is soaked in a catalyst before use, in order to improve the catalyst adhesion amount, adsorption layers can be arranged on the inner and outer walls of the catalytic block 5 to increase the adsorption of the catalyst, and when the catalytic block is used, a ceramic catalyst block is embedded into the combustion furnace 13 by using tools such as long tweezers and is placed on a placing frame of the combustion furnace 13; in order to ensure the sufficient catalytic combustion of the organic waste gas, a plurality of placing frames can be arranged in the combustion hearth 13, and the placing frames are arranged in a staggered mode, so that the phenomenon that the longitudinal positions are overlapped to influence the placing of the ceramic catalyst blocks is avoided.

With reference to figures 4 and 5 of the drawings,

the combustion box 1 is wrapped with an insulating layer, an electromagnetic heater is wound on the insulating layer and comprises an electromagnetic heating coil 6, and after the electromagnetic heating coil is electrified, steel is cut through magnetic lines generated by the electromagnetic heating coil 6, so that the temperature of the steel box body is rapidly increased; in order to avoid the influence of the electromagnetic heating coil 6 on the temperature of the cooling cavity 14, the sectional area of the cooling cavity 14 is smaller than that of the combustion hearth 13, the electromagnetic heating coil 6 cannot be wound on the cooling cavity 14, and the electromagnetic heating coil 6 is electrically connected with a power supply through an electromagnetic heating controller; in order to ensure constant temperature and automatic adjustment, a temperature sensor 7 is arranged in the combustion hearth 13, and the temperature sensor 7 is electrically connected with a temperature controller 8; the temperature controller 8 is connected with the frequency converter 9, and the frequency converter 9 is connected with the electromagnetic heating coil 6 to control the temperature of the electromagnetic heating coil 6.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, 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 (9)

1. The utility model provides a novel VOCs catalytic combustion furnace, its characterized in that, includes box and electromagnetic heater, and box one end is the air inlet, and the box is separated into through the inner baffle and is burnt furnace and cooling chamber, the box internal fixation has the rack, has placed the catalysis piece on the rack, it has the coolant to let in the cooling chamber.

2. A novel catalytic combustion furnace for VOCs as claimed in claim 1 wherein said combustion chamber contains catalytic blocks in the form of granular or square honeycomb with air holes extending through the ends of the honeycomb catalyst and a catalyst layer adhered to the surface thereof.

3. The new VOCs catalytic combustion furnace as claimed in claim 1, wherein the box body is made of steel, the insulating layer is wrapped outside the box body, the insulating layer is wrapped with the electromagnetic heater, the electromagnetic heater comprises an electromagnetic heating coil, and after the electromagnetic heater is powered on, magnetic lines of force generated by the electromagnetic heating coil cut steel, so that the temperature of the steel box body is rapidly raised.

4. A novel VOCs catalytic combustion furnace as claimed in claim 3 wherein said electromagnetic heating coil is electrically connected to a power source through an electromagnetic heating controller.

5. The catalytic combustion furnace for VOCs as claimed in claim 1, wherein said inlet port is a VOCs inlet port, said combustion chamber is provided with an exhaust outlet, and the VOCs exhaust enters said combustion chamber and contacts said catalytic block to burn the VOCs exhaust, and the generated combustion exhaust is discharged through said exhaust outlet and an exhaust discharge pipe connected to said exhaust outlet.

6. A novel catalytic combustion furnace for VOCs as claimed in claim 1 wherein said combustion chamber is at least one and when there are a plurality of combustion chambers, said combustion chambers surround said cooling chamber.

7. A novel catalytic combustion furnace for VOCs as in claim 1 wherein said cooling chamber is sealed around and completely isolated from the catalytic combustion furnace.

8. A novel catalytic combustion furnace for VOCs as claimed in any one of claims 1 to 7, wherein a coolant tube is disposed in said cooling chamber, one end of said coolant tube being connected to said cold tube, and the other end of said coolant tube being connected to said heat tube.

9. A novel catalytic combustion furnace for VOCs as in claim 1 wherein said cooling medium includes but is not limited to air and water.

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