WO2022007620A1

WO2022007620A1 - Continuous multi-channel adsorption device and industrial waste gas treatment system

Info

Publication number: WO2022007620A1
Application number: PCT/CN2021/101120
Authority: WO
Inventors: 李振岳; 王晋剡
Original assignee: 淄博鹏达环保科技有限公司
Priority date: 2020-07-06
Filing date: 2021-06-21
Publication date: 2022-01-13

Abstract

The present invention belongs to the technical field of waste gas treatment, and particularly relates to a continuous multi-channel adsorption device and an industrial waste gas treatment system. The interior of the adsorption device is sequentially divided into an adsorption chamber, a desorption chamber and a cooling chamber from top to bottom; a temporary storage chamber is provided on the upper portion of the adsorption chamber; a gas inlet is formed on the lower portion of the adsorption chamber, and a gas outlet is formed on the upper portion of the adsorption chamber; a plurality of adsorption channels are formed in the adsorption device and penetrate through the adsorption chamber, the desorption chamber and the cooling chamber; upper inlets of the adsorption channels are communicated with the temporary storage chamber, and lower outlets of the adsorption channels are connected to the temporary storage chamber by means of lifting means. According to the industrial waste gas treatment system using the adsorption device in the present invention, waste gas can be continuously and effectively adsorbed and treated, production efficiency is improved, economic benefits are improved, and operation costs are reduced. The adsorption device in the present invention can realize continuous desorption and regeneration of an adsorption material, solves the problem of frequent replacement of the adsorption material, and greatly saves production costs for enterprises.

Description

Continuous multi-channel adsorption equipment and industrial waste gas treatment system

technical field

The invention belongs to the technical field of waste gas treatment, and in particular relates to a continuous multi-channel adsorption device and a treatment system for industrial waste gas.

Background technique

Industrial waste gas refers to the general term for various pollutant-containing gases discharged into the air generated during the fuel combustion and production process in the factory area of the enterprise. These exhaust gases contain: aliphatic and aromatic various alkanes, olefins, oxygenated hydrocarbons and halogenated hydrocarbons and other volatile organic compounds (VOCs), carbon dioxide, carbon disulfide, hydrogen sulfide, fluoride, nitrogen oxides, chlorine, hydrogen chloride, Carbon monoxide, sulfuric acid (fog), lead and mercury, beryllium compounds, soot and productive dust are discharged into the atmosphere and will seriously pollute the air. These substances enter the human body from the respiratory tract through different ways, some directly cause harm, and some have accumulative effects, which will seriously endanger human health. Therefore, it is necessary to completely absorb the industrial waste gas and discharge it up to the standard.

At present, the adsorption of industrial waste gas is mainly based on fixed bed adsorption and removal, such as VOCs (volatile organic compounds) waste gas. According to the exhaust gas volume, a cylindrical or box-type reactor of corresponding specifications is selected, and the interior is filled with adsorption materials (silica gel, oxidative gas, etc.). Aluminum, activated carbon, diatomaceous earth, etc.), the air intake mode is the top intake or bottom intake of the reactor, and the exhaust gas is removed through the adsorbent material bed of the reactor.

However, there are the following problems in the prior art: due to the complex components of industrial waste gas in chemical industries and other industries, water-containing and polymerizable substances at room temperature, the adsorption material is easy to block and mold, the adsorption capacity is limited, the adsorption material is frequently replaced and difficult to regenerate, resulting in industrial waste gas. Management costs are high.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to provide a continuous multi-channel adsorption device, which can realize the continuous analysis and regeneration of the adsorption material, and solve the problem of frequent replacement of the adsorption material. The industrial waste gas treatment system of the adsorption equipment can continuously treat the waste gas, and the parsed organic waste gas can be selectively recovered and utilized, which reduces the cost and saves energy.

The present invention adopts the following technical solutions to realize:

In the continuous multi-channel adsorption device of the present invention, the adsorption device is divided into an adsorption chamber, a desorption chamber and a cooling chamber in sequence from top to bottom. The upper part of the adsorption chamber is provided with a temporary storage chamber, and the lower part of the adsorption chamber is provided with a temporary storage chamber. There is an air inlet, the upper part of the adsorption chamber is provided with an air outlet, the adsorption device is provided with a plurality of adsorption channels, the adsorption channels run through the adsorption chamber, the desorption chamber and the cooling chamber, and the upper inlet of the adsorption channel is connected to the temporary storage chamber. The outlet of the lower part of the adsorption channel is connected with the temporary storage chamber through the lifting device.

Preferably, a first regulating valve is provided on the adsorption channel between the adsorption chamber and the desorption chamber, a second regulating valve is provided on the adsorption channel between the desorption chamber and the cooling chamber, and the lower part of the adsorption channel is provided with a second regulating valve. There is a third regulating valve at the outlet.

Preferably, a pressure detector and a gas concentration detector are provided at the gas outlet, and both the pressure detector and the gas concentration detector are electrically connected to the first regulating valve. According to the feedback signals of the pressure detector and the gas concentration detector, the opening and closing of the first regulating valve can be controlled, and the automatic control can be realized.

Preferably, the upper part of the temporary storage chamber is provided with a feeding port, and the temporary storage chamber can be replenished with fresh adsorbent material through the feeding port.

Preferably, the number of the adsorption channels is 1-30, preferably 6-18.

The industrial waste gas treatment system of the present invention includes the above-mentioned adsorption equipment and a waste gas pipeline. The waste gas pipeline is connected to the first condenser, and the first condenser is connected to the air inlet of the adsorption equipment through a fan.

Preferably, the desorption chamber of the adsorption equipment is connected with the high-temperature heat medium pipeline, the desorption chamber is connected with the second condenser, and the top of the second condenser is connected with the air inlet of the adsorption equipment through a fan.

Preferably, the cooling chamber is provided with a refrigerant pipeline.

Preferably, the adsorption channel in the adsorption chamber is filled with adsorption material, the thickness of the adsorption material is 200-1000 mm, and the pore size of the adsorption material is 1.5-30 nm.

The described industrial waste gas treatment system, the treatment method comprises the following steps:

1) After the exhaust gas is cooled and condensed by the first condenser, the exhaust gas is introduced into the adsorption chamber in the adsorption equipment by the fan, and the exhaust gas is discharged from the air outlet up to the standard after being adsorbed by the adsorption material in the adsorption channel;

2) The adsorbent material after adsorbing the exhaust gas is transported from the adsorption chamber to the desorption chamber through the adsorption channel from top to bottom for desorption, and the adsorbent material in the temporary storage chamber is supplemented to the adsorption channel to continue to adsorb the exhaust gas;

3) The adsorption material is desorbed in the desorption chamber, and the desorbed organic waste gas enters the subsequent treatment;

4) After the desorption is completed, the desorbed adsorbent material is transported from top to bottom to the cooling room for cooling and cooling, and then transported to the temporary storage room through the lifting device for recycling.

Preferably, the decomposed organic waste gas can be directly combusted or recovered after condensation.

Compared with the prior art, the beneficial effects of the present invention are as follows:

1. The continuous multi-channel adsorption device of the present invention can realize the continuous analysis and regeneration of the adsorption material, solve the problem of frequent replacement of the adsorption material, and greatly save the production cost for the enterprise.

2. The industrial waste gas treatment system of the present invention adopts continuous multi-channel adsorption equipment, which can continuously treat waste gas and improve production efficiency, and the parsed organic waste gas can be selectively recovered and utilized for resource utilization, which can improve economic benefits and reduce costs. Operating costs.

Description of drawings

Fig. 1 is the structural representation of the treatment system of industrial waste gas of the present invention;

Fig. 2 is the structural representation of the continuous multi-channel adsorption equipment of the present invention;

In the figure: 1. Exhaust gas pipeline; 2. First condenser; 3. Fan; 4. Adsorption equipment; 5. Second condenser; 6. Refrigerant pipeline; 7. High-temperature heating medium pipeline; 8. Adsorption chamber; 9. adsorption channel; 10, desorption chamber; 11, cooling chamber; 12, third regulating valve; 13, lifting device; 14, second regulating valve; 15, first regulating valve; 16, air inlet; 17, temporary storage chamber; 18, feeding port; 19, pressure detector; 20, gas concentration detector; 21, gas outlet.

detailed description

The present invention will be further described below with reference to the embodiments and the accompanying drawings.

Example 1

As shown in Figures 1-2, in the continuous multi-channel adsorption device, the adsorption device 4 is divided into an adsorption chamber 8, a desorption chamber 10 and a cooling chamber 11 in sequence from top to bottom. The upper part of the adsorption chamber 8 is provided with There is a temporary storage chamber 17, the lower part of the adsorption chamber 8 is provided with an air inlet 16, the upper part of the adsorption chamber 8 is provided with an air outlet 21, the adsorption device 4 is provided with two adsorption channels 9, and the adsorption channels 9 run through the adsorption Chamber 8 , desorption chamber 10 and cooling chamber 11 , the upper inlet of the adsorption channel 9 is connected to the temporary storage chamber 17 , and the lower outlet of the adsorption channel 9 is connected to the temporary storage chamber 17 through the lifting device 13 .

The adsorption channel 9 between the adsorption chamber 8 and the desorption chamber 10 is provided with a first regulating valve 15, and the adsorption channel 9 between the desorption chamber 10 and the cooling chamber 11 is provided with a second regulating valve 14, so A third regulating valve 12 is provided at the lower outlet of the adsorption channel 9 .

The gas outlet 21 is provided with a pressure detector 19 and a gas concentration detector 20 , and both the pressure detector 19 and the gas concentration detector 20 are electrically connected to the first regulating valve 15 .

The upper part of the temporary storage chamber 17 is provided with a feeding port 18 .

The treatment system of the described industrial waste gas comprises the above-mentioned adsorption equipment 4 and the exhaust gas pipeline 1, the exhaust gas pipeline 1 is connected with the first condenser 2, and the first condenser 2 is connected with the air inlet of the adsorption equipment 4 through the fan 3 16 connections.

The desorption chamber 10 of the adsorption equipment 4 is connected with the high-temperature heat medium pipeline 7, the high-temperature heat medium pipeline 7 is filled with high-temperature steam, the desorption chamber 10 is connected with the second condenser 5, and the top of the second condenser 5 is passed through a fan. 3 is connected to the air inlet 16 of the adsorption device 4 .

The cooling chamber 11 is provided with a refrigerant pipeline 6, and the refrigerant pipeline 6 is provided with cooling water.

The adsorption channel 9 in the adsorption chamber 8 is filled with adsorption material, the thickness of the adsorption material is 500 mm, and the pore size of the adsorption material is 1.5-30 nm.

1) After the VOCs waste gas enters the first condenser 2 through the waste gas pipeline 1 to cool down and condense to 30 ° C, it is introduced into the adsorption chamber 8 of the adsorption equipment 4 by the fan 3. After the waste gas is adsorbed by the adsorption material in the adsorption channel 9, it flows from the air outlet 21 Up to standard discharge;

2) The pressure detector 19 and the gas concentration detector 20 at the gas outlet 21 monitor the exhaust gas concentration and pressure of the exhaust gas. When the pressure drop of the exhaust gas is 450-550Pa, the adsorbent material needs to be replaced, and the first regulating valve 15 is opened to adsorb the gas. The adsorbent material after exhaust gas is transported from the adsorption chamber 8 to the desorption chamber 10 through the adsorption channel 9 from top to bottom for desorption, and the adsorbent material in the temporary storage chamber 17 is supplemented to the adsorption channel 9 in the adsorption chamber 8 to continue to adsorb the exhaust gas. ;

3) High-temperature steam at 230° C. is introduced into the desorption chamber 10 to desorb the adsorbent material, and the desorbed organic waste gas is condensed and recovered by the second condenser 5, and the non-condensable gas in the second condenser 5 is circulated and entered The adsorption continues in the adsorption device 4;

4) After the desorption is completed, open the second regulating valve 14 to transport the desorbed adsorbent material from top to bottom into the cooling chamber 11 for cooling and cooling, then open the third regulating valve 12 and transport it to the temporary storage chamber through the lifting device 13 17. Recycle.

Of course, the above contents are only preferred embodiments of the present invention, and should not be considered as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and equivalent changes and improvements made by those of ordinary skill in the technical field within the essential scope of the present invention should all belong to the scope of the patent of the present invention.

Claims

A continuous multi-channel adsorption device is characterized in that: the adsorption device (4) is divided into an adsorption chamber (8), a desorption chamber (10) and a cooling chamber (11) in sequence from top to bottom, and the adsorption chamber (8) The upper part is provided with a temporary storage chamber (17), the lower part of the adsorption chamber (8) is provided with an air inlet (16), and the upper part of the adsorption chamber (8) is provided with an air outlet (21). (4) A plurality of adsorption channels (9) are provided inside, and the adsorption channels (9) run through the adsorption chamber (8), the desorption chamber (10) and the cooling chamber (11). The storage chamber (17) is communicated, and the lower outlet of the adsorption channel (9) is connected with the temporary storage chamber (17) through the lifting device (13).
The continuous multi-channel adsorption device according to claim 1, wherein the adsorption channel (9) between the adsorption chamber (8) and the desorption chamber (10) is provided with a first regulating valve (15) , the adsorption channel (9) between the desorption chamber (10) and the cooling chamber (11) is provided with a second regulating valve (14), and the lower outlet of the adsorption channel (9) is provided with a third regulating valve ( 12).
The continuous multi-channel adsorption device according to claim 2, characterized in that: a pressure detector (19) and a gas concentration detector (20) are arranged at the gas outlet (21), and the pressure detector (19) ) and the gas concentration detector (20) are electrically connected to the first regulating valve (15).
The continuous multi-channel adsorption device according to claim 1, characterized in that: the upper part of the temporary storage chamber (17) is provided with a feeding port (18).
The continuous multi-channel adsorption device according to claim 1, characterized in that: the number of the adsorption channels (9) is 1-30.
An industrial waste gas treatment system, characterized in that it comprises a waste gas pipeline (1) and the adsorption device (4) according to any one of claims 1-5, the waste gas pipeline (1) and the first condenser (2) connection, the first condenser (2) is connected with the air inlet (16) of the adsorption device (4) via the fan (3).
The industrial waste gas treatment system according to claim 6, characterized in that: the desorption chamber (10) of the adsorption device (4) is connected with the high-temperature heat medium pipeline (7), and the desorption chamber (10) is connected with the first heat medium pipeline (7). The second condenser (5) is connected, and the top of the second condenser (5) is connected with the air inlet (16) of the adsorption device (4) through the fan (3).
The industrial waste gas treatment system according to claim 6, wherein the cooling chamber (11) is provided with a refrigerant pipeline (6).
The industrial waste gas treatment system according to claim 6, characterized in that: the adsorption channel (9) in the adsorption chamber (8) is filled with adsorption material, the thickness of the adsorption material is 200-1000mm, and the thickness of the adsorption material is 200-1000mm. The pore size is 1.5-30nm.
The treatment system of industrial waste gas according to claim 6, is characterized in that: treatment method comprises the following steps:

1) After the exhaust gas is cooled and condensed by the first condenser (2), it is introduced into the adsorption chamber (8) of the adsorption equipment (4) by the fan (3). The air outlet (21) discharges up to the standard;

2) The adsorbent material after adsorbing the exhaust gas is transported from the adsorption chamber (8) to the desorption chamber (10) through the adsorption channel (9) from top to bottom for desorption, and the adsorbent material in the temporary storage chamber (17) is supplemented to the adsorption channel (9) continue to adsorb the exhaust gas;

3) desorbing the adsorbent material in the desorption chamber (10), and the desorbed organic waste gas enters the subsequent treatment;

4) After the desorption is completed, the desorbed adsorbent is transported to the cooling chamber (11) from top to bottom for cooling and cooling, and then transported to the temporary storage chamber (17) through the lifting device (13) for recycling.