CN112138516A - Intelligent collecting and purifying system and method for ex-situ thermal desorption organic pollution waste gas - Google Patents

Abstract

An ectopic thermal desorption organic pollution waste gas intelligent collection and purification system and collection and purification method, the system comprises five high-temperature ectopic thermal desorption furnace, condensation box, waste liquid collection box, waste smoke circulation purification collection box and intelligent control module Parts are connected to each other. The organic pollutants are converted from liquid to gaseous state in the high-temperature ex-situ thermal desorption furnace, and enter the condensing box through the exhaust gas inlet pipe and exhaust gas inlet valve. It enters the waste liquid collection box from the waste liquid inlet pipe and is collected. The unliquefied waste gas is further condensed and collected through the porous condensing plate. Finally, the remaining waste smoke is transported to the waste smoke circulation purification box, and is stored in the residual smoke temporary storage chamber. Intelligent smoke detector identification, re-entering the high-temperature ex-situ thermal desorption furnace for heat treatment again, or entering the activated carbon storage cavity to be adsorbed and collected, the whole process will be controlled by the intelligent control module.

Description

A kind of ectopic thermal desorption organic pollution waste gas intelligent collection and purification system and collection and purification method

technical field

The invention relates to the technical field of organic pollution waste gas treatment, in particular to an intelligent collection and purification system for ectopic thermal desorption organic pollution waste gas.

technical background

At present, there are many exhaust gas collection systems, and the exhaust gas collection efficiency is also different. A system with high collection efficiency either has complicated equipment and is not easy to be popularized and used, or will generate more secondary pollutants. For example, the exhaust gas collection using water shower technology will generate a large amount of waste water, or the degree of intelligence is not high, and it is necessary to Manual operation.

Thermal desorption technology is widely used due to its high efficiency and thoroughness, and the exhaust gas it produces is likely to cause secondary pollution. Therefore, an exhaust gas purification and collection system is urgently needed. Therefore, the development of an efficient and simple ectopic thermal desorption organic pollution waste gas intelligent collection and purification system is very necessary to improve the waste gas purification and collection system.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to aim at the deficiencies of the above-mentioned prior art, and to provide an intelligent purification and collection system of ectopic thermal desorption organic pollution waste gas, which can solve the complex equipment caused by the pursuit of high-efficiency collection rate, the generation of secondary pollutants and The problem of low level of intelligence.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is to provide an intelligent collection and purification system and a collection and purification method for ectopic thermal desorption organic pollution waste gas, and the components include a high-temperature ectopic thermal desorption furnace, a condensation box, and a waste liquid. The specific structure and connection relationship of the components of the collection box, the waste smoke recycling and purification collection box and the intelligent control module are as follows:

The intelligent air pressure sensor of the high-temperature ectopic thermal desorption furnace is welded on the top of the furnace body and connected with the intelligent control module. The intelligent air pressure sensor measures the air pressure inside the furnace body in real time, and transmits the measured information to the intelligent control module in real time. The valve is welded on one side of the furnace body, the breathing valve is communicated with the outside world, the exhaust gas outlet is placed at the top of one side of the furnace body, and is connected with the exhaust gas inlet pipe of the condensing box. The bottom exhaust gas inlet on one side is connected;

The condensing box includes a waste gas inlet pipe, a waste gas inlet pipe valve, a condensate water inlet pipe, a condensate water inlet pipe intelligent valve, a waste gas distribution port, a spiral condenser pipe and a waste gas gathering port, and one end of the waste gas inlet pipe is thermally separated from the high temperature ectopic. The exhaust gas outlet of the attached furnace is connected, the other end of the exhaust gas inlet pipe is connected to the exhaust gas distribution port through the exhaust gas inlet pipe valve, and the exhaust gas distribution port is connected to the spiral condenser pipe. The water inlet pipe valve, the waste gas collection port is located at the lower end of the spiral condenser pipe, the waste gas enters the condensing box from the waste gas inlet pipe through the waste gas inlet pipe valve, and then disperses into the spiral condenser pipe through the condensed waste gas distribution port, and is discharged through the waste gas collection port after condensation. into the waste liquid collection box;

The waste liquid collection box includes a waste liquid inlet pipe, a residual gas inlet pipe, a porous condensate plate, a condensate water outlet pipe of the porous condensate plate, an intelligent valve of the condensate water outlet pipe, a one-way valve, an intelligent humidity sensor and a condensate water inlet of the porous condensate plate. The waste liquid inlet pipe is connected to the waste gas collection port of the condensation box, the waste gas inlet pipe is connected to the waste liquid collection box, and the vertical plates in the porous condensation plate are welded on the top of the waste liquid outer box at uniform intervals. The inclined plate is welded at a right angle at the top of the waste liquid outer tank at an angle of 45°. The condensate outlet pipe is connected to the porous condensate plate. The condensate outlet pipe of the porous condensate plate is provided with a condensate outlet pipe intelligent valve, and the intelligent humidity sensor is located in the The residual gas outlet pipe is connected to the intelligent control module. The top of the waste liquid outer box is provided with a residual gas inlet pipe. The one-way valve is installed at half the height of one side of the waste liquid collection box. The waste liquid inlet pipe flows into each porous condensing plate, and the condensed water flowing down from each porous condensing plate is discharged through the condensing water outlet pipe;

The waste smoke circulation purification collection box includes an activated carbon storage cavity and a residual smoke temporary storage cavity. The activated carbon storage cavity is located on the upper part of the exhaust gas circulation purification collection box. The activated carbon storage cavity includes a first intelligent vacuum pump, an air outlet pipe and a filter plug. The activated carbon storage cavity Filled with activated carbon, the air outlet pipe is located at the top of the activated carbon storage chamber, the first intelligent vacuum pump is installed on the air outlet pipe, and is connected with the intelligent control module, the filter plug is located at the connection between the air outlet pipe and the activated carbon storage chamber, and the residual smoke temporary storage chamber is located in the In the lower part of the waste smoke circulation purification collection box, the waste smoke temporary storage chamber includes a waste smoke filter plate, a first intelligent valve, an intelligent smoke detector, a waste smoke furnace body return pipe, a second intelligent vacuum pump and a second intelligent valve. The temporary storage chamber is connected with the residual gas inlet pipe, the intelligent smoke detector is installed on one side of the residual gas inlet pipe, and is connected with the intelligent control module, the return pipe of the waste smoke furnace body is connected with the bottom of the residual smoke temporary storage chamber, and the second intelligent valve and The second intelligent vacuum pump is installed on the return pipe of the waste smoke furnace body, and is connected with the intelligent control module; the residual smoke filter plate and the first intelligent valve are located on the top of the residual smoke temporary storage chamber, and are also connected with the intelligent control module;

The intelligent control module is a computer with an intelligent program installed. The intelligent control module is connected to the intelligent humidity sensor, the intelligent smoke detector, the intelligent valve of the condensate inlet pipe, the first intelligent valve, the second intelligent valve, The first intelligent vacuum pump and the second intelligent vacuum pump are connected by wires.

The furnace body is a vertical horse boiling furnace.

The condensing box is provided with distributed multi-branched spiral condensing pipes.

A porous condensation plate is arranged in the waste liquid collection box.

The porous condensing plate in the waste liquid collection box adopts a porous multi-row design.

The beneficial effects of the present invention are:

1. The exhaust gas collection and purification system uses the common condensation module, collection module and purification module to ensure the advantages of simple equipment and easy installation.

2. The condensing box in the exhaust gas collection and purification system adopts multiple small-diameter spiral condenser tubes, which increases the contact area between the exhaust gas and the condensate and improves the condensation efficiency.

3. In the exhaust gas collection and purification system, the porous condensing plate is used to continue to condense the high-temperature exhaust gas, and the spray device is not used to continue the condensation of the high-temperature exhaust gas, which reduces the generation of secondary pollution waste water.

4. The exhaust gas collection and purification system does not use a high-temperature heating device in the waste smoke circulation collection and purification box to purify and collect the collected waste gas that has not been condensed, but uses the intelligent control module to purify the residual smoke whose concentration exceeds a certain threshold. Re-extracted back to the high-temperature ectopic thermal desorption furnace to continue purification and collection, which simplifies the entire system. At the same time, the high-temperature ectopic thermal desorption furnace is fully utilized to improve the collection and purification rate.

5. The exhaust gas purification and collection system introduces intelligent humidity sensors, intelligent smoke detectors, intelligent valves and intelligent vacuum pumps and other equipment with a high degree of automation. At the same time, an intelligent control module is introduced to realize intelligent ectopic thermal desorption that can be opened and ended with one key. Organic pollution waste gas collection and purification system.

6. The gas-infrared chromatographic test of the ectopic thermal desorption direct discharge and the tail gas of the tail gas purification and collection system shows that the purification collection rate can reach more than 90%.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the intelligent collection and purification system for ectopic thermal desorption organic pollution waste gas according to the present invention.

FIG. 2 is a schematic structural diagram of the condensing box of the intelligent collection and purification system for ectopic thermal desorption organic polluted waste gas according to the present invention.

Figure 3-1 is a schematic diagram of the front structure of the collection box of the intelligent collection and purification system for ectopic thermal desorption organic pollution waste gas according to the present invention.

Figure 3-2 is a schematic diagram of the structure of the back of the collection box of the intelligent collection and purification system for ectopic thermal desorption organic pollution waste gas according to the present invention.

4 is a schematic structural diagram of a porous condensing plate of the intelligent collection and purification system for ectopic thermal desorption organic polluted waste gas according to the present invention.

5 is a schematic structural diagram of the waste smoke circulation purification collection box of the ectopic thermal desorption organic pollution waste gas intelligent collection and purification system according to the present invention.

Marked in the figure: high temperature ectopic thermal desorption furnace 100, intelligent air pressure sensor 101, breathing valve 102, waste gas outlet 103, waste gas inlet 104, condensing box 200, waste gas inlet pipe 202, waste gas inlet pipe valve 203, condensate box condensate water Inlet pipe 204, condensate inlet pipe intelligent valve 205, exhaust gas distribution port 206, spiral condenser pipe 207, exhaust gas collection port 208, collection tank 300, collection tank condensate water inlet pipe 302, waste liquid inlet 303, porous condensation plate 305, condensation Water outlet pipe 306, condensate water outlet pipe intelligent valve 307, one-way valve 308, intelligent humidity sensor 309, waste smoke circulation purification collection box 400, first intelligent vacuum pump 401, air outlet pipe 402, filter plug 403, activated carbon storage chamber 405, The residual smoke filter plate 406 , the first intelligent valve 407 , the residual smoke temporary storage chamber 408 , the intelligent smoke detector 409 , the waste smoke furnace body return pipe 410 , the second intelligent vacuum pump 411 , and the second intelligent valve 412 .

Detailed ways

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

First of all, it should be noted that, in the description of the present invention, unless otherwise expressly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, or The integral connection can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the description of the present invention, unless otherwise stated, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer" The orientation or positional relationship indicated by , "front end", "rear end", "head", "tail", etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, not An indication or implication that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, is not to be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

Example 1

As shown in FIGS. 1 to 5 , the intelligent purification and collection system of ectopic thermal desorption organic polluted waste gas according to the present invention includes a high-temperature ectopic thermal desorption furnace, a condensation box, a waste liquid collection box, and a waste smoke recycling purification collection box. and intelligent control module, the specific structure and connection relationship are:

The intelligent air pressure sensor 101 of the high temperature ectopic thermal desorption furnace is welded on the top of the furnace body 100 and connected with the intelligent control module; the breathing valve 102 is welded on one side of the furnace body 100, the breathing valve 102 is communicated with the outside world, and the breathing valve 102 can control the air pressure range in the furnace. The exhaust gas outlet 103 is placed at the top of one side of the furnace body, and is connected to the exhaust gas inlet pipe 202 of the condensing box. The exhaust gas furnace body return pipe 410 drawn from the exhaust gas circulation purification collection box is connected to the bottom exhaust gas inlet 104 on one side of the furnace body.

The condensate box 200 includes a waste gas inlet pipe 202, a waste gas inlet pipe valve 203, a condensate water inlet pipe 204, a condensate water inlet pipe intelligent valve 205, a waste gas distribution port 206, a spiral condenser pipe 207, and a waste gas collection port 208. The waste gas inlet pipe 202 One end is connected with the waste gas outlet 103 of the high temperature ectopic thermal desorption furnace, the other end of the waste gas inlet pipe 202 is connected with the waste gas distribution port 206 through the waste gas inlet pipe valve 203, the waste gas distribution port 206 is connected with the spiral condenser pipe 207, and the condensed water inlet pipe 204 is provided. On the top of the condensing outer box 201 , a condensing box condensing water inlet pipe 204 is provided with a condensing box condensing water inlet pipe valve 205 , and an exhaust gas collecting port 208 is provided at the lower end of the spiral condensing pipe 207 . The exhaust gas enters the condensing box 200 from the exhaust gas inlet pipe 202 through the exhaust gas inlet pipe valve 203, and is then dispersed into the spiral condenser pipe 207 through the condensed exhaust gas distribution port 206.

The waste liquid collection box 300 includes a waste liquid inlet pipe 303, a residual gas inlet pipe 304, a porous condensation plate 305, a perforated condensation plate condensation water outlet pipe 306, a porous condensation plate condensation water outlet pipe intelligent valve 307, a one-way valve 308, The intelligent humidity sensor 309 and the condensate water inlet pipe 310 of the porous condensing plate, the waste liquid inlet pipe 303 is connected to the waste gas collecting port 208 of the condensing box 200, the residual gas inlet pipe 304 is connected to the waste liquid collecting box 300, and the porous condensing plate 305 is connected to the waste liquid collecting box 300. The vertical plates are welded on the top of the waste liquid outer tank 301 at even intervals, and the inclined plates in the porous condensing plate 305 are obliquely welded at a right angle to the top of the waste liquid outer tank 301 at an angle of 45°. The condensed water outlet pipe 306 of the porous condensing plate is connected to the porous condensing plate 305 , and the condensed water outlet pipe 306 of the porous condensing plate is provided with an intelligent valve 307 for the condensing water outlet pipe of the porous condensing plate, and the condensing water inlet pipe 310 of the porous condensing plate is connected to the porous condensing plate 305 For connection, the upper part of the waste liquid collection box 300 is provided with a residual gas inlet pipe 304 , and the one-way valve 308 is installed at a half height of one side of the waste liquid collection box 300 . The intelligent humidity sensor 309 is set at the residual gas outlet pipe 304 and connected to the intelligent control module. The condensed waste liquid from the condensation tank 200 flows into each porous condensation plate 305 through the waste liquid inlet pipe 303. The condensed water is discharged through the condensed water outlet pipe 306 of the porous condensing plate.

The porous condensing plate 305 is made of stainless steel, and a large number of tiny through holes A2 are provided on the porous condensing plate 305 .

The waste smoke circulation purification collection box 400 includes an activated carbon storage chamber 405 and a residual smoke temporary storage chamber 408 . The activated carbon storage chamber 405 is located on the upper part of the exhaust gas circulation purification collection box 400. The activated carbon storage chamber 405 includes a first intelligent vacuum pump 401, an air outlet pipe 402 and a filter plug 403. The activated carbon storage chamber 405 is filled with activated carbon, and the air outlet pipe 402 is located in the activated carbon storage chamber. At the top of 405 , the first intelligent vacuum pump 401 is installed on the air outlet pipe 402 and connected to the intelligent control module, and the filter plug 403 is located at the connection between the air outlet pipe 402 and the activated carbon storage chamber 405 . The residual smoke temporary storage chamber 408 is located at the lower part of the exhaust gas circulation purification collection box 400, and the residual smoke temporary storage chamber 408 includes a residual smoke filter plate 406, a first intelligent valve 407, an intelligent smoke detector 409, and a waste smoke furnace body return pipe 410. The second intelligent vacuum pump 411 and the second intelligent valve 412, the residual smoke temporary storage chamber 408 is connected to the residual gas inlet pipe 304, the intelligent smoke detector 409 is installed on one side of the residual gas inlet pipe 304, and is connected to the intelligent control module, The waste smoke furnace body return pipe 410 is connected to the bottom of the residual smoke temporary storage chamber 408, the second intelligent valve 412 and the second intelligent vacuum pump 411 are installed on the waste smoke furnace body return pipe 410, and are connected with the intelligent control module; the residual smoke filter plate 406 and the first intelligent valve 407 are located at the top of the residual smoke temporary storage chamber 408, and are also connected to the intelligent control module.

The intelligent control module 500 is a computer with an intelligent program installed. The intelligent control module 500 and the intelligent humidity sensor 309 in the collection and purification system, the intelligent smoke detector 409, the condensate inlet pipe intelligent valve 205, and the first intelligent valve 407 , the second intelligent valve 412 , the first intelligent vacuum pump 401 and the second intelligent vacuum pump 411 are connected by wires 501 , 502 , 503 and 504 .

The condensing box 200 is provided with distributed multi-branched spiral condensing pipes 207, which increases the flow path of the exhaust gas, expands the contact area between the exhaust gas and the condensate, and improves the condensation efficiency of the exhaust gas.

The waste liquid collection box 300 has a porous condensing plate 305, which further condenses the exhaust gas from the condensing box to collect the organic pollution steam and water vapor in the exhaust gas to the maximum extent. At the same time, the perforation A2 of the porous condensing plate is the exhaust gas. The flow provides a way to provide a prerequisite for the subsequent purification of waste smoke;

The one-way valve 308 is the discharge port of the waste liquid, which can not only ensure a certain negative pressure in the collection box, but also realize the automatic discharge of the waste liquid;

The intelligent humidity sensor 309 can monitor the change of humidity in the collection box space in real time, and is also connected to the intelligent control module 500, and transmits the monitored information to the intelligent control module 500, which is the discriminative thermal desorption collected by the exhaust gas intelligent purification system. Whether the process stops the main sensing device.

The intelligent smoke detector 409 can monitor the change of smoke solubility in the residual smoke temporary storage chamber in real time, and is also connected to the intelligent control module 500, and transmits the monitored information to the intelligent control module 500, which is an intelligent exhaust gas collection and purification system. The main sensing device for judging whether the residual smoke is re-extracted to the high-temperature ex-situ thermal desorption furnace 100 to be processed again.

The residual smoke filter plate 406 can isolate the residual smoke, and at the same time discharge the exhaust gas to the activated carbon storage chamber 405 to be integrated with the atmosphere. The first intelligent vacuum pump 401 makes the entire intelligent exhaust gas purification and collection system in a negative pressure state.

The first intelligent valve 407 is connected to the intelligent control module 500. When the intelligent smoke detector 409 identifies that the solubility of residual smoke is less than a certain threshold, the intelligent control module 500 will issue an instruction to make the first intelligent valve 407 open, and at the same time, The second intelligent valve 412 and the second intelligent vacuum pump 411 in the waste smoke furnace body return pipe 410 are closed, so that all the residual smoke in the residual smoke temporary storage chamber 408 enters the activated carbon storage chamber 405, which speeds up the end of the thermal desorption process.

The activated carbon storage chamber 405 can absorb other harmful gases in the exhaust gas.

The first intelligent vacuum pump 401 can make the entire intelligent waste gas purification and collection system in a negative pressure state, and is connected to the intelligent control module 500 at the same time. When the intelligent humidity sensor 309 recognizes that the humidity of the waste liquid collection box 300 is lower than a certain threshold, the first An intelligent vacuum pump 401 will stop working, ending the entire process of ectopic thermal desorption.

Example 2

The collection and purification method of the ectopic thermal desorption organic pollution waste gas intelligent collection and purification system according to the present invention includes the following specific operation steps:

1. When the organic pollutants and water and other substances in the high temperature ectopic thermal desorption furnace 100 evaporate, decompose and burn, the air pressure inside the furnace body increases, and the intelligent air pressure sensor 101 monitors the pressure inside the furnace body in real time. When the air pressure exceeds a certain value, the intelligent control module 500 receives the information from the intelligent air pressure sensor 101 and issues an instruction, so that the first intelligent vacuum pump 401 and the second intelligent vacuum pump 411 in the collection system, the condensate inlet pipe intelligent valve 205, the condensate water Outlet pipe smart valve 307 and second smart valve 412 are open.

2. The waste gas is drawn out from the high-temperature ex-situ thermal desorption furnace 100, and enters the condensing box 200 through the waste gas inlet pipe 202 and the waste gas inlet pipe valve 203, and is diverted to the multi-branched spiral condenser pipes 207 through the waste gas distribution port 206 to be condensed and condensed. The condensed water collected in the exhaust gas collection port 208 is transported to the waste liquid collection tank 300. During this period, the condensed water in the condensed water inlet pipe 204 and the condensed water inlet pipe intelligent valve 205 has been entering into the condensing tank. to condensation.

3. The condensed liquid and waste gas enter the collection box 300 through the waste liquid inlet pipe 303, and part of the waste gas that is condensed into liquid is collected in the collection box 300, while the uncondensed waste smoke passes through the porous condensing plate 305, and finally Enter the residual smoke temporary storage chamber 408 through the residual gas inlet pipe 304; during this period, the condensed water from the condensing box 200 enters the porous condensing plate 305 through the condensing water inlet pipe 302 of the porous condensing plate 300, and the condensed water from the porous condensing plate 300 The water outlet pipe 306 flows out of the porous condensing plate 305 to ensure the condensation function of the porous condensing plate 305. At the same time, the intelligent humidity sensor 309 is also monitoring the humidity in the collection box in real time, and sends a signal to the intelligent control module 500. The waste liquid is discharged through the one-way valve 308 at a capacity.

4. The waste smoke enters the residual smoke temporary storage cavity 408 from the residual gas inlet pipe 304. At this time, the intelligent smoke detector 409 will monitor the smoke solubility in the residual smoke temporary storage cavity 408, and transmit the monitoring information to the intelligent control in real time. Module 500, when the solubility exceeds a certain threshold, the intelligent control module 500 will send instructions to the second intelligent vacuum pump 411 and the second intelligent valve 412 to make them operate, and extract the smoke inside the residual smoke temporary storage chamber 408 into the Go to the high-temperature ex-situ thermal desorption furnace 100 for high-temperature treatment again, and then re-enter the residual smoke temporary storage chamber 408 through the condensation box 200 and the waste liquid collection box 300, and then be monitored by the intelligent smoke detector 409, if the concentration is still higher than a certain level. Once the threshold value is reached, the above steps are continued; if the solubility of the smoke in the residual smoke temporary storage chamber 408 is lower than a certain threshold value, the intelligent control module 500 sends an instruction to the second intelligent vacuum pump 411 and the second intelligent valve 412, The operation is stopped, and at the same time, the first intelligent valve 407 is opened, so that all the waste smoke enters the activated carbon storage chamber 405, and is further adsorbed and purified by the activated carbon therein.

5. When the intelligent humidity sensor 309 in the waste liquid collection box 300 monitors that the humidity of the waste liquid collection box 300 is lower than a certain threshold, the intelligent control module 500 will issue an instruction to shut down or turn off the first intelligent vacuum pump 401, and the high temperature is in a different position. The thermal desorption furnace 100 and the condensed water inlet pipe intelligent valve 205 and the condensed water outlet pipe intelligent valve 307 are completed, so far the entire thermal desorption process ends.

Claims (6)

1. The utility model provides an dystopy thermal desorption organic pollution waste gas intelligence collection clean system, component element include high temperature dystopy thermal desorption stove, the condensing box, the waste liquid collecting box, and the exhaust fume circulation purifies collecting box and intelligent control module, its characterized in that, the concrete structure and the connection relation of component element are:

the intelligent air pressure sensor of the high-temperature ectopic thermal desorption furnace is welded at the top of the furnace body and is connected with the intelligent control module, the intelligent air pressure sensor measures the air pressure in the furnace body in real time and transmits the measured information to the intelligent control module in real time, the breather valve is welded at one side of the furnace body and is communicated with the outside, the waste gas outlet is arranged at the top of one side of the furnace body and is connected with the waste gas inlet pipe of the condensing box, and the waste gas furnace body backflow pipe led out from the waste gas circulating and purifying collecting box is connected from the waste gas inlet at the bottom of one;

the condenser comprises a waste gas inlet pipe, a waste gas inlet pipe valve, a condensed water inlet pipe intelligent valve, a waste gas diversion port, a spiral condenser pipe and a waste gas gathering port, wherein one end of the waste gas inlet pipe is connected with a waste gas outlet of the high-temperature ex-situ heat desorption furnace, the other end of the waste gas inlet pipe is connected with the waste gas diversion port through the waste gas inlet pipe valve, the waste gas diversion port is connected with the spiral condenser pipe, the condensed water inlet pipe is arranged at the top of the condensation outer box, the condensed water inlet pipe is provided with the condensed water inlet pipe valve, and the waste;

the waste liquid collecting box comprises a waste liquid inlet pipe, a residual gas inlet pipe, a porous condensing plate condensed water outlet pipe, a condensed water outlet pipe intelligent valve, a check valve, an intelligent humidity sensor and a porous condensing plate condensed water inlet pipe, wherein the waste liquid inlet pipe is connected with a waste gas gathering port of the condensing box, the residual gas inlet pipe is connected with the waste liquid collecting box, vertical plates in the porous condensing plate are welded at the top of the waste liquid collecting box at uniform intervals, inclined plates in the porous condensing plate are obliquely welded at a straight angle of 45 degrees at the top of the waste liquid outer box, the condensed water outlet pipe is connected with the porous condensing plate, the condensed water outlet pipe intelligent valve is arranged on the porous condensing plate condensed water outlet pipe, the porous condensing plate condensed water inlet pipe is connected with the porous condensing plate, the intelligent humidity sensor is arranged at the residual gas outlet, the one-way valve is arranged on one side of the waste liquid collecting box, and the intelligent humidity sensor is arranged in the waste liquid collecting box;

the waste smoke circulating and purifying collecting box comprises an active carbon storage cavity and a residual smoke temporary storage cavity, the active carbon storage cavity is positioned on the upper portion of the waste gas circulating and purifying collecting box and comprises an intelligent vacuum pump, an air outlet pipe and a filtering plug, the active carbon storage cavity is filled with active carbon, the air outlet pipe is positioned at the top of the active carbon storage cavity, a first intelligent vacuum pump is installed on the air outlet pipe and connected with an intelligent control module, the filtering plug is positioned at the joint of the air outlet pipe and the active carbon storage cavity, the residual smoke temporary storage cavity is positioned at the lower portion of the waste gas circulating and purifying collecting box and comprises a residual smoke filter plate, a first intelligent valve, an intelligent smoke sensor, a waste smoke furnace body backflow pipe, a second intelligent vacuum pump and a second intelligent valve, the residual smoke temporary storage cavity is connected with a residual gas inlet pipe, the intelligent smoke sensor is installed on one side of the residual gas and connected with the intelligent control module, and the waste smoke backflow pipe is connected, the second intelligent valve and the intelligent vacuum pump are arranged on the waste smoke furnace body return pipe and are connected with the intelligent control module; the residual smoke filtering plate and the first intelligent valve are positioned at the top of the residual smoke temporary storage cavity and are also connected with the intelligent control module;

the intelligent control module is a computer provided with an intelligent program, and the intelligent control module is connected with an intelligent humidity sensor, an intelligent smoke sensor, a condensate inlet pipe intelligent valve, a first intelligent valve, a second intelligent valve, a first intelligent vacuum pump and a second intelligent vacuum pump in the collection and purification system through electric wires.

2. The intelligent ex-situ thermal desorption organic pollutant waste gas collecting and purifying system according to claim 1, wherein the furnace body is a vertical muffle furnace.

3. The intelligent ex-situ thermal desorption organic pollutant waste gas collecting and purifying system according to claim 1, wherein a plurality of distributed spiral condensing pipes are arranged in the condensing tank.

4. The intelligent collection and purification system for ex-situ thermal desorption organic polluted exhaust gas as claimed in claim 1, wherein a porous condensation plate is arranged in the waste liquid collection box.

5. The intelligent ex-situ thermal desorption organic pollutant waste gas collecting and purifying system according to claim 1, wherein the porous condensation plates in the waste liquid collecting box are in a porous multi-row design.

6. The collecting and purifying method of the intelligent collecting and purifying system for the ex-situ thermal desorption organic polluted waste gas as claimed in claim 1, which comprises the following specific operation steps:

(1) when substances such as organic pollutants, water and the like in the high-temperature ectopic thermal desorption furnace (100) are evaporated, decomposed and combusted, the air pressure in the furnace body is increased, at the moment, the intelligent air pressure sensor (101) monitors the pressure in the furnace body in real time, and when the air pressure exceeds a certain value, the intelligent control module (500) receives the information of the intelligent air pressure sensor (101) and sends an instruction, so that a first intelligent vacuum pump (401) and a second intelligent vacuum pump (411), a condensate water inlet pipe intelligent valve (205), a condensate water outlet pipe intelligent valve (307) and a second intelligent valve (412) in a collecting system are opened;

(2) the waste gas is extracted from the high-temperature ectopic heat desorption furnace (100), the waste gas inlet pipe valve (203) enters the condensing tank (200) through the waste gas inlet pipe (202), the waste gas is shunted to the spiral condensing pipe (207) through the waste gas shunting port (206) to be condensed, condensed condensate water is collected at the waste gas collecting port (208) and then is conveyed to the waste liquid collecting tank (300), and the condensate water of the condensing tank (300) enters the condensing tank from the condensate water inlet pipe (204) and the condensate water inlet pipe intelligent valve (205) all the time to perform the condensation function;

(3) the waste gas condensed into liquid and the waste gas enter a collecting box (300) through a waste liquid inlet pipe (303), part of the waste gas condensed into liquid is collected in the collecting box (300), and the waste smoke which is not condensed passes through a porous condensing plate (305) and finally enters a residual smoke temporary storage cavity (408) through a residual gas inlet pipe (304); during the period, condensed water from the condenser tank (200) enters the porous condenser plate (305) through a condensed water inlet pipe (302) of the porous condenser plate (300) and flows out from a condensed water outlet pipe (306) of the porous condenser plate (305), meanwhile, the intelligent humidity sensor (309) monitors the humidity in the collecting tank in real time and transmits a signal to the intelligent control module (500), and when the waste liquid reaches a certain capacity, the waste liquid is discharged through the one-way valve (308);

(4) waste smoke enters a residual smoke temporary storage cavity (408) from a residual gas inlet pipe (304), at the moment, an intelligent smoke sensor (409) can monitor the smoke solubility in the residual smoke temporary storage cavity (408) and transmit monitoring information to an intelligent control module (500) in real time, when the solubility exceeds a certain threshold value, the intelligent control module (500) can send an instruction to a second intelligent vacuum pump (411) and a second intelligent valve (412) to enable the intelligent control module to operate, smoke in the residual smoke temporary storage cavity (408) is extracted and enters a high-temperature ex-situ heat desorption furnace (100) for high-temperature treatment again, then enters the residual smoke temporary storage cavity (408) again through a condensing box (200) and a waste liquid collecting box (300), and is monitored by the intelligent smoke sensor (409), if the concentration is higher than a certain threshold value, the steps are continued, and if the smoke solubility in the residual smoke temporary storage cavity (408) is lower than a certain threshold value, the intelligent control module (500) sends an instruction to the second intelligent vacuum pump (411) and the second intelligent valve (412) to stop running, and meanwhile, the first intelligent valve (407) is opened to enable the exhaust smoke to enter the active carbon storage cavity (405) and be further adsorbed and purified by the active carbon in the active carbon storage cavity;

(5) when the intelligent humidity sensor (309) in the waste liquid collecting box (300) monitors that the humidity of the waste liquid collecting box (300) is lower than a certain threshold value, the intelligent control module (500) can send an instruction to shut down or close the first intelligent vacuum pump (401), the high-temperature ectopic thermal desorption furnace (100), the condensate inlet pipe intelligent valve (205) and the condensate outlet pipe intelligent valve (307), and the whole thermal desorption process is finished.

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