Wire and cable combustion waste gas purification treatment system and method

Abstract

The invention discloses a purification treatment system and method for electric wire and cable combustion waste gas in the technical field of cable combustion tests. The purification treatment system comprises a gas washing module, a purification module and an adsorption box which are sequentially arranged in the waste gas flowing direction. The gas washing module comprises a spraying box, a rotational flow tower and a water tank, the spraying box is mounted above the rotational flow tower, a gas phase outlet in the top of the rotational flow tower is communicated with the bottom of the spraying box, the water tank is mounted below the rotational flow tower, and the top end of the water tank is communicated with a liquid phase outlet in the bottom of the rotational flow tower; the purification module comprises a washing box, a communicating vertical pipe and a treatment box, the treatment box is installed under the washing box, and the top of the treatment box communicates with the bottom of the washing box through the communicating vertical pipe; a gas inlet of the adsorption box is communicated with a gas outlet in the bottom of the treatment box. According to the invention, complete purification of waste gas generated by wire and cable combustion is realized, the treatment efficiency of the waste gas generated by wire and cable combustion can be improved, and the operation and maintenance cost can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of cable combustion tests, and in particular to a system and method for purifying and treating waste gas from combustion of electric wires and cables. Background Art

[0002] When conducting combustion performance testing on wires and cables, the combustion of wires and cables will produce a series of exhaust gases that do not meet national emission standards.

[0003] At present, there are two traditional methods for waste gas treatment. The first is to use a spray tower to spray the waste gas. This method has the advantage of low operating and maintenance costs, but when conducting combustion performance testing on wires and cables, the exhaust gas emission rate is relatively fast, the treatment efficiency of this method is slow, and it is easy to produce smoke in a low temperature environment; the second method is to use secondary incineration, spray tower and activated carbon adsorption to treat the waste gas. This method can fully purify the waste gas, but the secondary incineration of the waste gas requires the use of a high-temperature furnace, and the operating and maintenance costs are relatively high.

[0004] Therefore, how to effectively treat the exhaust gas generated by the combustion performance test of wires and cables and significantly reduce the operation and maintenance costs has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0005] In view of this, the object of the present invention is to provide a wire and cable combustion waste gas purification treatment system to address the above technical problems.

[0006] The technical solution adopted by the present invention is: a wire and cable combustion waste gas purification treatment system, comprising: a gas washing module, a purification module, an adsorption box and an induced draft fan;

[0007] The scrubbing module comprises a spray box, a cyclone tower and a water tank, wherein the spray box is installed above the cyclone tower, and the gas phase outlet at the top of the cyclone tower is connected to the bottom of the spray box, so that the water mist sprayed from the spray box is mixed with the exhaust gas in the cyclone tower; the water tank is installed below the cyclone tower, and the top of the water tank is connected to the liquid phase outlet at the bottom of the cyclone tower, so that the liquid phase after gas-liquid separation in the cyclone tower flows into the water tank;

[0008] The purification module includes a washing box, a connecting vertical pipe and a processing box. The air inlet at the top of the washing box is connected to the exhaust port at the top of the spray box through a connecting pipeline. The processing box is installed directly below the washing box. The top of the processing box is connected to the bottom of the washing box through a connecting vertical pipe, so that the washed exhaust gas flows into the processing box for electrostatic dust removal.

[0009] The air inlet of the adsorption box is connected to the exhaust port at the bottom of the treatment box through a connecting pipeline, and the adsorption box can perform activated carbon adsorption on the exhaust gas;

[0010] The induced draft fan is communicated with the exhaust port of the adsorption box.

[0011] Preferably, the spray box includes a hollow ball demisting layer and a spray cooling layer, the hollow ball demisting layer is installed above the spray cooling layer, the water tank includes a circulating water tank and an auxiliary water tank, the spray pipe in the spray cooling layer is connected to the circulating water pump in the auxiliary water tank through a water supply pipeline, the circulating water tank is installed directly below the cyclone tower, and the circulating water tank is connected to the auxiliary water tank.

[0012] Preferably, the circulating water tank is connected to the wastewater treatment module through a connecting pipeline, and the wastewater treatment module includes a mixing tank and a reaction tank arranged in parallel and connected, a stirring mechanism is installed in the mixing tank, a solid-liquid separation tank is arranged inside the reaction tank, the solid-liquid separation tank is located on the side of the reaction tank away from the mixing tank, and a scraping mechanism is installed on the top of the solid-liquid separation tank, a dissolving mechanism is installed on one side of the reaction tank, and a coagulant delivery pipe is connected to the other side of the reaction tank. Preferably, the washing box is fixedly installed on the supporting platform, an air intake box is installed on the top of the washing box, and the air intake box is connected to the air outlet of the spray box; a spray pipe is installed in the washing box, a plurality of nozzles are installed on the spray pipe, and one end of the spray pipe is connected to the water supply tank installed on the supporting platform.

[0013] Preferably, the adsorption box includes a box body and an activated carbon adsorption module, and multiple activated carbon adsorption modules are installed in the inner cavity of the box body along the direction perpendicular to the axis of the box body. The top of the box body is provided with an observation and feeding port corresponding to the activated carbon adsorption module; the bottom of the box body is provided with a discharge port corresponding to the activated carbon adsorption module.

[0014] Preferably, the induced draft fan is installed in a noise reduction sound insulation box.

[0015] Preferably, the noise reduction soundproof box is formed by splicing a plurality of sound insulation unit panels, the sound insulation unit panels include an outer panel, a sound insulation layer, an inner panel and a keel, the keel is fixedly connected between the outer panel and the inner panel, and the outer panel, the inner panel and the keel surround a sound insulation filling cavity, the sound insulation layer is filled in the sound insulation filling cavity, and the sound insulation layer includes a rock wool layer, a glass wool layer and an alkali-free glass fiber cloth layer arranged sequentially from the outside to the inside.

[0016] Another object of the present invention is to provide a method for purifying waste gas from combustion of electric wires and cables, the method comprising the following steps:

[0017] Step 1: pass the waste gas into the cyclone tower, spray and cool the waste gas in the cyclone tower through the spray box and achieve gas-liquid separation of the waste gas;

[0018] Step 2: First, the waste gas after gas-liquid separation is passed into a washing box for washing, and then the washed waste gas is passed through a treatment box for electrostatic dust removal;

[0019] Step 3: Pass the waste gas after electrostatic dust removal into the adsorption box for activated carbon adsorption.

[0020] Beneficial effects of the present invention:

[0021] The present invention firstly performs centrifugal separation of paint mist on the waste gas generated by the combustion of wires and cables through a cyclone tower, and cooperates with a spray box to spray the paint mist, which can not only mix the mist water with the paint mist and improve the gas-liquid separation efficiency of the paint mist under the action of centrifugal force, but also reduce the temperature of the waste gas; then, the waste gas after gas-liquid separation is washed by a washing box, and the water-soluble gas and chloride ions in the waste gas can be effectively removed by acid-base neutralization reaction, and the ionization effect and electrostatic adsorption effect of the treatment box on the waste gas can ionize the remaining ultrafine smoke in the waste gas into positive and negative ions and adsorb and capture them, thereby realizing complete gas-solid separation of the waste gas; finally, the harmful gas in the waste gas is adsorbed by the adsorption box, thereby realizing complete purification of the waste gas generated by the combustion of wires and cables, which can not only improve the treatment efficiency of the waste gas generated by the combustion of wires and cables, but also reduce the operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the wire and cable combustion waste gas purification treatment system of the present invention;

[0023] Figure 2 This is the front view of the scrubber module;

[0024] Figure 3 is a side view of the scrubber module;

[0025] Figure 4 It is a structural schematic diagram of the purification module;

[0026] Figure 5 It is a top view of the adsorption box;

[0027] Figure 6 It is a bottom view of the adsorption box;

[0028] Figure 7 This is the main view of the wastewater treatment module;

[0029] Figure 8 is a top view of a wastewater treatment module;

[0030] Fig. 9 This is the position relationship diagram of the induced draft fan and the noise reduction sound insulation box;

[0031] Fig.10 It is a structural schematic diagram of the sound insulation unit panel.

[0032] Description of reference numerals in the figures:

[0033] 100. Gas washing module;

[0034] 110, spray box; 111, hollow ball demisting layer; 112, spray cooling layer; 120, cyclone tower; 130, water tank; 131, circulating water tank; 132, auxiliary water tank; 133, water supply pipeline; 134, circulating water pump;

[0035] 200. Purification module;

[0036] 210, washing box; 220, connecting vertical pipe; 230, processing box; 231, positive and negative electrodes; 240, supporting platform; 250, air intake box; 260, spray pipe; 270, spray head; 280, water supply box; 290, electric box;

[0037] 300, adsorption box;

[0038] 310, box body; 311, observation feed port; 312, discharge port; 320, activated carbon adsorption module; 330, waste gas inlet; 340, waste gas outlet;

[0039] 400, induced draft fan;

[0040] 500. Wastewater treatment module;

[0041] 510, mixing tank; 520, reaction tank; 530, stirring mechanism; 540, solid-liquid separation tank; 550, scraping mechanism; 560, air dissolving mechanism; 561, air dissolving tank; 562, air dissolving pump; 563, air dissolving pipe; 564, releaser; 570, coagulant delivery pipe;

[0042] 600, noise reduction soundproof box;

[0043] 610, outer panel; 620, sound insulation layer; 621, rock wool layer; 622, glass wool layer; 623, alkali-free glass fiber cloth layer; 630, inner panel; 640, keel;

[0044] 700. Combustion test equipment. DETAILED DESCRIPTION

[0045] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.

[0046] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0049] Examples, such as Figure 1-Figure 10 As shown, a wire and cable combustion waste gas purification system includes: an air washing module 100, a purification module 200, an adsorption box 300 and an induced draft fan 400.

[0050] The scrubbing module 100 includes a spray box 110, a cyclone tower 120 and a water tank 130. The spray box 110 is installed above the cyclone tower 120, and the gas phase outlet at the top of the cyclone tower 120 is connected to the bottom of the spray box 110, so that the water mist sprayed from the spray box 110 is mixed with the exhaust gas in the cyclone tower 120; the water tank 130 is installed below the cyclone tower 120, and the top of the water tank 130 is connected to the liquid phase outlet at the bottom of the cyclone tower 120, so that the liquid phase after gas-liquid separation in the cyclone tower 120 flows into the water tank 130.

[0051] The purification module 200 includes a washing box 210, a connecting vertical pipe 220 and a processing box 230. The air inlet at the top of the washing box 210 is connected to the exhaust port at the top of the spray box 110 through a connecting pipe. The processing box 230 is installed directly below the washing box 210, and the top of the processing box 230 is connected to the bottom of the washing box 210 through the connecting vertical pipe 220, so that the exhaust gas after washing and purification flows into the processing box 230 for electrostatic dust removal.

[0052] The air inlet of the adsorption box 300 is connected to the exhaust port at the bottom of the processing box 230 through a connecting pipeline, and the adsorption box 300 can perform activated carbon adsorption on the exhaust gas.

[0053] The induced draft fan 400 is communicated with the exhaust port of the adsorption box 300 to drive the exhaust gas to flow.

[0054] The present invention firstly performs centrifugal separation of paint mist on the waste gas generated by the combustion of wires and cables through the cyclone tower 120, and cooperates with the spray box 110 to spray the paint mist, which can not only make the mist water and the paint mist fully mixed, improve the gas-liquid separation efficiency of the paint mist under the action of centrifugal force, but also reduce the temperature of the waste gas; then, the waste gas after gas-liquid separation is washed by the washing box 210, and the water-soluble gas and chloride ions in the waste gas can be effectively removed by the acid-base neutralization reaction, and the ionization effect and electrostatic adsorption effect of the treatment box 230 on the waste gas can ionize the remaining ultrafine smoke in the waste gas into positive and negative ions and adsorb and capture them, so as to realize gas-solid separation of the waste gas; finally, the harmful gas in the waste gas is adsorbed by the adsorption box 300, so as to realize the complete purification of the waste gas generated by the combustion of wires and cables, which can not only improve the treatment efficiency of the waste gas generated by the combustion of wires and cables, but also reduce the operation and maintenance costs.

[0055] Examples, such as Figure 1-Figure 10 As shown, a wire and cable combustion waste gas purification system includes: an air washing module 100, a purification module 200, an adsorption box 300, an induced draft fan 400, a wastewater treatment module 500 and a noise reduction and sound insulation box 600.

[0056] The scrubbing module 100 includes a spray box 110, a cyclone tower 120 and a water tank 130. The spray box 110 includes a hollow ball demisting layer 111 and a spray cooling layer 112. The hollow ball demisting layer 111 is fixedly installed above the spray cooling layer 112. The spray cooling layer 112 is installed above the cyclone tower 120, and the gas phase outlet at the top of the cyclone tower 120 is completely connected with the bottom of the spray cooling layer 112, so that the water mist sprayed by the spray head in the spray box 110 enters the cyclone tower 120, and the water mist entering the cyclone tower 120 is first fully mixed with the paint mist of the exhaust gas in the cyclone tower 120. After the water mist adheres to the smoke in the paint mist, the exhaust gas is separated into gas and liquid under the action of centrifugal force.

[0057] The water tank 130 includes a circulating water tank 131 and an auxiliary water tank 132. The circulating water tank 131 is installed below the cyclone tower 120, and the top of the water tank 130 is connected to the liquid phase outlet at the bottom of the cyclone tower 120, so that the liquid phase after gas-liquid separation in the cyclone tower 120 flows into the water tank 130; the auxiliary water tank 132 is installed at the lower side of the cyclone tower 120, and a circulating water pump 134 is installed in the auxiliary water tank 132. The circulating water pump 134 is connected to a spray pipe (not shown in the figure) in the spray cooling layer 112 through a water supply pipeline 133. A plurality of nozzles are installed on the spray pipe for uniformly spraying water mist into the paint mist in the cyclone tower 120.

[0058] The purification module 200 includes a washing box 210, a connecting vertical pipe 220, a processing box 230 and a supporting platform 240. The washing box 210 is fixedly installed above the supporting platform 240. An air intake box 250 is installed on the top of the washing box 210. The air inlet at the top of the air intake box 250 is connected to the air outlet of the spray box 110 through a connecting pipe. The bottom end of the air intake box 250 is connected to the top of the washing box 210, and the air outlet at the bottom end of the air intake box 250 is in a cone shape with a small top and a large bottom, so that the exhaust gas in the air intake box 250 can be evenly distributed in the washing box 210. A spray pipe 260 is installed in the washing box 210, and a plurality of nozzles 270 for spraying washing liquid on the exhaust gas are installed on the spray pipe 260. One end of the spray pipe 260 extends to the outside of the washing box 210 and is connected to a water supply tank 280 installed on the supporting platform 240. The water supply tank 280 is used to supply washing liquid to the nozzles 270.

[0059] Positive and negative electrodes 231 are installed on the inner wall of the processing box 230, and an electric box 290 is fixedly connected to the outer wall of the supporting platform 240. The electric box 290 and the processing box 230 are connected by electric wires. The top of the processing box 230 is connected to the bottom of the washing box 210 through a plurality of connecting vertical pipes 220, so that the waste gas washed and purified in the washing box 210 can flow into the processing box 230. An electrostatic treatment electric field is formed in the processing box 230 to treat the exhaust gas entering the processing box 230. The treated ultrafine smoke is broken down by high voltage to form positive and negative ions, which are then captured by electrostatic adsorption, thereby purifying the smoke exhaust gas, and the black smoke purification efficiency is high.

[0060] The adsorption box 300 includes a box body 310 and an activated carbon adsorption module 320. An exhaust gas inlet 330 is provided at one end of the box body 310, and an exhaust gas outlet 340 is provided at the other end of the box body 310. The exhaust gas inlet 330 is connected to the exhaust gas outlet of the treatment box 230 through a connecting pipe. There are multiple activated carbon adsorption modules 320, and multiple activated carbon adsorption modules 320 are installed in the inner cavity of the box body 310 along the direction perpendicular to the axis of the box body 310 to perform activated carbon adsorption on the exhaust gas.

[0061] This setting is because: compared with the structural setting of conventional bag dust collectors, the electrostatic ionization treatment after washing is efficient and energy-saving. The structure of the entire treatment device is compact and the spatial layout is reasonable, which is convenient for staff to inspect and maintain.

[0062] An observation and feeding port 311 corresponding to the activated carbon adsorption module 320 is provided at the top of the box body 310 ; a discharge port 312 corresponding to the activated carbon adsorption module 320 is provided at the bottom of the box body 310 , so as to quickly complete the replacement operation of the activated carbon.

[0063] The induced draft fan 400 is in communication with the exhaust gas outlet 340 of the adsorption box 300 , and is used to drive the exhaust gas to flow sequentially among the spray box 110 , the washing box 210 , the processing box 230 and the adsorption box 300 .

[0064] Preferably, the induced draft fan 400 is installed in a noise reduction and sound insulation box 600, so as to reduce the noise pollution caused by the induced draft fan 400 to the environment during operation through the sound insulation effect of the noise reduction and sound insulation box 600.

[0065] Specifically, the noise reduction soundproof box 600 is a rectangular structure formed by splicing a plurality of sound insulation unit panels, the sound insulation unit panel includes an outer panel 610, a sound insulation layer 620, an inner panel 630 and a keel 640, the keel 640 is fixedly connected between the outer panel 610 and the inner panel 630, the keel 640 is fixedly connected to the outer panel 610 and the inner panel 630 by welding, and the outer panel 610, the inner panel 630 and the keel 640 surround a sound insulation filling cavity; the sound insulation layer 620 It is filled in the sound insulation filling cavity, and the sound insulation layer 620 includes a rock wool layer 621, a glass wool layer 622 and an alkali-free glass fiber cloth layer 623 which are arranged in sequence from the outside to the inside, that is, the rock wool layer 621 is on the outside, the rock wool layer 621 is in contact with the outer panel 610, the glass wool layer 622 is located in the middle, the glass wool layer 622 is respectively connected to the rock wool layer 621 and the alkali-free glass fiber cloth layer 623, the alkali-free glass fiber cloth layer 623 is located on the inside, and the alkali-free glass fiber cloth layer 623 is in contact with the inner panel 630.

[0066] Two adjacent sound insulation unit panels are welded together via a keel 640, and the outer panel 610 and the inner panel 630 are made of galvanized sheet metal, so that the induced draft fan 400 can be used in areas where the induced draft fan 400 cannot be installed due to noise factors, thereby expanding the applicability of the purification system.

[0067] In another embodiment, if Figure 1 , Figure 7 and Figure 8 As shown, the circulating water tank 131 is connected to the wastewater treatment module 500 through a connecting pipe, so that the wastewater treatment module 500 purifies the wastewater and filters out impurities in the wastewater inside the circulating water tank 131, thereby ensuring the normal operation of the scrubber module 100.

[0068] Specifically, the wastewater treatment module 500 includes a mixing tank 510 and a reaction tank 520 that are arranged in parallel and connected. The mixing tank 510 is fixedly installed at one end of the reaction tank 520, and a stirring mechanism 530 is installed in the mixing tank 510. The stirring mechanism 530 includes a driving motor and a stirring paddle. The driving motor is fixedly installed on the top of the mixing tank 510, and the stirring paddle is installed inside the mixing tank 510. The top end of the stirring paddle is transmission-connected to the driving motor, and is used to stir and mix the wastewater in the mixing tank 510 that is regularly discharged from the circulating water tank 131.

[0069] A solid-liquid separation tank 540 is arranged inside the reaction tank 520. The solid-liquid separation tank 540 is located on the side of the reaction tank 520 away from the mixing tank 510, and a scraper mechanism 550 is installed on the top of the solid-liquid separation tank 540. A gas dissolving mechanism 560 connected to the reaction tank 520 is installed on one side of the reaction tank 520, and a coagulant delivery pipe 570 for adding a coagulant to the reaction tank 520 is connected on the other side of the reaction tank 520.

[0070] The air dissolving mechanism 560 includes an air dissolving pipe 563, an air dissolving pump 562, an air dissolving tank 561 and a releaser 564. The air dissolving pipe 563 is fixedly installed on one side of the reaction tank 520, the air dissolving pump 562 is fixedly installed above the solid-liquid separation tank 540, the releaser 564 is fixedly installed in the reaction tank 520, and the releaser 564 is located outside the solid-liquid separation tank 540. The air inlet of the air dissolving pump 562 is connected to the air dissolving tank 561 through the air dissolving pipe 563, and the air outlet of the air dissolving pump 562 is connected to the releaser 564 through the air dissolving pipe 563.

[0071] This arrangement is because: conveying coagulant into the reaction tank 520 can realize reaction and precipitation at the same time in the same equipment. Compared with the conventional reaction wastewater treatment device that can only realize a single reaction wastewater treatment work, high-efficiency wastewater solid-liquid separation work can be achieved on the same equipment. The overall structure has good stability, compact structure and reasonable distribution, and is easy for staff to install and maintain. It solves the problem that the existing reaction solid-liquid separation tank only has dissolved air entering the tank, and disturbs the airflow of impurities with inconsistent particle sizes in the tank, thereby achieving the effect of stratified solid-liquid separation.

[0072] Embodiment, a method for purifying waste gas from burning electric wires and cables, the method comprising the following steps:

[0073] Step 1: Pass the waste gas into the cyclone tower 120, spray and cool the waste gas in the cyclone tower 120 through the spray box 110 to achieve gas-liquid separation of the waste gas;

[0074] Step 2: First, the waste gas after gas-liquid separation is passed into the washing box 210 for washing, and then the washed waste gas is passed through the treatment box 230 for electrostatic dust removal;

[0075] Step 3: Pass the waste gas after electrostatic dust removal into the adsorption box 300 for activated carbon adsorption.

[0076] The working process of the purification system of the present invention is as follows:

[0077] After the exhaust gas generated by the burning of wires and cables enters the scrubbing module, the mist water and paint mist cyclone rotate at high speed to mix the gas-liquid emulsification reaction, which can make the paint mist and the rotating liquid fully mixed, and achieve gas-liquid separation under the action of centrifugal force. The liquid phase (including dust particles) separated from the gas and liquid sinks to the bottom of the circulating water tank and then enters the wastewater treatment module. After scrubbing and purification, the paint mist purification rate in the exhaust gas can reach more than 95%, thereby improving the efficiency and quality of exhaust gas treatment. At the same time, the generated wastewater flows into the circulating water tank to precipitate it, and the precipitated water is recovered to the auxiliary water tank, so that the generated wastewater can be effectively recycled and reused.

[0078] The gas phase after the separation of the paint liquid enters the purification module, and the feed port on the top of the air intake box is connected to the black smoke exhaust gas discharge port of the washing module, and the black smoke exhaust gas is sent to the washing box in an orderly manner. The spray pipe in the washing box sprays a mist of washing liquid on the black smoke exhaust gas, and the mist of washing liquid and the black smoke exhaust gas undergo an acid-base neutralization reaction, and the washed exhaust gas enters the treatment box through a connecting vertical pipe; the treatment box is energized to form an electrostatic treatment electric field to treat the exhaust gas entering the treatment box, and the treated ultrafine smoke is broken down by high voltage to form positive and negative ions, which are then captured by electrostatic adsorption, thereby achieving the purification of the smoke exhaust gas, and the black smoke purification efficiency is high. An extraction box on one side of the treatment box extracts the exhaust gas after electrostatic treatment in the treatment box.

[0079] After the exhaust gas enters the adsorption box, the adsorption capacity of the surface of the activated carbon adsorbent is used to make the exhaust gas contact with the porous activated carbon adsorbent with a large surface area. The pollutants in the exhaust gas are adsorbed on the surface of the activated carbon, separating them from the gas mixture. The purified gas is extracted by the induced draft fan and discharged into the air.

[0080] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A wire and cable combustion exhaust gas purification system, characterized in that: include: A scrubbing module (100), a purification module (200), an adsorption box (300) and an induced draft fan (400); The scrubbing module (100) comprises a spray box (110), a cyclone tower (120) and a water tank (130); the spray box (110) is installed above the cyclone tower (120); the gas phase outlet at the top of the cyclone tower (120) is communicated with the bottom of the spray box (110), so that the water mist sprayed from the spray box (110) is mixed with the waste gas in the cyclone tower (120); the water tank (130) is installed below the cyclone tower (120); the top of the water tank (130) is communicated with the liquid phase outlet at the bottom of the cyclone tower (120), so that the liquid phase after gas-liquid separation in the cyclone tower (120) flows into the water tank (130); The purification module (200) comprises a washing box (210), a connecting vertical pipe (220) and a processing box (230); the air inlet at the top of the washing box (210) is connected to the exhaust port at the top of the spray box (110) through a connecting pipeline; the processing box (230) is installed directly below the washing box (210); the top of the processing box (230) is connected to the bottom of the washing box (210) through the connecting vertical pipe (220), so that the washed waste gas flows into the processing box (230) for electrostatic dust removal; The air inlet of the adsorption box (300) is connected to the exhaust port at the bottom of the treatment box (230) through a connecting pipeline, and the adsorption box (300) can perform activated carbon adsorption on the waste gas; The induced draft fan (400) is in communication with an exhaust port of the adsorption box (300).

2. A wire and cable combustion exhaust gas purification system according to claim 1, characterized in that: The spray box (110) comprises a hollow ball demisting layer (111) and a spray cooling layer (112); the hollow ball demisting layer (111) is installed above the spray cooling layer (112); the water tank (130) comprises a circulating water tank (131) and an auxiliary water tank (132); the spray pipe in the spray cooling layer (112) is connected to a circulating water pump (134) in the auxiliary water tank (132) via a water supply pipeline (133); the circulating water tank (131) is installed directly below the cyclone tower (120); and the circulating water tank (131) is in communication with the auxiliary water tank (132).

3. A wire and cable combustion exhaust gas purification system according to claim 2, characterized in that: The circulating water tank (131) is connected to the wastewater treatment module (500) through a connecting pipeline. The wastewater treatment module (500) includes a mixing tank (510) and a reaction tank (520) which are arranged in parallel and connected. A stirring mechanism (530) is installed in the mixing tank (510). A solid-liquid separation tank (540) is arranged inside the reaction tank (520). The solid-liquid separation tank (540) is located on a side of the reaction tank (520) away from the mixing tank (510), and a scraping mechanism (550) is installed on the top of the solid-liquid separation tank (540). A gas dissolving mechanism (560) is installed on one side of the reaction tank (520), and a coagulant delivery pipe (570) is connected to the other side of the reaction tank (520).

4. A wire and cable combustion exhaust gas purification system according to claim 1, characterized in that: The washing box (210) is fixedly mounted on the supporting platform (240); an air intake box (250) is mounted on the top of the washing box (210); the air intake box (250) is connected to an air outlet of a spray box (110); a spray pipe (260) is mounted inside the washing box (210); a plurality of spray heads (270) are mounted on the spray pipe (260); and one end of the spray pipe (260) is connected to a water supply box (280) mounted on the supporting platform (240).

5. The wire and cable combustion exhaust gas purification system according to claim 1, characterized in that: The adsorption box (300) comprises a box body (310) and an activated carbon adsorption module (320); a plurality of the activated carbon adsorption modules (320) are installed in the inner cavity of the box body (310) along an axial direction perpendicular to the box body (310); an observation and feeding port (311) corresponding to the activated carbon adsorption module (320) is provided at the top of the box body (310); and a discharge port (312) corresponding to the activated carbon adsorption module (320) is provided at the bottom of the box body (310).

6. A wire and cable combustion exhaust gas purification system according to claim 1, characterized in that: The induced draft fan (400) is installed in a noise reduction and sound insulation box (600).

7. A wire and cable combustion exhaust gas purification system according to claim 6, characterized in that: The noise reduction soundproof box (600) is composed of a plurality of sound insulation unit panels, wherein the sound insulation unit panels include an outer panel (610), a sound insulation layer (620), an inner panel (630) and a keel (640), wherein the keel (640) is fixedly connected between the outer panel (610) and the inner panel (630), and the outer panel (610), the inner panel (630) and the keel (640) form a sound insulation filling cavity, wherein the sound insulation layer (620) is filled in the sound insulation filling cavity, and wherein the sound insulation layer (620) includes a rock wool layer (621), a glass wool layer (622) and an alkali-free glass fiber cloth layer (623) arranged in sequence from the outside to the inside.

8. A method for purifying waste gas from burning electric wires and cables, characterized in that: The purification method comprises the following steps: Step 1: passing the waste gas into a cyclone tower (120), spraying and cooling the waste gas in the cyclone tower (120) through a spray box (110) and achieving gas-liquid separation of the waste gas; Step 2: First, the waste gas after gas-liquid separation is passed into a washing box (210) for washing, and then the washed waste gas is passed through a treatment box (230) for electrostatic dust removal; Step 3: The waste gas after electrostatic dust removal is passed into the adsorption box (300) for activated carbon adsorption.

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