CN111974168A

CN111974168A - Waste flue gas treatment system

Info

Publication number: CN111974168A
Application number: CN202010852290.8A
Authority: CN
Inventors: 李长明; 李慧琳; 母宣贻; 刘勤平
Original assignee: Quanzhou Fuyuan Thermal Insulation Material Co ltd
Current assignee: Quanzhou Fuyuan Thermal Insulation Material Co ltd
Priority date: 2020-08-22
Filing date: 2020-08-22
Publication date: 2020-11-24
Anticipated expiration: 2040-08-22
Also published as: CN111974168B

Abstract

The application relates to the technical field of waste gas treatment, in particular to a waste flue gas treatment system, which comprises drying equipment and waste gas treatment equipment; and conveying the waste gas generated by the drying equipment and the like to waste gas treatment equipment for waste gas purification and treatment through a waste gas conveying pipeline under the action of an induced draft fan. The air inlet compensation mechanism is additionally arranged on the drying equipment, so that other gases such as external air and the like can be effectively supplemented into the drying equipment, the air pressure in the drying equipment is kept relatively stable, and the influence of exhaust gas on the heating temperature of the drying equipment is reduced. But also can recycle the waste water generated by waste gas treatment through waste water treatment equipment, reduce the pollution to the environment and improve the utilization rate of water liquid.

Description

Waste flue gas treatment system

Technical Field

The application relates to the technical field of waste gas treatment, in particular to a waste flue gas treatment system.

Background

Sheet materials are the most commonly used materials in architectural decoration projects. Because of different functions, the material can comprise functional materials such as heat insulation plates, fire prevention plates, sound insulation plates and the like, and the materials are generally composite structures or are prepared by mixing different components. Heating is often required in the production process for drying and forming. During the drying and forming process, the heating of the sheet material may decompose some waste gas, waste smoke and the like harmful to human bodies, wherein the generated waste gas and waste smoke contain much sulfur dioxide.

At present, equipment such as an air suction pump is generally adopted to convey waste gas and waste smoke to treatment equipment such as a desulfurizing tower, and the waste gas and the waste smoke are discharged into the atmosphere after being purified.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when the waste gas and the waste smoke are absorbed and removed from the drying equipment for heating and drying, the air pressure in the drying equipment is reduced, and the control of the drying temperature of the plate in the drying equipment can be influenced.

Disclosure of Invention

In order to reduce drying equipment because of detach waste gas, the influence of exhaust fume back to the inside temperature of equipment, this application provides a waste flue gas processing system.

The application provides a waste flue gas processing system adopts following technical scheme:

a waste flue gas treatment system comprises a drying device and a waste gas treatment device; a waste gas conveying pipeline is arranged between the drying equipment and the waste gas treatment equipment, and an induced draft equipment is arranged on the waste gas conveying pipeline; the drying equipment is provided with an air inlet pipe and an air inlet compensation mechanism; the air outlet of the air inlet pipe is positioned in the drying equipment, and the air inlet of the air inlet pipe is positioned on the outer side of the drying equipment; the air inlet compensation mechanism is arranged on the air inlet pipe.

Through adopting above-mentioned technical scheme, get rid of a large amount to exhaust-gas treatment equipment at the inside waste gas that produces of drying equipment through waste gas pipeline, lead to inside atmospheric pressure of drying equipment to reduce, under the condition that the temperature changes, can effectively supply other gases such as outside air to drying equipment inside through the compensation mechanism that admits air for make the inside atmospheric pressure of drying equipment keep relatively stable, reduce because of the influence that the temperature that exhaust waste gas caused drying equipment heating.

Preferably, the air inlet compensation mechanism comprises an opening adjusting assembly, and the opening adjusting assembly is arranged at the end part, close to the air inlet, of the air inlet pipe.

By adopting the technical scheme, the aperture of the air inlet which is smooth to the outside of the drying equipment can be adjusted according to the requirement by the opening adjusting assembly. When gas needs to be supplemented into the drying equipment, the aperture of the gas inlet is increased through the opening adjusting assembly, and the gas supplementing efficiency is improved; when not needing to make up gas in the drying equipment, reduce the bore of air inlet through opening adjusting part, reduce the high-temperature gas in the drying equipment and spill over through the intake pipe, influence the interior temperature of drying equipment, reduce simultaneously that the waste gas that produces in the drying equipment spills over from the intake pipe, contaminated air.

Preferably, the opening adjusting assembly comprises a shutter and a lifting motor; the lifting motor is arranged on the drying equipment; the flashboard is matched with the radial section of the air inlet pipe and used for blocking an air inlet of the air inlet pipe; the lifting motor is connected with the upper surface of the gate plate and used for controlling the gate to lift and move.

Through adopting above-mentioned technical scheme, adopt the lift motor control flashboard lift removal to the control flashboard blocks the degree of the air inlet of intake pipe, thereby realizes adjusting control to the air inlet bore size of intake pipe.

Preferably, a one-way valve is arranged in the air inlet pipe; the one-way valve is positioned on the inner side of the air inlet compensation mechanism.

Through adopting above-mentioned technical scheme, the check valve is used for preventing that the interior gas of drying equipment from overflowing from the intake pipe, makes things convenient for the outer gas of drying equipment to pass through inside the check valve one-way entering drying equipment.

Preferably, the waste gas treatment equipment comprises a tank body, and a matched tank cover is arranged on the tank body; the tank body is filled with treatment liquid; the tank cover is provided with a liquid level monitoring mechanism, and the lower end of the liquid level monitoring mechanism is contacted with the treatment liquid.

Through adopting above-mentioned technical scheme, adopt the liquid level state of processing liquid in the monitoring cell body of liquid level monitoring mechanism, can make personnel know the liquid level condition in the cell body clearly to handle liquid and add or reduce the adjustment according to the liquid level condition.

Preferably, the waste gas conveying pipeline comprises a waste gas conveying pipeline directly communicated with the drying equipment, and an insulating layer is wrapped outside the waste gas conveying pipeline; the air inlet of the waste gas conveying pipeline is communicated with the interior of the drying equipment; the end part of the waste gas conveying pipeline close to one end of the gas inlet is provided with a flow control valve; the flow control valve is arranged outside the drying equipment.

Through adopting above-mentioned technical scheme, the heat preservation that is equipped with outward of exhaust gas conveying pipeline, the temperature of reducible waste gas gives off the reduction, can be convenient for carry the waste gas that has higher temperature to exhaust-gas treatment equipment for improve the acid-base reaction efficiency among the exhaust-gas treatment process. The flow control valve of the waste gas conveying pipeline can control the opening and closing conditions of the waste gas conveying pipeline, and when waste gas does not need to be conveyed out of the drying equipment, the passage of the waste gas conveying pipeline can be closed through the flow control valve; when the waste gas is required to be removed to the outside of the drying equipment, the passage of the waste gas conveying pipeline is opened through the flow control valve, and the waste gas conveying pipeline and the inside of the drying equipment are kept smooth.

Preferably, the drying equipment is provided with a drying door, and a waste gas suction mechanism is arranged outside the drying door; the waste gas suction mechanism is positioned on the outer side of the drying door.

By adopting the technical scheme, the waste gas in the drying equipment can overflow the drying equipment from the drying door, and the waste gas suction mechanism is arranged outside the drying equipment, so that the overflowing waste gas can be absorbed and discharged, and the pollution to the air outside the drying equipment is reduced.

Preferably, the pulping equipment is also included; the pulping equipment is provided with a waste flue gas removing mechanism; the waste flue gas removing mechanism comprises a suction exhaust fan and a suction exhaust pipeline, the suction exhaust fan is installed on the top wall of the pulping equipment, one end of the suction exhaust pipeline is communicated with the suction exhaust fan, and the other end of the suction exhaust pipeline is communicated with the waste gas treatment equipment.

By adopting the technical scheme, the pulping equipment can absorb and discharge waste smoke and waste gas generated in the stirring and pulping process of the pulping equipment to the waste gas treatment equipment through the waste smoke and gas discharge mechanism, so that emission of the waste smoke and the waste gas generated in the pulping process can be reduced, and the pollution area of the waste smoke and the waste gas is reduced.

Preferably, the system also comprises a wastewater treatment device positioned between the waste gas treatment device and the pulping device; a first liquid conveying pipeline is communicated between the wastewater treatment equipment and the waste gas treatment equipment; and a second infusion pipeline is communicated between the wastewater treatment equipment and the pulping equipment.

By adopting the technical scheme, after the waste gas treatment equipment treats waste gas generated by drying equipment and the like by adopting alkali liquor, residual liquid needs to be discharged out of the waste gas treatment equipment, and the residual liquid is generally alkaline, so that the addition of waste water treatment equipment for treating the alkaline residual liquid is necessary. The waste water treatment equipment absorbs waste water generated by the waste gas treatment equipment through the first liquid conveying pipeline, can treat the waste water to form water meeting the emission standard to be discharged, or can be prepared into recyclable liquid, and the recyclable liquid is conveyed to the pulping equipment through the second liquid conveying pipeline to be recycled.

Preferably, the wastewater treatment equipment comprises a blending cylinder body, and the blending cylinder body is provided with a temperature adjusting mechanism.

Through adopting above-mentioned technical scheme, because in the exhaust-gas treatment process, acid gas and alkaline liquid take place to react and can generate heat, and the waste gas that is carried to exhaust-gas treatment equipment by drying equipment has higher temperature moreover, therefore the waste water after exhaust-gas treatment also often has higher temperature, in order to be convenient for the recycle to these residual liquid, need cool down these liquid. The recovered residual liquid is treated in the blending cylinder, and the temperature regulation mechanism is used for realizing the temperature reduction treatment of the liquid.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the air inlet compensation mechanism can effectively supplement other gases such as outside air and the like into the drying equipment, so that the air pressure in the drying equipment is kept relatively stable, and the influence of the exhaust gas on the heating temperature of the drying equipment is reduced;

2. the aperture of the air inlet pipe which is smooth with the outside of the drying equipment can be adjusted according to the requirement by the opening adjusting assembly;

3. the liquid level monitoring mechanism is adopted to monitor the liquid level state of the treatment liquid in the tank body of the waste gas treatment equipment, so that personnel can clearly know the liquid level condition in the tank body, and the addition or reduction adjustment of the treatment liquid can be conveniently carried out according to the liquid level condition.

Drawings

FIG. 1 is a schematic view of the overall structure of the present application;

FIG. 2 is a schematic structural view of a drying apparatus in an embodiment of the present application;

FIG. 3 is a schematic sectional view taken along line A-A in FIG. 2, which mainly shows the structure of the exhaust gas conveying pipe;

FIG. 4 is an enlarged view at B of FIG. 2, mainly showing the structure of the flow control valve;

FIG. 5 is an enlarged view of the intake air compensating mechanism at C of FIG. 2;

FIG. 6 is a schematic sectional view taken along line D-D in FIG. 5, which mainly shows the structure of the check valve;

FIG. 7 is a schematic structural view of an exhaust gas treatment apparatus in an embodiment of the present application;

FIG. 8 is a schematic sectional view along the direction E-E in FIG. 7, which mainly shows the internal structure of the tank body;

FIG. 9 is an enlarged view of portion F of FIG. 8, which mainly shows the structure of the liquid level monitoring mechanism;

FIG. 10 is an exploded view of the configuration of the fluid level monitoring mechanism of the embodiment of the present application;

FIG. 11 is a schematic view showing the construction of a wastewater treatment apparatus according to an embodiment of the present application;

FIG. 12 is a schematic sectional view along the direction G-G in FIG. 11, which mainly shows the internal structure of the blending cylinder;

FIG. 13 is a schematic view of the construction of a pulping apparatus in an embodiment of the application;

FIG. 14 is a schematic sectional view in the direction H-H in FIG. 13, which mainly shows the internal structure of a pulping apparatus;

FIG. 15 is an enlarged view of section I of FIG. 13, which mainly shows the structure of the feed inlet and the baffle.

Description of reference numerals: 1. a drying device; 11. an air inlet pipe; 12. an intake air compensation mechanism; 121. a shutter plate; 122. a lifting motor; 123. a motor base; 124. a guide rail; 125. rope winding; 126. winding the rotating wheel; 13. a one-way valve; 14. an inlet and an outlet; 15. an exhaust gas suction mechanism; 151. an extraction tube; 152. a suction hood; 16. a door panel; 17. a drying door; 2. an exhaust gas treatment device; 21. a tank body; 211. a treatment liquid; 212. purifying the gas pipe; 22. a liquid preparation device; 221. a liquid preparation delivery pipeline; 23. a pool cover; 231. monitoring the through opening; 24. a liquid level monitoring mechanism; 241. a liquid level mounting base; 2411. the through hole is arranged in a penetrating way; 2412. a liquid level stop block; 242. a floating block; 243. a graduated rod; 2431. a slider; 244. a cover cylinder; 2441. a barrel cavity; 2442. a visual window; 2443. a guide groove; 3. an exhaust gas delivery conduit; 31. an air inducing device; 32. branch exhaust pipes; 33. a heat-insulating layer; 34. an aluminum foil glass fiber cloth layer; 35. a flow control valve; 351. regulating and controlling a handle; 352. a first stopper; 353. a second limiting block; 354. a bump; 4. a wastewater treatment facility; 41. blending the cylinder body; 42. a temperature adjustment mechanism; 421. a temperature control assembly; 422. a ring pipe; 43. an external water inlet pipe; 44. a mixing mechanism; 441. a stirring shaft; 442. rotating the paddle; 443. a blade; 5. pulping equipment; 51. a stirring tank; 511. a walkway; 52. a protective cover; 521. a feed inlet; 522. a baffle plate; 523. sealing the cushion layer; 53. a stirring mechanism; 54. a waste flue gas removal mechanism; 541. a suction and exhaust fan; 542. a suction and discharge pipeline; 61. a first infusion line; 62. a second infusion line; 621. an on-off valve; 63. and (5) feeding a liquid pump.

Detailed Description

The present application is described in further detail below with reference to figures 1-15.

Adding water into mixed powder formed by taking silicate as a raw material and taking a functional assistant containing a composite sodium sulfonate foaming agent as an auxiliary material, stirring and pulping in pulping equipment, injecting the pulp prepared into a model through a pulp feeding device to prepare a mold blank, and then feeding the mold blank into drying equipment to carry out high-temperature drying to prepare a finished product.

Wherein, the powder material is easy to be raised when the material is fed into the pulping equipment, and the foaming agent and the like are mixed and stirred with water to generate the waste gas containing sulfur dioxide.

Meanwhile, when the mold blank is dried at high temperature in drying equipment, the foaming agent is heated at high temperature and reacts with water to generate a large amount of waste gas containing sulfur dioxide. In order to reduce the pollution of the exhaust gas generated in the production process directly discharged to the atmosphere, the exhaust gas treatment equipment is used for treating and purifying the exhaust gas so as to ensure that the exhaust gas meets the emission requirement and is discharged into the atmosphere.

In the related art, a wet desulfurization method is generally adopted for treating the waste gas, i.e., the waste gas is introduced into an alkaline treatment solution to perform an acid-base reaction. The residual liquid generated after wet desulphurization has certain alkalinity, is alkaline wastewater and cannot be directly discharged. Therefore, it is necessary to treat the alkaline waste water and then discharge or recycle the alkaline waste water.

The embodiment of the application discloses a waste flue gas treatment system, which comprises a drying device 1 and a waste gas treatment device 2; a waste gas conveying pipeline 3 is arranged between the drying equipment 1 and the waste gas treatment equipment 2, and an induced draft device 31 is arranged on the waste gas conveying pipeline 3; the drying equipment 1 is provided with an air inlet pipe 11 and an air inlet compensation mechanism 12; an air outlet of the air inlet pipe 11 is positioned inside the drying equipment 1, and an air inlet of the air inlet pipe 11 is positioned outside the drying equipment 1; the intake air compensation mechanism 12 is attached to the intake pipe 11.

The waste gas that produces in drying equipment 1 is got rid of to waste gas treatment device 2 in a large number through waste gas pipeline 3, leads to the inside atmospheric pressure of drying equipment 1 to reduce, under the condition that the temperature changes, can effectively supply other gases such as outside air to drying equipment 1 inside through compensation mechanism 12 that admits air for make the inside atmospheric pressure of drying equipment 1 keep relatively stable, reduce because of the influence that the temperature that exhaust gas caused drying equipment 1 heating.

Referring to fig. 1, a waste flue gas treatment system includes a drying apparatus 1, a waste gas treatment apparatus 2, a waste water treatment apparatus 4, and a pulping apparatus 5.

Referring to fig. 2, the drying apparatus 1 is provided with an exhaust gas conveying pipe 3 and a branch exhaust pipe 32 communicating with the exhaust gas conveying pipe 3, and the other end of the branch exhaust pipe 32 communicates with the inside of the drying apparatus 1.

Referring to fig. 1, in the drying device 1, during the operation of drying and forming the silicate heat insulating material, the temperature of the side entering the drying device 1 is higher than the temperature of the side exiting from the drying device 1, and the temperature of the side entering the drying device 1 can reach 170 ℃. At this high temperature, the raw and auxiliary materials of the silicate insulation material will be heated to produce a waste gas containing sulfur dioxide, the amount of which is also higher than the temperature of the other side of the drying device 1. Therefore, the number of branch exhaust pipes 32 communicating with the drying apparatus 1 on the side closer to the feeding side is larger than that on the other side, so that the exhaust efficiency of the exhaust gas inside the drying apparatus 1 can be improved.

Referring to fig. 2 and 3, the outer walls of the exhaust gas conveying pipeline 3 and the branch exhaust pipe 32 are respectively provided with an insulating layer 33 and an aluminum foil glass fiber cloth layer 34 from inside to outside. The insulating layer 33 is used to reduce high-temperature emissions in the exhaust gas conveying pipe 3 or the branch exhaust pipe 32. The aluminum foil glass fiber cloth layer 34 has high temperature resistance and heat insulation performance, and can prevent and reduce the damage of personnel caused by mistakenly touching the waste gas conveying pipeline 3 or the branch exhaust pipe 32.

Referring to fig. 4, a flow control valve 35 is provided in the branch exhaust pipe 32, and the flow control valve 35 is located outside the drying apparatus 1.

The flow control valve 35 is provided with an adjusting handle 351 extending outwards; the opening and closing state of the flow control valve 35 is controlled by the control knob 351. The opening/closing state of the flow control valve 35 can be directly adjusted by the adjustment knob 351 provided outside the exhaust gas delivery pipe 3.

Referring to fig. 4, a first limiting block 352 and a second limiting block 353 are disposed on one side of the flow control valve 35 close to the adjusting handle 351; a projection 354 is arranged at one end of the adjusting handle 351 close to the flow control valve 35 in a radial outward mode, and the projection 354 is located between the first limiting block 352 and the second limiting block 353; when the control handle 351 is rotated until the projection 354 abuts against the first limit block 352, the flow control valve 35 is in a fully opened state; when the control knob 351 is rotated until the protrusion 354 abuts against the second stopper 353, the flow control valve 35 is in a fully closed state. The projection 354, the first stopper 352 and the second stopper 353 constitute a stopper structure between the control handle 351 and the flow control valve 35, which can help a person to control the opening and closing state of the flow control valve 35.

Referring to fig. 2 and 5, the drying apparatus 1 is provided with an intake pipe 11 and an intake air compensating mechanism 12. An air outlet of the air inlet pipe 11 is positioned inside the drying equipment 1, and an air inlet of the air inlet pipe 11 is positioned outside the drying equipment 1; the intake air compensation mechanism 12 is attached to the intake pipe 11.

Referring to fig. 5, the intake air compensating mechanism 12 includes an opening adjusting assembly provided at an end portion of the intake pipe 11 near the intake port. The opening adjustment assembly includes a shutter 121, a lift motor 122, a motor mount 123, and a guide rail 124. The motor base 123 is installed on the drying apparatus 1, and the lifting motor 122 is installed on the motor base 123. The output shaft of the elevator motor 122 is fitted with a winding wheel 126. The number of the guide rails 124 is two, the two guide rails 124 are symmetrically installed on two sides of the outer side of the air inlet pipe 11, the gate plate 121 is matched with the air inlet of the air inlet pipe 11, and the gate plate 121 abuts against the end face of the air inlet pipe 11. The shutter 121 is fittingly mounted between the rails 124. The shutter 121 is located below the spool 126 and the upper side of the shutter 121 is connected to the spool 126 by a rope 125. When the lifting motor 122 rotates around the rotating wheel 126, the rope 125 drives the shutter 121 to lift up and down along the guide rail 124, thereby adjusting the aperture of the air inlet communicated with the outside.

Referring to fig. 6, a check valve 13 is further provided in the intake pipe 11. The check valve 13 is located inside the intake air compensating mechanism 12. The check valve 13 is used for preventing the gas in the drying device 1 from overflowing from the gas inlet pipe 11, so that the gas outside the drying device 1 can conveniently enter the inside of the drying device 1 through the check valve 13 in a one-way mode.

Referring to fig. 6, in use, the air inlet pipe 11 may be selectively installed with only the opening adjusting assembly or the check valve 13 according to actual conditions. If only the check valve 13 is provided, the check valve 13 corresponds to the intake air compensation mechanism 12, and restricts the gas flow direction of the intake pipe 11, only the gas outside the drying apparatus 1 can enter the intake pipe 11 and then enter the inside of the drying apparatus 1 from the check valve 13, and the gas inside the drying apparatus 1 cannot escape through the check valve 13.

Referring to fig. 2, according to the use requirement, an air inlet pipe 11 can be communicated with the waste gas conveying pipeline 3, so that the opening arrangement of the drying equipment 1 is reduced.

Referring to fig. 6, according to the check valve 13 and the air intake compensation mechanism 12 provided in the air intake pipe 11, through long-term production adjustment, the position of the shutter 121 in the air intake compensation mechanism 12 can be adjusted to a relatively fixed position, which does not affect the external air entering the drying apparatus 1 through the air intake pipe 11, the exhaust passage, the branch exhaust pipe 32, and the like, and can also avoid the exhaust gas in the pipeline from overflowing from the air intake pipe 11.

Referring to fig. 2, the drying apparatus 1 is provided with a drying door 17, and an exhaust gas suction mechanism 15 is provided outside the drying door 17; the exhaust gas suction means 15 is located on the outside of the drying door 17. The exhaust air in the drying apparatus 1 may overflow the drying apparatus 1 from the drying door 17, and the exhaust air suction mechanism 15 is provided outside the drying apparatus 1, so that the overflowed exhaust air can be absorbed and removed, and the pollution to the air outside the drying apparatus 1 is reduced.

The drying door 17 is provided with a matching door panel 16. As soon as the door panel 16 is opened, the exhaust air suction means 15 is activated, sucking up exhaust air which overflows from the drying door 17 inside the drying apparatus 1. The circuit monitoring control can be adopted to realize that the waste gas suction mechanism 15 is started immediately when the door panel 16 is opened, but the waste gas suction mechanism 15 is closed in a delayed manner after the door panel 16 is closed; this makes it possible to largely absorb and remove the exhaust air escaping from the drying door 17 by the exhaust air suction means 15.

Referring to fig. 2, the exhaust gas suction mechanism 15 includes a suction pipe 151 and a suction hood 152; the suction pipe 151 is communicated with the exhaust gas conveying pipeline 3; the suction hood 152 is a hood body with a downward opening, the suction hood 152 is positioned on the drying door, and the suction hood 152 is matched with the drying door 17. The suction hood 152 provided on the upper surface outside the drying door 17 can improve the efficiency of suction and removal of the overflow from the drying apparatus 1.

Referring to fig. 1, the suction pipe 151 and the exhaust gas delivery pipe 3 are both communicated with the exhaust gas treatment device 2.

Referring to fig. 1, the other end of the exhaust gas conveying pipeline 3 is communicated with the exhaust gas treatment device 2, and an air inducing device 31 is arranged on the exhaust gas conveying pipeline 3. The induced draft equipment 31 is used for providing a power source for the exhaust gas conveying pipeline 3 to remove the exhaust gas in the drying equipment 1, and simultaneously, the exhaust gas is conveniently conveyed into the exhaust gas treatment equipment 2 from the air conveying pipeline for purification and treatment of the exhaust gas, and the exhaust gas is discharged after reaching the emission standard.

Referring to fig. 7 and 8, the exhaust gas treatment apparatus 2 includes a tank body 21 and a liquid distribution device 22.

A matched tank cover 23 is arranged on the tank body 21; the tank body 21 is filled with a treatment liquid 211; the tank cover 23 is provided with a liquid level monitoring mechanism 24, and the lower end of the liquid level monitoring mechanism 24 is in contact with the treatment liquid 211. The liquid level monitoring mechanism 24 is adopted to monitor the liquid level state of the treatment liquid 211 in the tank body 21, so that personnel can clearly know the liquid level condition in the tank body 21, and the addition or reduction adjustment of the treatment liquid 211 can be conveniently carried out according to the liquid level condition.

The liquid preparation device 22 delivers the prepared treatment liquid 211 to the tank body 21 through a liquid preparation delivery pipe 221.

The tank body 21 is provided with a purified gas pipe 212 for discharging the purified gas, and the purified gas treated by the purified waste gas treatment device 2 is discharged to the atmosphere through the purified gas pipe 212. According to the requirement, a gas detection module can be arranged at the gas inlet pipe of the gas purification pipe 212 for detecting whether the treated gas meets the emission standard.

Referring to fig. 9, the liquid level monitoring mechanism 24 includes a liquid level mount 241, a float block 242, a scale bar 243, and a cover cylinder 244.

Referring to fig. 10, the tank cover 23 is provided with a monitoring port 231 that mates with the liquid level monitoring mechanism 24. The fluid level mount 241 fits within the monitoring port 231. The middle of the liquid level mounting base 241 is provided with a through hole 2411 matched with the scale rod 243, the axial direction of the through hole 2411 is consistent with the axial direction of the monitoring through hole 231, and meanwhile, the through hole is in a vertical state, so that the moving direction of the scale rod 243 can be kept vertical, and the liquid level difference display result of the scale rod 243 is improved.

The floating block 242 floats on the treatment liquid 211; the lower end of the graduated rod 243 penetrates through the monitoring through hole 231 and is fixedly connected with the floating block 242, and the upper end of the graduated rod 243 is normally exposed on the tank cover 23.

The cover cylinder 244 is fixedly arranged on the through hole 2411; the cover cylinder 244 is provided with an opening matched with the cylinder cavity 2441 through the through hole 2411; the axial height of the cylinder cavity 2441 is not less than the axial height of the scale bar 243; the side wall of the cover cylinder 244 is provided with a visual window 2442 communicated with the cylinder cavity 2441, and the visual window 2442 corresponds to the scale rod 243; the viewing window 2442 is provided with a transparent window shutter 522.

Because the tank body 21 is used for treating waste gas, the waste gas which is not treated in the tank body 21 inevitably floats to the top of the tank body 21, and even passes through the gap between the through hole 2411 and the scale rod 243 to overflow the tank body 21. This application can improve the leakproofness of wearing to establish port 2411 through cover section of thick bamboo 244, establishes the complete cover of scale rod 243, can reduce the condition emergence that waste gas spilled over from wearing to establish port 2411 like this. Meanwhile, a visual window 2442 with a transparent window baffle 522 is arranged on the cover cylinder 244, and personnel can still well know the scale value of the scale rod 243 through the visual window 2442, so that the liquid level condition in the tank body 21 is judged.

And the movement direction of the scale rod 243 can be further limited by additionally arranging the cover cylinder 244, so that the liquid level monitoring precision is improved.

Referring to fig. 9, the cylindrical cavity 2441 is provided with guide grooves 2443 along the axial direction of the cover cylinder 244, and the guide grooves 2443 are formed at least twice on a straight line on the same diameter of the cylindrical cavity 2441. The middle part of the scale rod 243 is provided with a slide block 2431 radially outwards, and the slide block 2431 is matched with the guide groove 2443. The slider 2431 and the guide groove 2443 keep the scale bar 243 moving in the direction of the guide groove 2443, and the axial displacement of the scale bar 243 is reduced, thereby improving the monitoring accuracy of the liquid level monitoring mechanism 24.

Referring to fig. 9 and 10, the lower end surface of the guide groove 2443 is a through opening; a liquid level limiting block 2412 matched with the guide groove 2443 is arranged on the upper end surface of the through opening 2411. The guide groove 2443 of the cover cylinder 244 is positioned and sleeved on the liquid level limiting block 2412, so that the installation efficiency of the cover cylinder 244 and the scale rod 243 can be improved.

Referring to fig. 1, a wastewater treatment apparatus 4 is located between the exhaust gas treatment apparatus 2 and the pulp making apparatus 5. A first liquid conveying pipeline 61 is communicated between the waste water treatment equipment 4 and the waste gas treatment equipment 2; a second liquid conveying pipeline 62 is communicated between the wastewater treatment device 4 and the pulping device 5.

Referring to fig. 11, the wastewater treatment apparatus 4 includes a conditioning cylinder 41, and the conditioning cylinder 41 is provided with a temperature adjusting mechanism 42. The upper part of the mixing cylinder 41 is also communicated with an outer water inlet pipe 43, and the water inlet of the outer water inlet pipe 43 and the liquid outlet of the first liquid conveying pipeline 61 are both positioned in the mixing cylinder 41. The liquid inlet of the second liquid conveying pipeline 62 is positioned at the lower part of the cylinder body. The first and second

liquid feed pipes

61 and 62 are provided with liquid feed pumps 63. The liquid feeding pump 63 is used for improving the conveying drive of the alkaline wastewater and the alkaline water after recovery treatment, and improving the conveying efficiency.

Referring to fig. 12, a mixing mechanism 44 is provided in the blending cylinder 41, and the mixing mechanism 44 includes a stirring shaft 441; the stirring shaft 441 is sleeved on the top wall of the blending cylinder 41; the axial length of the stirring shaft 441 is not less than half the height of the interior of the blending cylinder 41. The upper part of the stirring shaft 441 is provided with a rotating paddle 442; a plurality of blades 443 are uniformly arranged on the side wall of the stirring shaft 441, and the blades 443 are positioned below the rotating blades 442; each of the vanes 443 has an area smaller than that of the rotary blade 442.

Referring to fig. 12, the water outlet of the outer water inlet tube 43 and the liquid outlet of the first liquid conveying pipe 61 are both located above the rotating paddle 442, and the water outlet of the outer water inlet tube 43 and the liquid outlet of the first liquid conveying pipe 61 are respectively facing the rotating direction of the rotating paddle 442.

The liquid outlet of the first liquid conveying pipeline 61 and the water outlet of the outer water inlet pipe 43 are aligned to the rotating direction of the rotating paddle, so that the impact force formed by the water outlet of the outer water inlet pipe 43 and the impact force formed by the liquid outlet of the first liquid conveying pipeline 61 are combined to form the rotating driving force of the mixing mechanism 44, the rotating driving force is used for providing stirring power for the liquid in the blending cylinder 41, and the mixing efficiency is improved; and no additional power source is needed.

Referring to fig. 11, the temperature regulating mechanism includes a temperature controlling assembly 421 and a loop 422; the ring pipe 422 is sleeved on the side wall of the blending cylinder 41; the temperature control component 421 is arranged between the inlet of the loop pipe 422 and the outlet of the loop pipe 422; temperature adjusting media are filled in the ring pipe 422 and the temperature control component 421; the temperature control medium can be a fluid such as water, gas or oil.

Referring to fig. 11, the inlet of the loop pipe 422 is located below the blending cylinder 41, and the outlet of the loop pipe 422 is located above the blending cylinder 41; the temperature at the inlet of loop 422 is less than the temperature at the outlet of loop 422; the temperature regulating medium enters the inlet of loop 422 from temperature control assembly 421 and enters temperature control assembly 421 from the outlet of loop 422.

Since the alkaline wastewater and water delivered into the mixing cylinder 41 through the first fluid delivery pipe 61 are both sprayed downward from the upper portion of the mixing cylinder 41 through the outer water inlet pipe 43, the temperature of the upper portion of the mixing cylinder 41 is relatively higher than that of the lower portion of the mixing cylinder 41. The temperature-adjusting medium with a lower temperature adjusted by the temperature-adjusting component 421 enters the loop pipe 422 through the inlet of the loop pipe 422, then surrounds the blending cylinder 41 from bottom to top, and transmits the lower temperature to the mixed liquid in the blending cylinder 41 through the side wall of the blending cylinder 41 to reduce the temperature of the mixed liquid; then enters the temperature control component 421 from the outlet of the ring pipe 422; the whole temperature control process is carried out circularly.

Referring to fig. 1, the alkaline water blended and mixed by the blending cylinder 41 is transported to the pulping apparatus 5 through the second liquid conveying pipe 62 to be used as one of the mixing ingredients of the pulping apparatus 5.

Referring to fig. 13, the pulping apparatus 5 includes a stirring tank 51 and a shield 52 installed above the stirring tank 51.

Referring to fig. 14, at least 2 sets of stirring mechanisms 53 are provided in the stirring tank 51. Each stirring tank 51 is provided with at least 2 groups of stirring mechanisms 53, which can improve the uniformity of the slurry produced by the pulping in the stirring tank 51.

The water outlet of the second infusion pipe 62 penetrates through the side wall of the protective cover 52 and is positioned above the stirring pool 51. The end parts of the second infusion pipelines 62 close to the water outlet are provided with switch valves 621. The second liquid conveying pipe 62 is located above the stirring tank 51, and can make part of the raw and auxiliary material dust dispersed by stirring sink into the stirring tank 51. Of course, the stirring tank 51 may be additionally provided with other water injection pipes, slurry discharge pipes and the like according to requirements.

The protective cover 52 is provided with a waste smoke removing mechanism 54; the exhaust fume removing mechanism 54 includes a suction and exhaust fan 541 and a suction and exhaust pipe 542, the suction and exhaust fan 541 is installed on the top wall of the protection cover 52, the suction and exhaust pipe 542 is installed on the protection cover 52, one end of the suction and exhaust pipe 542 is communicated with the suction and exhaust fan 541, and the other end is communicated with the exhaust gas treatment device 2. The exhaust fan 541 sucks the exhaust fume from the protective cover 52 and the agitation tank 51, and discharges the exhaust fume from the exhaust duct 542.

Referring to fig. 13, a feed inlet 521 is formed at one side of the shield 52, and the feed inlet 521 is provided with a baffle 522 matched with the feed inlet 521. Referring to fig. 13, a walkway 511 is provided at an upper portion of the stirring tank 51 near the feed opening 521, and a person can add raw and auxiliary materials into the stirring tank 51 through the feed opening 521 from the walkway 511.

Referring to fig. 15, a gasket 523 is disposed between the baffle 522 and the feed inlet 521. The raw and auxiliary materials for pulping are added into the stirring tank 51 through the feed inlet 521. The baffle 522 is used for shielding the feed inlet 521 and reducing the overflow of waste smoke and waste gas from the feed inlet 521.

The implementation principle of a waste flue gas treatment system in the embodiment of the application is as follows:

referring to fig. 1, the waste gas generated inside the drying apparatus 1, the waste gas overflowed from the drying door by the waste gas suction mechanism 15, and the waste smoke and waste gas generated by the pulping apparatus 5 by the waste gas exhaust mechanism 54 are all conveyed into the tank body 21 of the waste water treatment apparatus 4 by the waste gas conveying pipeline 3, the induced draft apparatus 31, and the like, and the gas which meets the emission requirement is discharged after the waste gas is treated and purified in the waste gas treatment apparatus 2.

The air inlet compensation mechanism 12 arranged on the drying device 1 can supplement air into the drying device 1 according to the requirements of the drying forming process, and the situation that the air pressure in the drying device 1 is reduced due to exhaust emission is reduced.

Referring to fig. 1, after the flue gas treatment device 2 performs desulfurization treatment on the flue gas, the residual alkaline wastewater is conveyed to the wastewater treatment device 4 via a first liquid conveying pipe 61; after the peripheral cooling, the water adding cooling, the PH value reduction and the like are carried out in the wastewater treatment equipment 4, alkaline water meeting the recycling requirement is formed; then is conveyed to a recycling device, namely pulping device 5 through a second liquid conveying pipeline 62, and is mixed with raw materials and auxiliary materials for pulping.

In the wastewater treatment equipment 4, the temperature control component 421 and the ring pipe 422 surrounding the blending cylinder 41 are used to act together to reduce the alkaline concentration of the mixed liquid in the blending cylinder 41 and the temperature of the mixed liquid in the blending cylinder 41, so as to form the low-alkaline water after temperature reduction. And the low-alkaline water treated by the blending cylinder 41 is conveyed to the pulping equipment 5 through a second liquid conveying pipeline 62 for recycling. And because the low-alkalinity water contains low-concentration alkalinity, the reaction with foaming agents and the like in raw and auxiliary materials can be accelerated in the stirring pulping process, high-density gaps can be formed among silicate materials, and the silicate heat-insulating material prepared from the raw and auxiliary materials has better heat-insulating property.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A waste flue gas treatment system comprises a drying device (1) and a waste gas treatment device (2); the method is characterized in that: a waste gas conveying pipeline (3) is arranged between the drying equipment (1) and the waste gas treatment equipment (2), and an air inducing device (31) is arranged on the waste gas conveying pipeline (3); the drying equipment (1) is provided with an air inlet pipe (11) and an air inlet compensation mechanism (12); the air outlet of the air inlet pipe (11) is positioned inside the drying equipment (1), and the air inlet of the air inlet pipe (11) is positioned outside the drying equipment (1); the air inlet compensation mechanism (12) is installed on the air inlet pipe (11).

2. The waste flue gas treatment system of claim 1, wherein: the air inlet compensation mechanism (12) comprises an opening adjusting assembly, and the opening adjusting assembly is arranged at the end part of the air inlet pipe (11) located at one end of the drying equipment (1).

3. The waste flue gas treatment system of claim 2, wherein: the opening adjusting assembly comprises a shutter plate (121) and a lifting motor (122); the lifting motor (122) is arranged on the drying equipment (1); the flashboard (121) is matched with the radial section of the air inlet pipe (11) and is used for blocking an air inlet of the air inlet pipe (11); the lifting motor (122) is connected with the upper surface of the gate plate (121) and is used for controlling the gate to move up and down.

4. The waste flue gas treatment system of claim 1, wherein: a one-way valve (13) is arranged in the air inlet pipe (11); the one-way valve (13) is positioned on the inner side of the air intake compensation mechanism (12).

5. The waste flue gas treatment system of claim 1, wherein: the waste gas treatment equipment (2) comprises a tank body (21), wherein a matched tank cover (23) is arranged on the tank body (21); the tank body (21) is filled with a treatment liquid (211); the tank cover (23) is provided with a liquid level monitoring mechanism (24), and the lower end of the liquid level monitoring mechanism (24) is in contact with the treatment liquid (211).

6. The waste flue gas treatment system of claim 1, wherein: the waste gas conveying pipeline (3) comprises a waste gas conveying pipeline (3) directly communicated with the drying equipment (1), and a heat-insulating layer (33) is wrapped outside the waste gas conveying pipeline (3); the air inlet of the waste gas conveying pipeline (3) is communicated with the interior of the drying equipment (1); a flow control valve (35) is arranged at the end part of the waste gas conveying pipeline (3) close to one end of the gas inlet; the flow control valve (35) is arranged outside the drying equipment (1).

7. The waste flue gas treatment system of claim 1, wherein: the drying equipment (1) is provided with a drying door, and a waste gas suction mechanism (15) is arranged outside the drying door; the waste gas suction mechanism (15) is positioned on the outer side of the drying door.

8. The waste flue gas treatment system of claim 1, wherein: also comprises a pulping device (5); the pulping equipment (5) is provided with a waste flue gas removing mechanism (54); the waste flue gas removing mechanism (54) comprises a suction and exhaust fan (55) and a suction and exhaust pipeline (56), the suction and exhaust fan (55) is installed on the top wall of the pulping equipment (5), one end of the suction and exhaust pipeline (56) is communicated with the suction and exhaust fan (55), and the other end of the suction and exhaust pipeline is communicated with the waste gas treatment equipment (2).

9. The waste flue gas treatment system of claim 8, wherein: the system also comprises a wastewater treatment device (4) positioned between the waste gas treatment device (2) and the pulping device (5); a first liquid conveying pipeline (61) is communicated between the wastewater treatment equipment (4) and the waste gas treatment equipment (2); a second infusion pipeline (62) is communicated between the wastewater treatment equipment (4) and the pulping equipment (5).

10. The waste flue gas treatment system of claim 9, wherein: the wastewater treatment equipment (4) comprises a blending cylinder body (41), wherein the blending cylinder body (41) is provided with a temperature adjusting mechanism (42).