MVR tail gas treatment system device

Abstract

The utility model relates to the technical field of tail gas treatment, and discloses an MVR (mechanical vapor recompression) tail gas treatment system device which comprises a cooling box, a nitride absorption box, a sulfide absorption box, a heat exchange pipe, a booster pump, a flow dividing mechanism, a flow guide pipe, a mixing mechanism and a gas outlet pipe, the heat exchange pipe is mounted in the cooling box, and the booster pump connected with the heat exchange pipe is arranged on the right side of the cooling box; a nitride absorption box is arranged on the right side of the booster pump, a flow dividing mechanism extending into the nitride absorption box is connected to the booster pump, a sulfide absorption box is arranged on the right side of the nitride absorption box, a flow guide pipe extending to the bottom end in the sulfide absorption box is installed on the nitride absorption box, and a plurality of second air outlet holes are formed in the lower end of the flow guide pipe. A mixing mechanism extending into the sulfide absorption box is mounted at the top of the sulfide absorption box. According to the device, nitrides and sulfides in tail gas are fully absorbed, and pollution to air is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a system device for MVR tail gas treatment. Background Art

[0002] MVR is the abbreviation of steam mechanical recompression technology. MVR evaporator is an energy-saving technology that reuses the energy of the secondary steam it produces, thereby reducing the demand for external energy. The exhaust gas discharged by the MVR system has a high temperature and is mixed with some nitrides and sulfides. After being discharged into the air, it will cause certain pollution to the air. Therefore, in view of the above situation, it is urgent to develop a MVR exhaust gas treatment system device that can fully absorb the nitrides and sulfides in the exhaust gas and reduce the pollution to the air, so as to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0003] The utility model aims to provide a system device for MVR tail gas treatment, which can fully absorb the nitrogen compounds and sulfides in the tail gas and reduce the pollution to the air.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A system device for MVR tail gas treatment, comprising a cooling box, a nitride absorption box, a sulfide absorption box, a heat exchange pipe, a booster pump, a flow diversion mechanism, a flow guide pipe, a mixing mechanism and an air outlet pipe, wherein the heat exchange pipe is installed in the cooling box, a booster pump connected to the heat exchange pipe is arranged on the right side of the cooling box, a nitride absorption box is arranged on the right side of the booster pump, a flow diversion mechanism extending to the inside of the nitride absorption box is connected to the booster pump, a sulfide absorption box is arranged on the right side of the nitride absorption box, a flow guide pipe extending to the bottom end of the inside of the sulfide absorption box is installed on the nitride absorption box, a plurality of second air outlet holes are arranged at the lower end of the flow guide pipe, and the sulfide absorption box A mixing mechanism extending to the interior is installed on the top of the sulfide absorption box, the diverter mechanism includes: a diverter pipe, an annular pipe and a first air outlet, the diverter pipe is connected to the booster pump, a plurality of annular pipes are arranged in the nitride absorption box, the diverter pipe is connected to the plurality of annular pipes, each of the annular pipes is provided with a plurality of first air outlets, the mixing mechanism includes: a driving motor, a first gear, a second gear and a stirring shaft, the driving motor is fixed to the sulfide absorption box, a first gear is installed on the output shaft of the driving motor, a second gear meshing with the first gear is installed on one side of the first gear, the second gear is installed on the stirring shaft, and the stirring shaft is rotatably connected to the sulfide absorption box.

[0006] Preferably, the heat exchange tube is made of copper.

[0007] Preferably, a water inlet pipe is arranged on the top of the cooling box, the water inlet pipe is connected to external tap water, and a water outlet pipe is arranged at the lower left of the cooling box.

[0008] Preferably: a first feed pipe is arranged on the top of the nitride absorption box, a first plug is detachably mounted on the first feed pipe, a first discharge pipe is arranged at the lower right of the nitride absorption box, a first end cover is detachably mounted on the first discharge pipe, a second feed pipe is arranged on the top of the sulfide absorption box, a second plug is detachably mounted on the second feed pipe, a second discharge pipe is arranged at the lower right of the sulfide absorption box, a second end cover is detachably mounted on the second discharge pipe.

[0009] Preferably: an air outlet pipe is installed on the top of the sulfide absorption box.

[0010] The beneficial effect of the utility model is as follows: when the MVR exhaust gas treatment system device is used, the exhaust gas discharged by the MVR system enters the heat exchange tube, and the exhaust gas is cooled by the tap water in the cooling box, and then the exhaust gas enters the booster pump for pressurization, and the pressurized exhaust gas enters multiple annular tubes through the shunt pipe, and then the exhaust gas is discharged to various places in the nitride absorption box through the first air outlet, so that the exhaust gas and the chemical reaction liquid are in contact more fully, and then the nitride in the exhaust gas is fully removed, and then the exhaust gas is transported to the inner bottom of the sulfide absorption box through the guide pipe, and the first gear, the second gear and the stirring shaft are driven by the driving motor to rotate, and the exhaust gas and the chemical reaction liquid are stirred and mixed by the stirring shaft, so that the chemical reaction liquid fully absorbs the sulfide in the exhaust gas, and finally, the exhaust gas is discharged from the exhaust pipe. In summary, the utility model fully absorbs the nitride and sulfide in the exhaust gas and reduces the pollution to the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0012] Figure 2 It is an internal sectional view of the present utility model.

[0013] Figure 3 It is a partial structure diagram of the utility model Figure 1 .

[0014] Figure 4 It is a partial structure diagram of the utility model Figure 2 .

[0015] Legend:

[0016] 1. Cooling box; 101. Water inlet pipe; 102. Water outlet pipe; 2. Nitride absorption box; 201. First feed pipe; 202. First plug; 203. First discharge pipe; 204. First end cover; 3. Sulfide absorption box; 301. Second feed pipe; 302. Second plug; 303. Second discharge pipe; 304. Second end cover; 4. Heat exchange tube; 5. Booster pump; 6. Diverter mechanism; 601. Diverter pipe; 602. Annular pipe; 603. First air outlet; 7. Flow guide pipe; 701. Second air outlet; 8. Mixing mechanism; 801. Drive motor; 802. First gear; 803. Second gear; 804. Agitator shaft; 9. Air outlet pipe. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Specific examples are given below.

[0019] See also Figure 1 to Figure 4In the embodiment of the utility model, a system device for treating exhaust gas of MVR includes a cooling box 1, a nitride absorption box 2, a sulfide absorption box 3, a heat exchange pipe 4, a booster pump 5, a flow diversion mechanism 6, a flow guide pipe 7, a mixing mechanism 8 and an exhaust pipe 9. The cooling box 1 is provided with a heat exchange pipe 4, the heat exchange pipe 4 is made of copper to have good thermal conductivity, the heat exchange pipe 4 is connected to the exhaust pipe of the MVR system, and the top of the cooling box 1 is provided with a water inlet pipe 101. The water inlet pipe 10 1 is connected to the external tap water, a water outlet pipe 102 is arranged at the lower left of the cooling box 1, a booster pump 5 connected to the heat exchange pipe 4 is arranged on the right side of the cooling box 1, a nitride absorption box 2 is arranged on the right side of the booster pump 5, a chemical reaction liquid reacting with nitride is stored in the nitride absorption box 2, a flow dividing mechanism 6 extending to the inside of the nitride absorption box 2 is connected to the booster pump 5, a sulfide absorption box 3 is arranged on the right side of the nitride absorption box 2, a chemical reaction liquid reacting with sulfide is stored in the sulfide absorption box 3 Chemical reaction liquid, a guide pipe 7 extending to the bottom of the sulfide absorption box 3 is installed on the nitride absorption box 2, and a plurality of second air outlets 701 are arranged at the lower end of the guide pipe 7, an air outlet pipe 9 is installed on the top of the sulfide absorption box 3, and a mixing mechanism 8 extending to the inside of the sulfide absorption box 3 is installed on the top of the sulfide absorption box 3. When in use, the exhaust gas discharged by the MVR system enters the heat exchange pipe 4, and the exhaust gas is cooled by the tap water in the cooling box 1, and then the exhaust gas enters the booster pump 5 for The pressurized exhaust gas is dispersed to various places in the nitride absorption box 2 through the diversion mechanism 6, so that the exhaust gas and the chemical reaction liquid in the nitride absorption box 2 can fully contact and react to remove the nitride in the exhaust gas. Then, the exhaust gas is transported to the inner bottom end of the sulfide absorption box 3 through the guide pipe 7, and the exhaust gas and the chemical reaction liquid in the sulfide absorption box 3 are stirred and mixed by the mixing mechanism 8, so that the chemical reaction liquid can fully absorb the sulfide in the exhaust gas. Finally, the exhaust gas is discharged from the outlet pipe 9.

[0020] A first feed pipe 201 is arranged on the top of the nitride absorption box 2, and a first plug 202 is detachably installed on the first feed pipe 201; a first discharge pipe 203 is arranged at the lower right of the nitride absorption box 2, and a first end cover 204 is detachably installed on the first discharge pipe 203; a second feed pipe 301 is arranged on the top of the sulfide absorption box 3, and a second plug 302 is detachably installed on the second feed pipe 301; a second discharge pipe 303 is arranged at the lower right of the sulfide absorption box 3, and a second end cover 304 is detachably installed on the second discharge pipe 303.

[0021] The diversion mechanism 6 includes: a diversion pipe 601, an annular pipe 602 and a first air outlet 603. The diversion pipe 601 is connected to the boost pump 5. A plurality of annular pipes 602 are arranged in the nitride absorption box 2. The diversion pipe 601 is connected to the plurality of annular pipes 602. A plurality of first air outlets 603 are arranged on the annular pipes 602. When in use, the exhaust gas enters the plurality of annular pipes 602 through the diversion pipe 601, and then the exhaust gas is discharged to various places in the nitride absorption box 2 through the first air outlet 603, so that the exhaust gas can be in more complete contact with the chemical reaction liquid.

[0022] The mixing mechanism 8 includes: a driving motor 801, a first gear 802, a second gear 803 and a stirring shaft 804. The driving motor 801 is fixed on the sulfide absorption box 3. The first gear 802 is installed on the output shaft of the driving motor 801. A second gear 803 meshing with the first gear 802 is installed on one side of the first gear 802. The second gear 803 is installed on the stirring shaft 804. The stirring shaft 804 is rotatably connected to the sulfide absorption box 3. When in use, the driving motor 801 drives the first gear 802, the second gear 803 and the stirring shaft 804 to rotate, and the tail gas and the chemical reaction liquid are stirred and mixed by the stirring shaft 804.

[0023] Working principle: When the MVR exhaust gas treatment system device is in use, the exhaust gas discharged by the MVR system enters the heat exchange tube 4, and the exhaust gas is cooled by the tap water in the cooling box 1. Then, the exhaust gas enters the booster pump 5 for pressurization. The pressurized exhaust gas enters the multiple annular tubes 602 through the diverter pipe 601, and then the exhaust gas is discharged to various places in the nitride absorption box 2 through the first air outlet 603, so that the exhaust gas and the chemical reaction liquid can be more fully contacted, and then the nitride in the exhaust gas is fully removed. Then, the exhaust gas is transported to the inner bottom end of the sulfide absorption box 3 through the guide pipe 7, and the first gear 802, the second gear 803 and the stirring shaft 804 are driven to rotate by the driving motor 801, and the exhaust gas and the chemical reaction liquid are stirred and mixed by the stirring shaft 804, so that the chemical reaction liquid fully absorbs the sulfide in the exhaust gas. Finally, the exhaust gas is discharged from the outlet pipe 9.

[0024] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A system device for MVR tail gas treatment, characterized in that: The invention comprises a cooling box (1), a nitride absorption box (2), a sulfide absorption box (3), a heat exchange pipe (4), a booster pump (5), a flow dividing mechanism (6), a flow guide pipe (7), a mixing mechanism (8) and an air outlet pipe (9), wherein the heat exchange pipe (4) is installed in the cooling box (1), a booster pump (5) connected to the heat exchange pipe (4) is arranged on the right side of the cooling box (1), a nitride absorption box (2) is arranged on the right side of the booster pump (5), and a booster pump (5) is arranged on the right side of the booster pump (5). A flow diversion mechanism (6) extending to the interior of the nitride absorption box (2) is connected, a sulfide absorption box (3) is arranged on the right side of the nitride absorption box (2), a flow guide pipe (7) extending to the bottom end of the interior of the sulfide absorption box (3) is installed on the nitride absorption box (2), a plurality of second air outlet holes (701) are arranged at the lower end of the flow guide pipe (7), a mixing mechanism (8) extending to the interior of the sulfide absorption box (3) is installed on the top of the sulfide absorption box (3), and the flow diversion mechanism (6) ) comprises: a shunt pipe (601), an annular pipe (602) and a first air outlet (603), the shunt pipe (601) being connected to a booster pump (5), a plurality of annular pipes (602) being arranged in the nitride absorption box (2), the shunt pipe (601) being connected to the plurality of annular pipes (602), each of the annular pipes (602) being provided with a plurality of first air outlets (603), the mixing mechanism (8) comprising: a driving motor (801), a first gear (8 02), a second gear (803) and a stirring shaft (804), the driving motor (801) is fixed on the sulfide absorption box (3), the output shaft of the driving motor (801) is equipped with a first gear (802), one side of the first gear (802) is equipped with a second gear (803) meshing with the first gear (802), the second gear (803) is installed on the stirring shaft (804), and the stirring shaft (804) is rotatably connected to the sulfide absorption box (3).

2. The MVR tail gas treatment system according to claim 1, characterized in that: The heat exchange tube (4) is made of copper.

3. The MVR tail gas treatment system according to claim 1, characterized in that: A water inlet pipe (101) is arranged on the top of the cooling box (1), and the water inlet pipe (101) is connected to external tap water. A water outlet pipe (102) is arranged at the lower left of the cooling box (1).

4. The MVR tail gas treatment system according to claim 1, characterized in that: A first feed pipe (201) is arranged on the top of the nitride absorption box (2), and a first plug (202) is detachably mounted on the first feed pipe (201); a first discharge pipe (203) is arranged at the lower right of the nitride absorption box (2), and a first end cover (204) is detachably mounted on the first discharge pipe (203); a second feed pipe (301) is arranged on the top of the sulfide absorption box (3), and a second plug (302) is detachably mounted on the second feed pipe (301); a second discharge pipe (303) is arranged at the lower right of the sulfide absorption box (3), and a second end cover (304) is detachably mounted on the second discharge pipe (303).

5. The MVR tail gas treatment system according to claim 1, characterized in that: An air outlet pipe (9) is installed on the top of the sulfide absorption box (3).

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