Desulfurization device

Abstract

The utility model provides a desulfurization device which comprises a desulfurization tower which comprises a tower body, the top end of the tower body is provided with a flue gas outlet, and the bottom of the tower body is provided with a flue gas inlet; the gas inlet assembly is connected with the flue gas inlet; the desulfurization assembly comprises a water tank, a filler layer and a spraying unit, the water tank is arranged at the lower end in the tower body and used for containing a reaction solution, the filler layer is located above the water tank, the spraying unit is installed on the tower body, and a water spraying opening of the spraying unit is located above the filler layer; the solution temperature control assembly comprises a cold-heat exchanger and a first exchange pipe, the input end and the output end of the cold-heat exchanger are connected with the two ends of the first exchange pipe respectively, a temperature sensor is installed in the water tank, and a controller is installed outside the tower body. The temperature sensor and the cold-heat exchanger are electrically connected with the controller.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization equipment, in particular to a desulfurization device. Background Art

[0002] Boiler flue gas contains harmful gases and smoke, which are the main substances that pollute the atmosphere. The main harmful gas in boiler flue gas is sulfur dioxide, so desulfurization is one of the important technical measures to prevent and control air pollution, and the desulfurization process has been widely used in industry.

[0003] After searching, the patent number CN202021715277.X discloses a boiler exhaust gas desulfurization device, including a dust collector, the air inlet end of the dust collector is connected to the boiler, and the air outlet end of the dust collector is connected to the desulfurization tower through an air duct, and an open liquid reaction box is provided at the bottom of the desulfurization tower, and the liquid reaction box is filled with calcium bicarbonate solution. A water pump is provided at the bottom of the liquid reaction box, and a packing layer, a desulfurization activated carbon mesh layer and a defogger plate are provided at the top of the liquid reaction box in the desulfurization tower from bottom to top. A water outlet is provided at the water outlet of the water pump, and a plurality of nozzles are provided at the other end of the water outlet pipe, and are arranged above the packing layer.

[0004] The stability and reaction efficiency of calcium bicarbonate solution are affected by temperature. Calcium bicarbonate solution is easily decomposed at high temperature to generate calcium carbonate, water and carbon dioxide. This decomposition will reduce the concentration of calcium bicarbonate in the solution, thereby affecting the desulfurization effect. However, the temperature of the calcium bicarbonate solution is not controlled accordingly in the above-mentioned patent, so that the desulfurization efficiency is affected to a certain extent. Based on this, the utility model proposes a desulfurization device. Utility Model Content

[0005] The utility model provides a desulfurization device to solve the above technical problems.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A desulfurization device comprises: a desulfurization tower, which comprises a tower body, a smoke outlet is provided at the top of the tower body, and a smoke inlet is provided at the bottom of the tower body; an air intake assembly, which is connected to the smoke inlet; a desulfurization assembly, which comprises a water tank, a packing layer and a spray unit, the water tank is arranged at the lower end of the tower body, the water tank is used to hold a reaction solution, the packing layer is located above the water tank, the spray unit is installed on the tower body, and the water spray port of the spray unit is located above the packing layer; a solution temperature control assembly, the solution temperature control assembly comprises a heat exchanger and an exchange tube 1, the input and output ends of the heat exchanger are respectively connected to the two ends of the exchange tube 1, a temperature sensor is installed in the water tank, a controller is installed outside the tower body, and the temperature sensor and the heat exchanger are respectively electrically connected to the controller.

[0008] The solution temperature control component also includes a waste heat heating unit, which includes an air pipe 1, a fan 1 and an exchange tube 2, one end of the air pipe 1 is connected to the smoke outlet, the other end of the air pipe 1 is connected to the input end of the fan 1, the exchange tube 2 is located in the water tank, and both ends of the exchange tube 2 pass through the tower body to the outside, one end of the exchange tube 2 is connected to the output end of the fan 1, and an electromagnetic valve 1 is installed on the air pipe 1, and the electromagnetic valve 1 and the fan 1 are electrically connected to the controller.

[0009] The parts of the exchange tube 1 and the exchange tube 2 located in the water tank are bent.

[0010] The air intake assembly includes a dust collector and a second fan, the dust collector and the second fan are electrically connected to the controller respectively, the air intake end of the dust collector is connected to the boiler, the air outlet pipe of the dust collector is connected to the input end of the second fan, and the output end of the second fan is connected to the flue gas inlet.

[0011] A demister is installed in the tower body, and the demister is located above the spray unit.

[0012] The spray unit includes a water pump, the input end of the water pump is connected to water pipe 1, the output end of the water pump is connected to water pipe 2, water pipe 2 is connected to water pipe 3, a spray head is installed on water pipe 3, and electromagnetic valve 2 is also installed on water pipe 3. The water pump and the electromagnetic valve 2 are electrically connected to the controller respectively.

[0013] The water tank is respectively connected with a medicine inlet pipe and a water inlet pipe, and electromagnetic valve three and electromagnetic valve four are respectively installed on the medicine inlet pipe and the water inlet pipe. A liquid level sensor is arranged in the water tank, and the liquid level sensor, electromagnetic valve three and electromagnetic valve four are respectively electrically connected to the controller. A drain pipe is also arranged on the tower body, and the drain pipe is communicated with the water tank.

[0014] An inspection hole is provided on the tower body.

[0015] Beneficial effects of the utility model:

[0016] The utility model desulfurization device controls the temperature of the reaction solution by means of a solution temperature control component, controls the temperature within a certain range, can maintain the stability of the calcium bicarbonate solution, promotes the reaction, and improves the desulfurization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a block diagram of a desulfurization device according to an embodiment of the utility model.

[0018] Description of reference numerals:

[0019] 1-tower body; 2-smoke outlet; 3-smoke inlet; 4-water tank; 5-packing layer; 6-cold and heat exchanger; 7-exchange tube 1; 8-air pipe 1; 9-fan 1; 10-exchange tube 2; 11-electromagnetic valve 1; 12-dust collector; 13-fan 2; 14-demister; 15-water pump; 16-water pipe 1; 17-water pipe 2; 18-water pipe 3; 19-sprinkler head; 20-electromagnetic valve 2; 21-medicine inlet pipe; 22-water inlet pipe; 23-inspection hole; 24-drain pipe. DETAILED DESCRIPTION

[0020] 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 in 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.

[0021] like Figure 1 As shown, a desulfurization device of an embodiment of the utility model may include a desulfurization tower, a desulfurization component, an air intake component and a solution temperature control component, wherein the desulfurization tower may include a tower body 1, a flue gas outlet 2 is provided at the top of the tower body 1, and a flue gas inlet 3 is provided at the bottom of the tower body 1; the air intake component is connected to the flue gas inlet 3; the desulfurization component may include a water tank 4, a packing layer 5 and a spray unit, wherein the water tank 4 is arranged at the lower end inside the tower body 1, the water tank 4 is used to hold a reaction solution, specifically a calcium bicarbonate solution, the packing layer 5 is located above the water tank 4, the spray unit is installed on the tower body 1, and the water spray port of the spray unit is located above the packing layer 5; the solution temperature control component may include a heat exchanger 6 and an exchange tube 7, the input and output ends of the heat exchanger 6 are respectively connected to the two ends of the exchange tube 7, a temperature sensor is installed in the water tank 4, a controller is installed outside the tower body 1, and the temperature sensor and the heat exchanger 6 are respectively electrically connected to the controller.

[0022] In the embodiment of the utility model, the heating or cooling of the calcium bicarbonate solution is achieved by the provided cold heat exchanger 6 to increase or decrease the solution to a suitable temperature.

[0023] In one embodiment of the utility model, the solution temperature control component also includes a waste heat heating unit, the waste heat heating unit includes an air pipe 8, a fan 9 and an exchange tube 10, one end of the air pipe 8 is connected to the flue gas outlet 2, the other end of the air pipe 8 is connected to the input end of the fan 9, the exchange tube 10 is located in the water tank 4, and the two ends of the exchange tube 10 pass through the tower body 1 to the outside thereof, one end of the exchange tube 10 is connected to the output end of the fan 9, and the air pipe 8 is installed with an electromagnetic valve 11, and the electromagnetic valve 11 and the fan 9 are electrically connected to the controller. If the temperature of the calcium bicarbonate solution is too low, the waste heat heating unit can be used to heat the calcium bicarbonate solution by using the waste heat of the flue gas discharged after desulfurization to increase the temperature of the calcium bicarbonate solution. If the flue gas waste heat alone cannot be used to heat the solution to a suitable temperature, the cold heat exchanger 6 can be started to achieve corresponding heating.

[0024] In one embodiment of the present invention, the parts of the exchange tube 1 7 and the exchange tube 2 10 located in the water tank 4 are bent.

[0025] In one embodiment of the utility model, the air intake component may include a dust collector 12 and a fan 13, the dust collector 12 and the fan 13 are electrically connected to the controller respectively, the air intake end of the dust collector 12 is connected to the boiler, the air outlet pipe of the dust collector 12 is connected to the input end of the fan 13, the output end of the fan 13 is connected to the flue gas inlet 3, and the flue gas generated by the boiler is transported to the desulfurization tower through the arranged air intake component.

[0026] In one embodiment of the present invention, a demister 14 is installed in the tower body 1, and the demister 14 is located above the spray unit.

[0027] In one embodiment of the utility model, the spray unit may include a water pump 15, the input end of the water pump 15 is connected to a water pipe 16, the output end of the water pump 15 is connected to a water pipe 2 17, the water pipe 2 17 is connected to a water pipe 3 18, the water pipe 3 18 is installed with a spray head 19, the water pipe 3 18 is also installed with an electromagnetic valve 2 20, the water pump 15 and the electromagnetic valve 2 20 are respectively electrically connected to the controller.

[0028] In one embodiment of the utility model, the water tank 4 is respectively connected to a drug inlet pipe 21 and a water inlet pipe 22, and electromagnetic valve three and electromagnetic valve four are respectively installed on the drug inlet pipe 21 and the water inlet pipe 22. A liquid level sensor is provided in the water tank 4, and the liquid level sensor, the electromagnetic valve three and the electromagnetic valve four are respectively electrically connected to the controller. A drain pipe 24 is also provided on the tower body 1, and the drain pipe 24 is connected to the water tank 4.

[0029] In one embodiment of the present invention, an inspection hole 23 is provided on the tower body 1 , and the interior of the desulfurization tower is inspected and maintained through the inspection hole 23 .

[0030] In the utility model, the water pump 15 transports the calcium bicarbonate solution to the spray head 19 through the water pipe 1 16, the water pipe 2 17 and the water pipe 3 18, and then sprays it on the packing layer 5 from the spray head 19. The flue gas reacts with the calcium bicarbonate solution on the packing layer 5 to absorb sulfur dioxide in the exhaust gas, and finally passes through the demister 14 to remove water vapor in the gas before being discharged.

[0031] According to the desulfurization device of the embodiment of the utility model, the temperature of the reaction solution is controlled by the solution temperature control component, and its temperature is controlled within a certain range, which can maintain the stability of the calcium bicarbonate solution, promote the reaction, and improve the desulfurization efficiency.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, various modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A desulfurization device, characterized in that: include: A desulfurization tower comprises a tower body, wherein a flue gas outlet is provided at the top of the tower body and a flue gas inlet is provided at the bottom of the tower body; An air intake assembly, the air intake assembly being connected to the smoke inlet; A desulfurization assembly, comprising a water tank, a packing layer and a spray unit, wherein the water tank is arranged at the lower end of the tower body and is used to contain a reaction solution, the packing layer is located above the water tank, the spray unit is installed on the tower body, and a water spray port of the spray unit is located above the packing layer; A solution temperature control component, the solution temperature control component includes a heat exchanger and an exchange tube 1, the input and output ends of the heat exchanger are respectively connected to the two ends of the exchange tube 1, a temperature sensor is installed in the water tank, a controller is installed outside the tower body, and the temperature sensor and the heat exchanger are electrically connected to the controller respectively.

2. The desulfurization device according to claim 1, characterized in that: The solution temperature control component also includes a waste heat heating unit, which includes an air pipe 1, a fan 1 and an exchange tube 2, one end of the air pipe 1 is connected to the smoke outlet, the other end of the air pipe 1 is connected to the input end of the fan 1, the exchange tube 2 is located in the water tank, and both ends of the exchange tube 2 pass through the tower body to the outside, one end of the exchange tube 2 is connected to the output end of the fan 1, and an electromagnetic valve 1 is installed on the air pipe 1, and the electromagnetic valve 1 and the fan 1 are electrically connected to the controller.

3. The desulfurization device according to claim 2, characterized in that: The parts of the exchange tube 1 and the exchange tube 2 located in the water tank are bent.

4. The desulfurization device according to claim 3, characterized in that: The air intake assembly includes a dust collector and a second fan, the dust collector and the second fan are electrically connected to the controller respectively, the air intake end of the dust collector is connected to the boiler, the air outlet pipe of the dust collector is connected to the input end of the second fan, and the output end of the second fan is connected to the flue gas inlet.

5. The desulfurization device according to claim 4, characterized in that: A demister is installed in the tower body, and the demister is located above the spray unit.

6. The desulfurization device according to claim 5, characterized in that: The spray unit includes a water pump, the input end of the water pump is connected to water pipe 1, the output end of the water pump is connected to water pipe 2, water pipe 2 is connected to water pipe 3, a spray head is installed on water pipe 3, and electromagnetic valve 2 is also installed on water pipe 3. The water pump and the electromagnetic valve 2 are electrically connected to the controller respectively.

7. The desulfurization device according to claim 6, characterized in that: The water tank is respectively connected with a medicine inlet pipe and a water inlet pipe, and electromagnetic valve three and electromagnetic valve four are respectively installed on the medicine inlet pipe and the water inlet pipe. A liquid level sensor is arranged in the water tank, and the liquid level sensor, electromagnetic valve three and electromagnetic valve four are respectively electrically connected to the controller. A drain pipe is also arranged on the tower body, and the drain pipe is communicated with the water tank.

8. The desulfurization device according to claim 7, characterized in that: An inspection hole is provided on the tower body.

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