Environment-friendly flue gas waste heat recovery device

Abstract

The utility model discloses an environment-friendly flue gas waste heat recovery device, which comprises a heat exchange piece, an adsorption piece and a neutralization piece, the heat exchange piece comprises a heat exchange box, a heat exchange pipe is fixed in the heat exchange box, the two ends of the heat exchange pipe respectively penetrate through the end faces of the two sides of the heat exchange box, and a filter cartridge is fixedly communicated with the vertical end face of one side of the heat exchange box. An air inlet pipe is horizontally and fixedly communicated with the bottom of the outer circumferential surface of the filter cartridge, an air guide pipe is vertically and fixedly communicated with the top surface of the filter cartridge, one end of the air guide pipe of the filter cartridge is fixedly communicated with the vertical end surface of one side of the heat exchange box, and a first air pump is fixedly communicated with the air guide pipe of the filter cartridge; the adsorption part comprises an adsorption box and solves the problems that flue gas is directly introduced into purified liquid, part of flue gas heat is absorbed by the purified liquid, the rest flue gas heat is directly discharged, and if the heat is directly discharged and dissipated and is absorbed by the purified liquid, heat loss is caused, and the recycling efficiency of the heat in the flue gas is affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flue gas recovery device technical field more specifically, relate to a flue gas environmental protection waste heat recovery device. BACKGROUND

[0002] The steel joint enterprise generally has the by-product coal gas of self production, for example: the coke oven gas of coking, the blast furnace gas of blast furnace ironmaking, the converter gas of converter steelmaking, the steel rolling heating furnace of conventional combustion, the fuel is high coke mixed coal gas or high coke conversion mixed coal gas, because the coke oven gas, blast furnace gas contains the sulfide of coal, the sulfide concentration of steel rolling heating furnace flue gas fluctuates up and down with the sulfide concentration in mixed coal gas, there is sulfide in flue gas when discharging, the sulfide is discharged along with flue gas, causes the pollution of environment.

[0003] The existing announcement number for CN2925584Y, name is a flue gas purifier, including the body, fan, air inlet pipe and air outlet pipe, the lower part in the body is equipped with the liquid storage cavity, the upper part is equipped with the adsorption dehydration layer, the air inlet pipe is equipped with the purification liquid supply spray pipe, is equipped with the orifice plate in the export end of this air inlet pipe, the air inlet pipe is communicated with the liquid in the liquid storage cavity, the air outlet pipe is communicated with the upper part of the liquid of liquid storage cavity, is equipped with the spray pipe in the liquid supply mouth of the air inlet pipe and the body outside connection, the flue gas that enters the body is carried out first humidification purification treatment in the air inlet pipe, then carries out second purification treatment to the desulfurization dust removal liquid in the liquid storage cavity, finally carries out third dehydration treatment to the adsorption layer liquid in the upper part of the body, after three treatments, the dust and sulfide and nitride in flue gas have been more effective purification treatment, and the purification efficiency is improved.

[0004] But the flue gas of discharging above exists more heat, the flue gas is directly introduced into the purification liquid, and the heat of flue gas is partially absorbed by the purification liquid, and the rest is directly discharged, if these heat is directly discharged and lost and absorbed by the purification liquid, causes heat loss, and the heat recovery and utilization efficiency in flue gas is affected. SUMMARY

[0005] 1. The technical problem to be solved

[0006] In view of the problems in the prior art, the utility model aims at providing a flue gas environmental protection waste heat recovery device, which overcomes the above technical defects.

[0007] Technical scheme

[0008] To solve the above problems, the utility model adopts the following technical scheme.

[0009] The utility model provides a flue gas environmental protection waste heat recovery device, including heat exchange spare, suction accessory and neutralization spare, heat exchange spare includes heat exchange box, the inside fixed heat exchange pipe of heat exchange box, and the both ends of heat exchange pipe respectively penetrate the both sides end face of heat exchange box and set up, the side vertical end face of heat exchange box is connected with the fixed filter cartridge, and the outer circumferential surface bottom of filter cartridge is connected with the fixed air inlet pipe, the top surface of filter cartridge is connected with the fixed air guide pipe, and the air guide pipe one end of filter cartridge is connected with the fixed first air pump on the side vertical end face of heat exchange box, and suction accessory sets up in the other side of heat exchange box, and suction accessory includes adsorption box, and adsorption box sets up in the other side of heat exchange box, and the side end face bottom of adsorption box is connected with the fixed air inlet frame of communication, and the other end of air inlet frame is connected with the fixed side end face of heat exchange box, and the top surface one side of adsorption box is connected with the fixed exhaust frame of communication, and the bottom surface of adsorption box is connected with the fixed material drop through slot, and neutralization spare includes neutralization box, and the vertical communication of neutralization box is fixed in material drop through slot, and the neutralization liquid is filled in the neutralization box.

[0010] Further, the inside of the filter cartridge is vertically fixed with a mesh tube, and the bottom of the filter cartridge is open.

[0011] Further, the bottom of the filter cartridge is vertically provided with a dust falling tube, and the dust falling tube is assembled and connected with the internal thread of the filter cartridge.

[0012] Further, the air guide pipe of the filter cartridge is connected with an exhaust pipe at one end, and the exhaust pipe is fixed through the side end face of the heat exchange box.

[0013] Further, the other end of the heat exchange pipe is connected with a second air pump.

[0014] Further, the inside of the neutralization box is horizontally rotatably connected with a stirring rod, and the outside end face of the neutralization box is horizontally fixed with a stirring motor, and the output end of the stirring motor is fixed at the end of the stirring rod.

[0015] Further, the outside wall of the neutralization box is connected with a liquid adding pipe at the top, and the bottom surface of the neutralization box is vertically connected with a sewage discharge pipe. Advantages

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] In use, the air inlet pipe on the heat exchange box is communicated with the chimney of the heating furnace, the first air pump on the air guide pipe of the filter cartridge is started, the flue gas of the heating furnace is filtered to remove dust in the mesh tube in the filter cartridge, the flue gas enters the heat exchange box, the flue gas contacts the outer wall of the heat exchange pipe in the heat exchange box, the heat in the flue gas is transferred to the air flowing in the heat exchange pipe through the wall of the heat exchange pipe, then the air carries the heat for recycling, the temperature of the flue gas is regulated to below 100 DEG C, meanwhile, part of the water vapor in the flue gas is condensed into water and the sulfide in the flue gas forms sulfur liquid mist aerosol, then the flue gas and the sulfur liquid mist aerosol are guided into the adsorption box through the air inlet frame of the adsorption box, then the flue gas and the sulfur liquid mist aerosol are in the adsorption box, the flue gas and the sulfur liquid mist aerosol are blocked by one side of the wall of the adsorption box, due to the different specific gravities of the gas and the liquid, when the liquid and the gas flow together, if encountering an obstruction, the gas will flow around the obstruction, while the liquid continues to have a forward speed, the forward liquid adheres to the obstruction wall and is collected into the sulfide neutralization device under the action of gravity, and the part of the sulfur liquid mist aerosol in the flue gas is intercepted; the neutralized sulfur liquid mist aerosol is flowed into the neutralization tank under the action of gravity, the limestone solution in the neutralization tank neutralizes and purifies the sulfur liquid mist aerosol, so that the residual heat in the flue gas is recycled, and the heat utilization efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an overall structure schematic view of the utility model;

[0019] Figure 2 It is an overall structure schematic view of the utility model in a decomposed state;

[0020] Figure 3 It is a structure schematic view of the heat exchange part in the implementation of the utility model in a decomposed state;

[0021] Figure 4 It is a structure schematic view of the adsorption part in the implementation of the utility model in a decomposed state;

[0022] Figure 5 It is a structure schematic view of the neutralization part in the implementation of the utility model in a decomposed state.

[0023] Mark explanation in drawing:

[0024] 1, heat exchange part; 11, heat exchange box; 12, filter cartridge; 121, mesh tube; 122, air inlet pipe; 123, ash falling cylinder; 124, exhaust pipe; 13, first air pump; 14, heat exchange pipe; 15, second air pump; 2, adsorption part; 21, adsorption box; 22, air inlet frame; 23, exhaust frame; 24, material falling through slot; 3, neutralization part; 31, neutralization tank; 32, liquid adding pipe; 33, stirring rod; 34, stirring motor; 35, blowdown pipe. DETAILED DESCRIPTION

[0025] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments, and all the other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative labor fall within the protection scope of the present application.

[0026] Please refer to Figures 1-5The utility model provides a flue gas environmental protection waste heat recovery device, including heat exchange spare 1, suction accessory 2 and neutralization spare 3, heat exchange spare 1 includes heat exchange box 11, the inside fixed heat exchange pipe 14 of heat exchange box 11, and the both ends of heat exchange pipe 14 are respectively through the both sides end face of heat exchange box 11 setting, the vertical end face of one side of heat exchange box 11 is connected with the fixed filter cylinder 12, and the outer circumferential surface bottom of filter cylinder 12 is horizontally connected with the fixed air inlet pipe 122, the top surface of filter cylinder 12 is vertically connected with the fixed gas guide pipe, and one end of the gas guide pipe of filter cylinder 12 is connected with the fixed vertical end face on one side of heat exchange box 11, and the gas guide pipe of filter cylinder 12 is connected with the fixed first air pump 13, suction accessory 2 is arranged at the other side of heat exchange box 11, and suction accessory 2 includes adsorption box 21, and adsorption box 21 is arranged at the other side of heat exchange box 11, and adsorption box 21 is connected with the fixed air inlet frame 22 near the bottom of the side end face of heat exchange box 11, and the other end of air inlet frame 22 is connected with the fixed side end face of heat exchange box 11, and the top surface of adsorption box 21 is vertically connected with the fixed exhaust frame 23 on one side, and the bottom surface of adsorption box 21 is connected with the fixed material falling through slot 24, and neutralization spare 3 includes neutralization box 31, and neutralization box 31 is vertically connected in material falling through slot 24, and the neutralization liquid is filled in neutralization box 31, and the other end of heat exchange pipe 14 is connected with the fixed second air pump 15, and in use, the air inlet pipe 122 on the heat exchange box 11 of heat exchange spare 1 is connected with the chimney of heating furnace, the first air pump 13 on the gas guide pipe of filter cylinder 12 is started, the dust is removed in the net cylinder 121 in filter cylinder 12 by heating furnace flue gas, the flue gas enters heat exchange box 11, the flue gas contacts the outer wall of heat exchange pipe 14 in heat exchange box 11, the heat in flue gas is transferred to the air flowing in the inside through the wall of heat exchange pipe 14, then the air carries heat and is recycled and reused, the temperature of flue gas is regulated to below 100 DEG C, part of water vapor in flue gas is condensed into water and forms sulfur liquid aerosol with sulfide in flue gas, then the flue gas and sulfur liquid aerosol are guided into adsorption box 21 through air inlet frame 22 of adsorption box 21, then the flue gas and sulfur liquid aerosol are in adsorption box 21, the flue gas and sulfur liquid aerosol are blocked by one side of the wall, due to the different specific gravity of gas and liquid, if meeting the obstruction when the liquid and gas flow together, the gas will flow and go, and the liquid continues to have a forward speed due to inertia, the liquid that goes forward adheres to the obstruction wall and is collected in sulfide neutralization device under the action of gravity, and the part of sulfur liquid aerosol in flue gas is intercepted; the sulfur liquid aerosol that is intercepted is flowed into neutralization box 31 under the action of gravity, and the lime stone solution in neutralization box 31 neutralizes and purifies sulfur liquid aerosol, thereby recycling the waste heat in flue gas, and the heat utilization efficiency is improved.

[0027] Refer to Figure 3The inside of the filter cylinder 12 is vertically fixed with a mesh cylinder 121, and the bottom of the filter cylinder 12 is provided with an opening, and the inner wall of the filter cylinder 12 is provided with an internal thread on the bottom side, and the bottom opening end of the filter cylinder 12 is vertically provided with an ash falling cylinder 123, and the ash falling cylinder 123 is assembled and connected with the internal thread of the filter cylinder 12, and one end of the air guide pipe of the filter cylinder 12 is communicated and fixed with an exhaust pipe 124, and the exhaust pipe 124 is fixed through on the side end face of the heat exchange box 11. In use, the first air pump 13 on the air guide pipe of the filter cylinder 12 is started, the flue gas of the heating furnace is filtered to remove dust through the mesh cylinder 121 in the filter cylinder 12, the flue gas enters the heat exchange box 11, and the dust in the flue gas falls into the ash falling cylinder 123. The ash falling cylinder 123 is threadedly detachable with the filter cylinder 12, so that the collected dust can be easily poured out.

[0028] Referring to Figure 5 The inside of the neutralization tank 31 is horizontally rotatably connected with a stirring rod 33, and the outer side end face of the neutralization tank 31 is horizontally fixed with a stirring motor 34, and the output end of the stirring motor 34 is fixed on the end of the stirring rod 33. The outer wall of the neutralization tank 31 is communicated and fixed with a liquid adding pipe 32 on the upper side, and the bottom surface of the neutralization tank 31 is vertically communicated and fixed with a sewage discharge pipe 35. In use, the stirring motor 34 is started to drive the stirring rod 33 to rotate, so that the sulfur liquid mist aerosol and the neutralization liquid are fully mixed, thereby improving the purification effect of the sulfur liquid mist aerosol, and then the valve on the sewage discharge pipe 35 is opened to discharge the neutralized gypsum liquid.

[0029] In use, the air inlet pipe 122 on the heat exchange box 11 of the heat exchange device 1 is communicated with the heating furnace chimney, the first air pump 13 on the air guide pipe of the filter cylinder 12 is started, the flue gas of the heating furnace is filtered to remove dust through the mesh cylinder 121 in the filter cylinder 12, the flue gas enters the heat exchange box 11, the flue gas contacts the outer wall of the heat exchange pipe 14 in the heat exchange box 11, the heat in the flue gas is transferred to the air flowing inside through the wall of the heat exchange pipe 14, then the air carries heat for recycling, the temperature of the flue gas is regulated to below 100℃, at the same time, part of the water vapor in the flue gas is condensed into water, and the sulfide in the flue gas forms a sulfur liquid mist aerosol, then the flue gas and the sulfur liquid mist aerosol are guided into the adsorption box 21 through the air inlet frame 22 of the adsorption box 21, then the flue gas and the sulfur liquid mist aerosol are in the adsorption box 21, the flue gas and the sulfur liquid mist aerosol are blocked by one side of the box wall, because the specific gravity of gas and liquid is different, when the liquid and gas flow together, if they meet an obstruction, the gas will flow around, while the liquid continues to have a forward speed, the forward liquid adheres to the obstruction wall and is collected into the sulfide neutralization device under the action of gravity, part of the sulfur liquid mist aerosol in the flue gas is intercepted; the neutralized sulfur liquid mist aerosol flows into the neutralization tank 31 under the action of gravity, and the limestone solution filled in the neutralization tank 31 neutralizes and purifies the sulfur liquid mist aerosol.

[0030] The above merely describes a preferred embodiment of the present application; the scope of protection of the present application is not limited thereto. Any skilled person in the art, according to the technical scheme and improvement concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the scope of protection of the present application.

Claims

1. A flue gas environmentally friendly waste heat recovery device, characterized in that, The utility model relates to a heat exchange device, including heat exchange part (1), suction accessory (2) and neutralization part (3), heat exchange part (1) includes heat exchange box (11), the inside fixed heat exchange pipe (14) of heat exchange box (11), and the both ends of heat exchange pipe (14) are set up respectively and pass through the both sides end face of heat exchange box (11) and are arranged, the side vertical end face of heat exchange box (11) is connected with the fixed filter cartridge (12) in communication, and the outer circumferential surface bottom of filter cartridge (12) is connected with the air inlet pipe (122) in communication fixedly, the top surface of filter cartridge (12) is connected with the air guide pipe in communication fixedly vertically, and the air guide pipe one end of filter cartridge (12) is connected with the first air pump (13) in communication fixedly on the side vertical end face of heat exchange box (11), suction accessory (2) is arranged on the other side of heat exchange box (11), suction accessory (2) includes adsorption box (21), adsorption box (21) is arranged on the other side of heat exchange box (11), and adsorption box (21) is connected with the air inlet frame (22) in communication fixedly near the side end face bottom of heat exchange box (11), and the other end of air inlet frame (22) is connected in communication fixedly on the side end face of heat exchange box (11), the top surface one side of adsorption box (21) is connected with the exhaust frame (23) in communication fixedly vertically, and the bottom surface of adsorption box (21) is connected with the falling material through slot (24) in communication fixedly, neutralization part (3) includes neutralization box (31), and the neutralization box (31) is connected in communication fixedly in the falling material through slot (24), and the neutralization box (31) is filled with neutralization liquid.

2. The flue gas environmental protection waste heat recovery device according to claim 1, characterized in that: The inside of the filter cartridge (12) is vertically fixed with a mesh cylinder (121), and the bottom of the filter cartridge (12) is provided with an opening, and an internal thread is formed on the inner wall bottom side of the filter cartridge (12).

3. The flue gas environmentally friendly waste heat recovery device according to claim 2, characterized in that: A dust falling cylinder (123) is vertically arranged at the opening end of the bottom of the filter cartridge (12), and the dust falling cylinder (123) is assembled and connected with the internal thread of the filter cartridge (12).

4. The flue gas environmentally friendly waste heat recovery device according to claim 3, characterized in that: One end of the air guide pipe of the filter cartridge (12) is connected with an exhaust pipe (124) in communication, and the exhaust pipe (124) is fixedly connected through the side end face of the heat exchange box (11).

5. The flue gas environmentally friendly waste heat recovery device according to claim 4, characterized in that: The other end of the heat exchange pipe (14) is connected with a second air pump (15) in communication.

6. The flue gas environmentally friendly waste heat recovery device according to claim 5, characterized in that: A stirring rod (33) is horizontally rotationally connected in the inside of the neutralization box (31), a stirring motor (34) is fixedly arranged on the outside end face of the neutralization box (31), and the output end of the stirring motor (34) is fixed on the end of the stirring rod (33).

7. The flue gas environmentally friendly waste heat recovery device according to claim 6, characterized in that: A liquid adding pipe (32) is connected in communication on the outside wall upper side of the neutralization box (31), and a sewage discharge pipe (35) is connected in communication vertically on the bottom surface of the neutralization box (31).

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