CN212316050U - Furnace gas purification device with environmental protection function - Google Patents

Abstract

The utility model discloses a burner gas purifier with environmental protection belongs to burner gas purification technical field, including furnace body A, furnace body B, outlet duct and intake pipe, furnace gas inlet pipe and burner gas exit tube are connected respectively to furnace body A and furnace body B's lateral wall, the single item pipe A of the mutual intercommunication of opposite side wall mounting of furnace body A and furnace body B. The furnace gas purification device with the environment-friendly function has the advantages that the furnace gas flows into the furnace body A, the suction force generated by the Roots blower enables one part of the furnace gas to be discharged into the purification shell along the gas outlet pipe, and the other part of the furnace gas flows into the furnace body B through the single pipe A; the furnace gas exchanges heat by the spiral pipe, impurities in the furnace gas are crystallized into particles, the furnace gas is subjected to refiltering, the purified furnace gas flows into the heating cylinder, the heating cylinder continuously rotates to fully exchange heat with the outside, the purified furnace gas flows back to the furnace body A through the single pipe B, repeated purification is continuously carried out, a valve of a furnace gas outlet pipe is opened until the furnace gas is purified, the furnace gas is discharged, and the purification efficiency and the purification degree are improved.

Description

Furnace gas purification device with environmental protection function

Technical Field

The utility model relates to a burner gas purifies technical field, in particular to burner gas purifier with environmental protection.

Background

The maximum flue gas amount generated by production and processing of a closed manganese-silicon electric furnace is about 5500Nm3/h, the furnace gas temperature is 300-500 ℃, the highest temperature is not more than 700 ℃, the dust content is 25-45 g/Nm3, and the gas components are as follows: 65-75% of CO, 78-5% of H23, 45-7% of CH, less than 2% of O2 and 2-9.7% of N; furnace dust components: SO 25-15%, Al2O 33-7%, FeO-3%, MgO 0.5-3%, CaO 4-6%, C0.1-0.5%, P0.1%, and Mn 17-30%; the particle size of the smoke dust is as follows: 0 to 1 μm: less than 10%, 3-10 μm: less than 80%, 10-40 μm: is less than 10%. Because of containing a large amount of toxic gases such as CO and the like, the environment pollution is easy to cause, and the damage to human organs can be caused by the direct suction, the furnace gas can not be directly discharged and must be purified. The existing purification method comprises furnace gas dust removal and cooling steps, and the single-stage dust removal and cooling requires large device power and fine equipment, so that the equipment cost is higher, and the purification efficiency is not satisfactory.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a burner gas purifier with environmental protection improves purification efficiency and degree to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a furnace gas purification device with an environment-friendly function comprises a furnace body A1, a furnace body B2, an air outlet pipe 3 and an air inlet pipe 4, wherein the side walls of the furnace body A1 and the furnace body B2 are respectively connected with a furnace gas inlet pipe 11 and a furnace gas outlet pipe 21, the other side walls of the furnace body A1 and the furnace body B2 are provided with single pipes A5 which are mutually communicated, a single pipe B6 which is mutually communicated is arranged between the furnace gas inlet pipe 11 and the furnace gas outlet pipe 21, and the single pipe A5 is used for enabling furnace gas in a furnace body A1 to flow into a furnace body B2;

the gas outlet pipe 3 and the gas inlet pipe 4 are respectively arranged at the top of the furnace body A1 and the top of the furnace body B2, the port of the gas outlet pipe 3 is connected with the purifying shell 7 through a Roots blower, and the port of the gas inlet pipe 4 is connected with the heating mechanism 8;

the purifying shell 7 is provided with a temperature reduction mechanism 71, a furnace gas discharge mechanism 72 and a filter mechanism 73, after the temperature of the furnace gas pumped by the Roots blower and flowing into the temperature reduction mechanism 71 is reduced, the pressure generated by the furnace gas discharge mechanism 72 pushes the cooled furnace gas to be purified and discharged into the temperature rise mechanism 8 through the filter mechanism 73, the temperature of the furnace gas is raised to the initial temperature by the temperature rise mechanism 8, and the furnace gas flows back to the furnace body B2 through the gas inlet pipe 4.

Preferably, the cooling mechanism 71 includes a spiral duct 711, a left partition 712 and a right partition 713, the top ends of the left partition 712 and the right partition 713 are connected to the purifying casing 7, the bottom of the left partition 712 and the bottom of the right partition 713 are open, the spiral duct 711 is disposed between the left partition 712 and the right partition 713, two ends of the spiral duct 711 extend to the outside of the purifying casing 7, the inlet end of the spiral duct 711 is used for the cooling air to enter, and the outlet pipe of the spiral duct 711 is connected to the heating mechanism 8.

Preferably, the furnace gas discharging mechanism 72 includes a cylinder 721, a support 722 and a push plate 723, the cylinder 721 is disposed outside the purifying housing 7, one end of the support 722 is connected to a piston rod of the cylinder 721, the other end of the support passes through the purifying housing 7 and is fixed to the push plate 723, the pressure change of the cylinder 721 drives the push plate 723 to slide in the purifying housing 7, the right partition 713 limits the maximum stroke of the push plate 723, and the furnace gas is pushed through the filtering mechanism 73 under high pressure by changing the internal gas pressure.

Preferably, the filtering mechanism 73 includes a primary filter screen 731, a middle filter screen 732 and a fine filter screen 733, the primary filter screen 731, the middle filter screen 732 and the fine filter screen 733 are sequentially arranged side by side, and the primary filter screen 731 is close to the left partition 712.

Preferably, a slot hole processed on the side wall of the purifying shell 7 beside the fine filter screen 733 is communicated with one end of the purifying pipe 9.

Preferably, the warming mechanism 8 comprises a warming shell 81, a warming barrel 82 and a heating sheet 83, two ends of the warming shell 81 are respectively connected with ports of the purifying tube 9 and the air inlet tube 4, two ends of the warming barrel 82 are connected with shaft sleeves communicated with the inside and inserted into the purifying tube 9 and the air inlet tube 4, the warming barrel 82 rotates around the purifying tube 9 and the air inlet tube 4, and the heating sheet 83 surrounds the inner wall of the warming shell 81 arranged outside the warming barrel 82;

the temperature rising shell 81 is also connected with the port of the spiral pipe 711, the gas after heat exchange flows into the temperature rising shell 81 to assist in temperature rising, and the heating sheet 83 is electrified to raise the temperature of purified gas in the temperature rising cylinder 82 to a specified temperature and then flows back to the furnace body B2 through the air inlet pipe 4.

Preferably, the anti-backflow mechanism 10 is installed inside the purge tube 9, the anti-backflow mechanism 10 includes a lower sealing plug 101, an upper sealing plug 102, a spring 103 and a retainer ring 104, the retainer ring 104 and the lower sealing plug 101 are fixed inside the purge tube 9, one end of the inner ring spring 103 of the retainer ring 104 is connected, the other end is fixed on the surface of the upper sealing plug 102, the upper sealing plug 102 abuts against the lower sealing plug 101, and the upper sealing plug 102 and the lower sealing plug 101 are provided with staggered through holes.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a furnace gas purification device with environmental protection function, the furnace gas flows into the furnace body A, the attraction generated by the Roots blower discharges a part of furnace gas into the purification shell along the gas outlet pipe, and the other part of furnace gas flows into the furnace body B through the single pipe A; the furnace gas entering the purifying shell exchanges heat by the cooling gas in the spiral pipe, after the temperature is reduced, the impurities in the furnace gas are crystallized into particles, the furnace gas is filtered by the primary filter screen, the middle filter screen and the fine filter screen, the impurities in the furnace gas are filtered, part of the gas is discharged into the heating cylinder, the gas exchanging heat is discharged into the heating shell for preheating, the heating plate works to increase the temperature in the heating shell, the purified furnace gas flows into the heating cylinder, the temperature rising cylinder continuously rotates to drive the gas in the temperature rising cylinder to disturb and fully exchange heat with the outside, the heating time is shortened, the heated furnace gas flows into the furnace body B, the temperature of the heated furnace gas needs to reach 550 plus 650 ℃, and the gas flows back to the furnace body A through the single pipe B, and the purification is continuously repeated until the purification of the furnace gas is finished, a valve of a furnace gas outlet pipe is opened, the furnace gas is discharged, and the purification efficiency and degree are improved.

Drawings

Fig. 1 is an overall plan view of the present invention;

FIG. 2 is a partial structure diagram of the present invention;

FIG. 3 is a structural view of the heating mechanism of the present invention;

FIG. 4 is a sealing state diagram of the anti-reflux mechanism of the present invention;

fig. 5 is a sealing opening diagram of the anti-reflux mechanism of the present invention.

In the figure: 1. a furnace body A; 11. furnace gas inlet pipe; 2. a furnace body B; 21. a furnace gas outlet pipe; 3. an air outlet pipe; 4. an air inlet pipe; 5. a single tube A; 6. a single tube B; 7. a purge housing; 71. a cooling mechanism; 711. a spiral tube; 712. a left baffle plate; 713. a right baffle plate; 72. a furnace gas discharge mechanism; 721. a cylinder; 722. a pillar; 723. pushing the plate; 73. a filtering mechanism; 731. a primary filter screen; 732. a middle filter screen; 733. a fine filter screen; 8. a temperature raising mechanism; 81. heating the shell; 82. a heating cylinder; 83. a heating plate; 9. a purge tube; 10. an anti-reflux mechanism; 101. a lower sealing plug; 102. an upper sealing plug; 103. a spring; 104. and (4) a baffle ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a furnace gas purification device with environmental protection function comprises a furnace body a1, a furnace body B2, an air outlet pipe 3 and an air inlet pipe 4, wherein the side walls of the furnace body a1 and the furnace body B2 are respectively connected with a furnace gas inlet pipe 11 and a furnace gas outlet pipe 21, furnace gas with impurities enters the furnace gas inlet pipe 11, the purified furnace gas is discharged from the furnace gas outlet pipe 21, a single pipe a5 which is mutually communicated is installed on the other side wall of the furnace body a1 and the furnace body B2, a single pipe B6 which is mutually communicated is installed between the furnace gas inlet pipe 11 and the furnace gas outlet pipe 21, the single pipe a5 and the single pipe B6 are in a single direction of gas, the single pipe a5 is used for flowing the furnace gas in the furnace body a1 into the furnace body B2, and the single pipe B6 is used for flowing back the furnace gas discharged from the furnace body B85;

the gas outlet pipe 3 and the gas inlet pipe 4 are respectively arranged at the top of the furnace body A1 and the furnace body B2, the port of the gas outlet pipe 3 is connected with the purifying shell 7 through a Roots blower, and the port of the gas inlet pipe 4 is connected with the heating mechanism 8;

the purifying shell 7 is provided with a cooling mechanism 71, a furnace gas discharging mechanism 72 and a filtering mechanism 73, after the temperature of the furnace gas is reduced after the furnace gas is extracted by the Roots blower and flows into the cooling mechanism 71, the pressure generated by the furnace gas discharging mechanism 72 pushes the cooled furnace gas to be purified and discharged into the heating mechanism 8 through the filtering mechanism 73, the furnace gas is increased to the initial temperature by the heating mechanism 8 and then flows back to the furnace body B2 through the air inlet pipe 4, and the furnace gas is continuously extracted, purified and refluxed to realize the purification of the furnace gas.

Referring to fig. 2, the temperature reducing mechanism 71 includes a spiral tube 711, a left partition 712 and a right partition 713, the top ends of the left partition 712 and the right partition 713 are connected to the purifying housing 7, the bottom of the spiral tube 711 is open, the spiral tube 711 is disposed between the left partition 712 and the right partition 713, two ends of the spiral tube 711 extend to the outside of the purifying housing 7, the inlet end of the spiral tube 711 is used for the cooling air to enter, the outlet of the spiral tube 711 is connected to the temperature increasing mechanism 8, the high-temperature furnace gas exchanges heat with the cooling air in the spiral tube 711, and the temperature of the furnace gas is reduced to 220.

The furnace gas discharge mechanism 72 comprises an air cylinder 721, a support 722 and a push plate 723, wherein the air cylinder 721 is arranged outside the purification shell 7, one end of the support 722 is connected with a piston rod of the air cylinder 721, the other end of the support passes through the purification shell 7 and is fixed with the push plate 723, the push plate 723 is driven to slide in the purification shell 7 by pressure change of the air cylinder 721, the maximum stroke of the push plate 723 is limited by a right partition plate 713, and furnace gas is pushed to pass through the filtering mechanism 73 under high pressure by changing internal air pressure.

The filtering mechanism 73 comprises a primary filter screen 731, a middle filter screen 732 and a fine filter screen 733, the primary filter screen 731, the middle filter screen 732 and the fine filter screen 733 are sequentially arranged side by side, the primary filter screen 731 is close to the left partition 712, and a slotted hole processed on the side wall of the purifying shell 7 beside the fine filter screen 733 is communicated with one end of the purifying pipe 9.

Referring to fig. 3, the warming mechanism 8 includes a warming shell 81, a warming barrel 82 and a heating plate 83, two ends of the warming shell 81 are respectively connected with ports of the purifying tube 9 and the air inlet tube 4, two ends of the warming barrel 82 are connected with shaft sleeves communicated with the inside and inserted into the purifying tube 9 and the air inlet tube 4, the warming barrel 82 rotates around the purifying tube 9 and the air inlet tube 4, and the heating plate 83 surrounds the inner wall of the warming shell 81 outside the warming barrel 82;

the temperature rising shell 81 is also connected with the port of the spiral pipe 711, the gas after heat exchange flows into the temperature rising shell 81 to assist in temperature rising, and the heating sheets 83 are electrified to raise the temperature of the purified gas in the temperature rising cylinder 82 to a specified temperature and then flow back to the furnace body B2 through the air inlet pipe 4.

Referring to fig. 4-5, the anti-backflow mechanism 10 is installed inside the purge tube 9, the anti-backflow mechanism 10 includes a lower sealing plug 101, an upper sealing plug 102, a spring 103 and a retainer ring 104, the retainer ring 104 and the lower sealing plug 101 are fixed inside the purge tube 9, one end of an inner ring spring 103 of the retainer ring 104 is connected, the other end is fixed on the surface of the upper sealing plug 102, the upper sealing plug 102 abuts against the lower sealing plug 101, and the upper sealing plug 102 and the lower sealing plug 101 are provided with staggered through holes to increase the air pressure inside the purge housing 7, the upper sealing plug 102 pushes the spring 103 to compress, the purge gas flows out of the two through holes into the temperature rising cylinder 82, and the purge efficiency and degree.

The working principle is as follows: the valve on the furnace gas inlet pipe 11 is opened, the valve on the furnace gas outlet pipe 21 is closed, the furnace gas flows into the furnace body A1, a part of the furnace gas is discharged into the purifying shell 7 along the gas outlet pipe 3 by the attraction force generated by the Roots blower, and the other part of the furnace gas flows into the furnace body B2 through the single pipe A5; furnace gas entering the purifying shell 7 is firstly subjected to heat exchange by cooling gas in the spiral pipe 711, after the temperature is reduced, impurities in the furnace gas are crystallized into particles, the air cylinder 721 extends the push plate 723 to increase the air pressure in the purifying shell 7, the furnace gas is subjected to triple filtration of the primary filter screen 731, the middle filter screen 732 and the fine filter screen 733, the impurities in the furnace gas are filtered, the upper sealing plug 102 of the anti-reflux mechanism 10 pushes the spring 103 to compress, the purifying pipe 9 is communicated, part of the gas is discharged into the warming barrel 82, when the push plate 723 is shortened by the air cylinder 721, the air pressure in the purifying shell 7 is reduced, the spring 103 pushes the upper sealing plug 102 to abut against the lower sealing plug 101 to seal, and the furnace gas in the Ro; the gas exchanging heat is discharged into the heating shell 81 for preheating, the heating sheet 83 works to increase the temperature in the heating shell 81, purified furnace gas flows into the heating cylinder 82, and the heating cylinder 82 continuously rotates to drive the gas in the heating cylinder 82 to disturb, so that the gas can fully exchange heat with the outside, and the heating time is shortened; the heated furnace gas flows into a furnace body B2, the temperature of the heated furnace gas needs to reach 550-650 ℃, the heated furnace gas flows back to a furnace body A1 through a single pipe B6, S1, S2 and S3 are continuously repeated until the purification of the furnace gas is finished, a valve of a furnace gas outlet pipe 21 is opened, and the furnace gas is discharged.

In summary, the following steps: the furnace gas purification device with the environmental protection function of the utility model has the advantages that the furnace gas flows into the furnace body A1, the attraction generated by the Roots blower causes a part of the furnace gas to be pumped out along the gas outlet pipe 3 and discharged into the purification shell 7, and the other part of the furnace gas flows into the furnace body B2 through the single pipe A5; furnace gas entering the purifying shell 7 is firstly exchanged with heat by cooling gas in the spiral pipe 711, the temperature is reduced, impurities in the furnace gas are crystallized into particles, the furnace gas is filtered by the primary filter screen 731, the middle filter screen 732 and the fine filter screen 733, the impurities in the furnace gas are filtered, part of the gas is discharged into the heating cylinder 82, the heat exchanged gas is discharged into the heating shell 81 for preheating, the heating sheet 83 works to increase the temperature in the heating shell 81, the purified furnace gas flows into the heating cylinder 82, the heating cylinder 82 rotates continuously to drive the gas in the heating cylinder 82 to disturb and exchange heat with the outside sufficiently, the heating time is shortened, the heated furnace gas flows into the furnace body B2, the temperature of the heated furnace gas needs to reach 550 and 650 ℃, the furnace gas is sent back to the furnace body A1 through the single pipe B6 to be purified continuously and repeatedly until the valve of the furnace gas outlet pipe 21 is opened after the purification of the furnace gas is finished, and discharging the furnace gas.

The above description is only the specific implementation manner of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the design of the present invention within the technical scope of the present invention.

Claims (7)

1. The furnace gas purification device with the environment-friendly function comprises a furnace body A (1), a furnace body B (2), an air outlet pipe (3) and an air inlet pipe (4), and is characterized in that the side walls of the furnace body A (1) and the furnace body B (2) are respectively connected with a furnace gas inlet pipe (11) and a furnace gas outlet pipe (21), single pipes A (5) which are mutually communicated are installed on the other side walls of the furnace body A (1) and the furnace body B (2), single pipes B (6) which are mutually communicated are installed between the furnace gas inlet pipe (11) and the furnace gas outlet pipe (21), and the single pipes A (5) are used for allowing furnace gas in the furnace body A (1) to flow into the furnace body B (2);

the gas outlet pipe (3) and the gas inlet pipe (4) are respectively arranged at the tops of the furnace body A (1) and the furnace body B (2), the port of the gas outlet pipe (3) is connected with the purification shell (7) through a Roots blower, and the port of the gas inlet pipe (4) is connected with the heating mechanism (8);

the purifying shell (7) is provided with a cooling mechanism (71), a furnace gas discharging mechanism (72) and a filtering mechanism (73), after the temperature of the furnace gas pumped by the Roots blower and flowing into the cooling mechanism (71) is reduced, the pressure generated by the furnace gas discharging mechanism (72) pushes the cooled furnace gas to be purified by the filtering mechanism (73) and discharged into the heating mechanism (8), and the furnace gas is increased to the initial temperature by the heating mechanism (8) and then flows back to the furnace body B (2) through the air inlet pipe (4).

2. The furnace gas purification device with environmental protection function of claim 1, wherein the temperature reduction mechanism (71) comprises a spiral pipe (711), a left partition plate (712) and a right partition plate (713), the top ends of the left partition plate (712) and the right partition plate (713) are connected with the purification shell (7), the bottom of the left partition plate (712) and the bottom of the right partition plate (713) are open, the spiral pipe (711) is arranged between the left partition plate (712) and the right partition plate (713), two ends of the spiral pipe (711) extend to the outside of the purification shell (7), the inlet end of the spiral pipe (711) is used for cooling gas to enter, and the outlet pipe of the spiral pipe (711) is connected with the temperature raising mechanism (.

3. An environmental-friendly furnace gas purification device as claimed in claim 2, wherein the furnace gas exhaust mechanism (72) comprises a cylinder (721), a support (722) and a push plate (723), the cylinder (721) is arranged outside the purification shell (7), one end of the support (722) is connected with a piston rod of the cylinder (721), the other end of the support penetrates through the purification shell (7) and is fixed with the push plate (723), the push plate (723) is driven by the pressure change of the cylinder (721) to slide in the purification shell (7), the maximum stroke of the push plate (723) is limited by a right partition plate (713), and the furnace gas is pushed through the filter mechanism (73) under high pressure by changing the internal air pressure.

4. The furnace gas purification device with environmental protection function as claimed in claim 1, wherein the filtering mechanism (73) comprises a primary filter screen (731), a middle filter screen (732) and a fine filter screen (733), the primary filter screen (731), the middle filter screen (732) and the fine filter screen (733) are arranged side by side in sequence, and the primary filter screen (731) is close to the left partition plate (712).

5. The furnace gas purification device with environmental protection function of claim 4, characterized in that the slot hole processed on the side wall of the purification shell (7) beside the fine filter screen (733) is communicated with one end of the purification pipe (9).

6. The furnace gas purification device with environmental protection function according to claim 1, wherein the warming mechanism (8) comprises a warming shell (81), a warming barrel (82) and a heating sheet (83), two ends of the warming shell (81) are respectively connected with ports of the purification tube (9) and the air inlet tube (4), two ends of the warming barrel (82) are connected with shaft sleeves communicated with the inside and inserted into the purification tube (9) and the air inlet tube (4), the warming barrel (82) rotates around the purification tube (9) and the air inlet tube (4), and the heating sheet (83) surrounds the inner wall of the warming shell (81) arranged outside the warming barrel (82);

the heating shell (81) is also connected with a port of the spiral pipe (711), the gas after heat exchange flows into the heating shell (81) to assist in heating, and the heating sheets (83) are electrified to heat the purified gas in the heating cylinder (82) to a specified temperature and then flow back to the furnace body B (2) through the air inlet pipe (4).

7. The furnace gas purification device with environmental protection function as defined in claim 1, wherein the purification tube (9) is internally provided with a reverse flow prevention mechanism (10), the reverse flow prevention mechanism (10) comprises a lower sealing plug (101), an upper sealing plug (102), a spring (103) and a baffle ring (104), the baffle ring (104) and the lower sealing plug (101) are fixed in the purification tube (9), one end of the inner ring spring (103) of the baffle ring (104) is connected, the other end is fixed on the surface of the upper sealing plug (102), the upper sealing plug (102) abuts against the lower sealing plug (101), and the upper sealing plug (102) and the lower sealing plug (101) are provided with staggered through holes.

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