CN213363424U

CN213363424U - Open hearth furnace flue gas waste heat recovery utilizes device

Info

Publication number: CN213363424U
Application number: CN202021975527.3U
Authority: CN
Inventors: 华燕秋; 曹务新; 侯典峰; 胡青宾
Original assignee: Shandong Dier Energy Saving Technology Co ltd
Current assignee: Shandong Dier Energy Saving Technology Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-06-04
Anticipated expiration: 2030-09-11

Abstract

The utility model discloses an open hearth furnace flue gas waste heat recovery and utilization device, which comprises a primary box body, a secondary box body and a purifying box body, wherein a primary waste heat recovery structure is arranged inside the primary box body, a secondary waste heat recovery structure is arranged inside the secondary box body, a tail gas treatment structure is arranged inside the purifying box body, the primary waste heat recovery structure comprises an inlet pipe, an arc-shaped pipeline, a water flow outlet and a water flow inlet, the secondary waste heat recovery structure comprises a straight pipeline, a rotating motor, a rotating shaft, stirring blades, a secondary water flow inlet and a bottom outlet, the device can realize the first sufficient heat conduction inside the primary box body by arranging the two-stage box body, further waste heat recovery is carried out on the flue gas by utilizing the secondary box body, and finally the flue gas can be treated and discharged, so that the efficiency of the recovery and utilization of the flue gas, the waste of heat is avoided.

Description

Open hearth furnace flue gas waste heat recovery utilizes device

Technical Field

The utility model relates to an open-hearth furnace flue gas processing apparatus specifically is an open-hearth furnace flue gas waste heat recovery utilizes device.

Background

The open-hearth furnace produces a large amount of thermal flue gases that have easily in the use, and direct emission can cause thermal waste, thereby general heat recycle utilizes the straight tube to carry out heat-conduction and realize thermal recycle, and the straight tube makes the gas velocity of flow too fast for heat conduction time is short excessively, and then makes and causes thermal a large amount of wastes.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an open hearth furnace flue gas waste heat recovery utilizes device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a device for recycling the waste heat of the flue gas of an open hearth furnace, which comprises a primary box body, a secondary box body and a purifying box body, a secondary box body is fixed on the side edge of the primary box body, the side edge of the secondary box body is connected with a purifying box body, a primary waste heat recovery structure is arranged in the primary box body, a secondary waste heat recovery structure is arranged in the secondary box body, the interior of the purifying box body is provided with a tail gas treatment structure, the primary waste heat recovery structure comprises an inlet gas pipe, an arc-shaped pipeline, a water flow outlet and a water flow inlet, an air inlet pipe is fixed at the top of the side edge of the first-stage box body, a water inlet is fixed at the top of the first-stage box body, the one-level bottom half is fixed with the rivers export, get into the trachea and connect the arc pipeline just arc pipeline fixed mounting is in inside the one-level box, evenly laid a plurality of on the arc pipeline and encircle globular siphunculus.

As a further aspect of the present invention: second grade waste heat recovery structure includes straight type pipeline, rotation motor, pivot, stirring fan blade, second grade rivers entry and bottom export, arc pipeline end connection straight type pipeline, straight type pipeline is fixed inside the second grade box, second grade box top is fixed with the rotation motor, rotate motor drive and connect the pivot, be fixed with stirring fan blade in the pivot, second grade bottom of the box side is fixed with the bottom export, second grade box top side is fixed with second grade rivers entry.

As a further aspect of the present invention: the tail gas treatment structure is including purifying water pipe, fixed screen cloth, filter screen and gas outlet, it is fixed with purifying water pipe to purify box top side, purifying water pipe with straight type pipe connection, it sets up to purify the water pipe output purify the bottom half, the inside intermediate position of purifying box is fixed with fixed screen cloth, second grade box top side is fixed with gas outlet, gas outlet's input is fixed with the filter screen.

As a further aspect of the present invention: the top of purifying box body is provided with the top apron, the articulated setting of top apron is in purifying box body top.

Compared with the prior art, the beneficial effects of the utility model are that: this device is through being provided with the two-stage box for can be at the inside abundant heat-conduction of first time that realizes of one-level box, utilize the second grade box to carry out further waste heat recovery to the flue gas, can handle the flue gas at last and discharge, make the efficiency of the recycle of flue gas waste heat higher, avoid thermal waste.

Drawings

FIG. 1 is a schematic structural diagram of an open-hearth furnace flue gas waste heat recycling device.

FIG. 2 is a schematic view of a tail gas treatment structure in the open-hearth furnace flue gas waste heat recycling device.

FIG. 3 is a schematic structural diagram of an arc-shaped pipeline in the open-hearth furnace flue gas waste heat recycling device.

In the figure: 1-first-stage box body, 2-arc pipeline, 3-water outlet, 4-straight pipeline, 5-second-stage box body, 6-bottom outlet, 7-water pump, 8-second-stage water outlet, 9-reversing valve, 10-stirring fan blade, 11-rotating shaft, 12-reversing water pipe, 13-rotating motor, 14-second-stage water inlet, 15-water inlet, 16-air inlet pipe, 17-purified water pipe, 18-purified box body, 19-fixed screen, 20-filter screen and 21-gas outlet.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Example 1

Referring to fig. 1-3, an open hearth flue gas waste heat recycling device comprises a primary box body 1, a secondary box body 5 and a purifying box body 18, wherein the secondary box body 5 is fixed on the side of the primary box body 1, the purifying box body 18 is connected with the side of the secondary box body 5, a primary waste heat recycling structure is arranged inside the primary box body 1, a secondary waste heat recycling structure is arranged inside the secondary box body 5, a tail gas treatment structure is arranged inside the purifying box body 18, the primary waste heat recycling structure comprises an inlet gas pipe 16, an arc-shaped pipeline 2, a water outlet 3 and a water inlet 15, the inlet gas pipe 16 is fixed on the top of the side of the primary box body 1, the water inlet 15 is fixed on the top of the primary box body 1, the water outlet 3 is fixed on the bottom of the primary box body 1, the inlet gas pipe 16 is connected with the arc-shaped pipeline 2, a plurality of annular through pipes are uniformly distributed on the arc-shaped pipeline 2. At first through rivers entry 15 entering raw water, get into the flue gas through getting into trachea 16 afterwards, utilize arc pipeline 2 and raw water contact, carry out heat-conduction and preheat the recovery, rivers that preheat the recovery flow out through rivers export 3, and the flue gas enters into inside the second grade box 5 through arc pipeline 2, among this, arc pipeline 2 can make the time that gas was located in 1 inside of one-level box longer, can fully carry out heat-conduction, make heat-conducting efficiency higher.

In above-mentioned flat stove flue gas waste heat recovery utilizes device, second grade waste heat recovery structure includes straight type pipeline 4, rotates motor 13, pivot 11, stirring fan blade 10, second grade rivers entry 14 and bottom export 6, 2 end connection of arc pipeline straight type pipeline 4, straight type pipeline 4 is fixed inside second grade box 5, 5 tops of second grade box are fixed with rotates motor 13, rotate motor 13 drive connection pivot 11, be fixed with stirring fan blade 10 in the pivot 11, 5 bottom sides of second grade box are fixed with bottom export 6, 5 top sides of second grade box are fixed with second grade rivers entry 14. At first rivers get into the raw water through second grade rivers entry 14, utilize afterwards to rotate motor 13 and drive pivot 11 and then drive stirring fan blade 10 and stir the inside rivers of second grade box 5, meanwhile, rivers enter into second grade box 5 through arc pipeline 2 inside, utilize to rotate motor 13 and stir rivers for rivers are heated evenly, make heat-conducting efficiency higher.

In above-mentioned flat stove flue gas waste heat recovery utilizes device, the tail gas treatment structure is including purifying water pipe 17, fixed screen 19, filter screen 20 and

gas outlet

21, 18 top sides of purifying box are fixed with purifying water pipe 17, purifying water pipe 17 with straight type pipeline 4 is connected, purifying water pipe 17 output sets up purifying box 18 bottom, 18 inside intermediate position of purifying box is fixed with fixed screen 19, 5 top sides of second grade box are fixed with gas outlet 21, gas outlet 21's input is fixed with filter screen 20. Inside the flue gas enters into water purification pipe 17, reachs purifying box 18, purifies through the inside purifying liquid of purifying box 18, and the flue gas passes through fixed screen 19 filtering solid impurity afterwards, and the filtering reachs gas outlet 21 through filter screen 20 at last and discharges, and purifying box 18 rear side is fixed with the detachable apron, can handle purifying box 18.

In the above-mentioned flat stove flue gas waste heat recovery utilizes device, the inside water circulating structure that is provided with of second grade box 5, water circulating structure includes water pump 7, second grade rivers export 8 and switching-over water pipe 12, be fixed with water pump 7 on the export 6 of bottom, water pump 7 output end is fixed with switching-over valve 9, two outputs of switching-over valve 9 are second grade rivers export 8 and switching-over water pipe 12 respectively, switching-over water pipe 12 output is connected the top of second grade box 5. In the process of heat conduction, water flows into the top of the secondary box body 5 through the reversing water pipe 12 by using the water pump 7, so that the circulation of the water flows is realized, and the temperature of the water in the secondary box body 5 is uniform.

Example 2

Compared with embodiment 1, the improvement point of the present embodiment is that: the top of the purifying box 18 is provided with a top cover plate 22, and the top cover plate 22 is hinged above the purifying box 18. Cleaning of the purge tank 18 is accomplished with a top cover plate 22.

The utility model discloses a theory of operation is: firstly, raw water enters through a water flow inlet 15, then smoke enters through an air inlet 16, the arc-shaped pipeline 2 is contacted with the raw water, heat conduction is carried out for preheating and recycling, when the preheated and recycled water flows out through a water flow outlet 3, the smoke enters into the secondary box body 5 through the arc-shaped pipeline 2, then the water flows enters into the raw water through a secondary water flow inlet 14, then a rotating motor 13 is utilized for driving a rotating shaft 11 and further driving stirring blades 10 to stir the water flow in the secondary box body 5, meanwhile, the water flows enter into the secondary box body 5 through the arc-shaped pipeline 2, the water flows are stirred through the rotating motor 13, the water flow is heated uniformly, the heat conduction efficiency is higher, finally, when the smoke enters into a purifying water pipe 17 and reaches a purifying box body 18, the purified liquid in the purifying box body 18 is purified, and then the smoke filters solid impurities through a fixed screen, finally, the gas is filtered by a filter screen 20 and reaches a gas outlet 21 to be discharged, and a detachable cover plate is fixed on the rear side of the purifying box body 18 and can treat the purifying box body 18.

The utility model has the advantages that: this device is through being provided with the two-stage box for can be at the inside abundant heat-conduction of first time that realizes of one-level box, utilize the second grade box to carry out further waste heat recovery to the flue gas, can handle the flue gas at last and discharge, make the efficiency of the recycle of flue gas waste heat higher, avoid thermal waste.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. The utility model provides an open hearth flue gas waste heat recovery utilizes device, includes one-level box (1), second grade box (5) and purifies box (18), its characterized in that, one-level box (1) side is fixed with second grade box (5), second grade box (5) side is connected and is purified box (18), the inside one-level waste heat recovery structure that is provided with of one-level box (1), the inside second grade waste heat recovery structure that is provided with of second grade box (5), it is provided with tail gas treatment structure to purify box (18) inside, one-level waste heat recovery structure includes gets into trachea (16), arc pipeline (2), rivers export (3) and rivers entry (15), one-level box (1) side top is fixed with gets into trachea (16), one-level box (1) top is fixed with rivers entry (15), one-level box (1) bottom is fixed with rivers export (3), get into trachea (16) and connect arc pipeline (2) just arc pipeline (2) fixed mounting be in inside one-level box (1), evenly laid a plurality of on arc pipeline (2) and encircle globular siphunculus.

2. The open hearth flue gas waste heat recycling device according to claim 1, wherein the secondary waste heat recycling structure comprises a straight pipeline (4), a rotating motor (13), a rotating shaft (11), stirring blades (10), a secondary water flow inlet (14) and a bottom outlet (6), the arc-shaped pipeline (2) is connected with the straight pipeline (4), the straight pipeline (4) is fixed inside the secondary box body (5), the rotating motor (13) is fixed at the top of the secondary box body (5), the rotating motor (13) is in driving connection with the rotating shaft (11), the stirring blades (10) are fixed on the rotating shaft (11), the bottom outlet (6) is fixed at the side edge of the bottom of the secondary box body (5), and the secondary water flow inlet (14) is fixed at the side edge of the top of the secondary box body (5).

3. The open hearth flue gas waste heat recycling device according to claim 2, wherein the tail gas treatment structure comprises a water purification pipe (17), a fixed screen (19), a filter screen (20) and a gas outlet (21), the water purification pipe (17) is fixed on the top side of the purification box (18), the water purification pipe (17) is connected with the straight pipeline (4), the output end of the water purification pipe (17) is arranged at the bottom of the purification box (18), the fixed screen (19) is fixed in the middle of the inside of the purification box (18), the gas outlet (21) is fixed on the top side of the secondary box (5), and the filter screen (20) is fixed on the input end of the gas outlet (21).

4. The open hearth furnace flue gas waste heat recycling device according to claim 3, characterized in that a water circulation structure is arranged inside the secondary box body (5), the water circulation structure comprises a water pump (7), a secondary water outlet (8) and a reversing water pipe (12), the water pump (7) is fixed on the bottom outlet (6), a reversing valve (9) is fixed at the output end of the water pump (7), the two output ends of the reversing valve (9) are the secondary water outlet (8) and the reversing water pipe (12), and the output end of the reversing water pipe (12) is connected with the top of the secondary box body (5).

5. The open hearth flue gas waste heat recycling device according to claim 4, characterized in that a top cover plate (22) is arranged on the top of the purifying box body (18), and the top cover plate (22) is hinged above the purifying box body (18).