CN211600757U

CN211600757U - Energy-saving environment-friendly waste heat recovery device

Info

Publication number: CN211600757U
Application number: CN201922127041.8U
Authority: CN
Inventors: 闫朝吉; 宋礼洋; 高子宇; 任永斌
Original assignee: Shandong Province Water Conservancy Bureau Co ltd
Current assignee: Shandong Province Water Conservancy Bureau Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-09-29
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses an energy-saving and environment-friendly waste heat recovery device, which comprises a furnace body, a first box body, a water tank and a second box body, wherein an air outlet pipe is connected above the furnace body, and a heat exchange coil pipe is arranged in the first box body; a main pipe is vertically arranged in the second box body, a plurality of air injection branch pipes are arranged on the side wall of the main pipe, and a sealing cover is arranged at the bottom of the main pipe; the upper end part of the second box body is also provided with an exhaust port and a water outlet. The energy-saving environment-friendly waste heat recovery device carries out primary heat exchange on high-temperature waste gas through the heat exchange coil pipe, and hot water after heat exchange and temperature rise is introduced into the furnace body for secondary heating, so that compared with the mode that the furnace body directly heats cold water, the energy consumption is greatly reduced; waste gas after preliminary heat transfer is spouted into the cooling water through the jet-propelled branch pipe, makes waste gas reposition of redundant personnel and with the cooling water intensive mixing, absorbs the heat more abundant, and heat exchange efficiency is higher, can adsorb a large amount of impurity dusts in the waste gas simultaneously, makes waste gas obtain purifying, is favorable to environmental protection.

Description

Energy-saving environment-friendly waste heat recovery device

Technical Field

The utility model relates to a waste heat recovery technical field specifically is an energy-concerving and environment-protective waste heat recovery device.

Background

In recent years, in order to reduce pollution of flue gas generated by a gas boiler to urban atmosphere and recover a large amount of heat contained in the flue gas as much as possible, a large number of waste heat recovery devices of the gas boiler should be allowed to be generated.

The existing common waste heat recovery device has low heat recovery efficiency, the temperature of the waste gas after heat recovery still exceeds 60-80 ℃, and the waste gas still contains a large amount of heat, and is generally and directly discharged, so that the waste is very high, and a large amount of impurity dust contained in the waste gas also seriously pollutes the environment, and the waste gas does not meet the requirements of energy conservation and environmental protection vigorously advocated by the nation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an energy-concerving and environment-protective waste heat recovery device 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:

an energy-saving and environment-friendly waste heat recovery device comprises a furnace body, a first box body, a water tank and a second box body, wherein an air outlet pipe is connected above the furnace body, a heat exchange coil is arranged in the first box body, the air inlet end of the heat exchange coil is connected with the air outlet pipe, and the air outlet end of the heat exchange coil is communicated with a connecting pipe; a water return pipe which is led into the furnace body is arranged at the bottom of the first box body, and a first water inlet pipe is connected between the water tank and the first box body; a second water inlet pipe is communicated between the side wall below the second box body and the water tank, a water pump is mounted on the second water inlet pipe, a main pipe is vertically arranged in the second box body and communicated with the connecting pipe, a plurality of air injection branch pipes are arranged on the side wall of the main pipe, and a sealing cover is arranged at the bottom of the main pipe; the upper end part of the second box body is also provided with an exhaust port and a water outlet.

As a further aspect of the present invention: the air injection branch pipe comprises a pipe body and air injection balloons, wherein the pipe body is provided with a plurality of air injection balloons, and the air injection balloons are provided with a plurality of air injection holes.

As a further aspect of the present invention: and a drying layer is also arranged in the exhaust port.

As a further aspect of the present invention: and a filter is arranged on the water outlet.

As a further aspect of the present invention: the tail end of the drain pipe is connected with a mounting flange.

As a further aspect of the present invention: the bottom of the second box body is provided with a dust collecting groove, the bottom of the prime dust collecting groove is provided with a dust exhaust port, and the dust exhaust port is provided with a valve.

Compared with the prior art, the beneficial effects of the utility model are that:

the energy-saving environment-friendly waste heat recovery device carries out primary heat exchange on high-temperature waste gas through the heat exchange coil pipe, and hot water after heat exchange and temperature rise is introduced into the furnace body for secondary heating, so that compared with the mode that the furnace body directly heats cold water, the energy consumption is greatly reduced; waste gas after preliminary heat transfer is spouted into the cooling water through the jet-propelled branch pipe, makes waste gas reposition of redundant personnel and with the cooling water intensive mixing, absorbs the heat more abundant, and heat exchange efficiency is higher, can adsorb a large amount of impurity dusts in the waste gas simultaneously, makes waste gas obtain purifying, is favorable to environmental protection.

Drawings

FIG. 1 is a schematic structural view of an energy-saving and environment-friendly waste heat recovery device;

fig. 2 is a schematic structural diagram of an air injection branch pipe in the energy-saving and environment-friendly waste heat recovery device.

In the figure: 1-furnace body, 2-air outlet pipe, 3-first box body, 4-heat exchange coil pipe, 5-water tank, 6-first water inlet pipe, 7-water return pipe, 8-second box body, 9-main pipe, 10-air injection branch pipe, 101-pipe body, 102-air injection ball, 103-air injection hole, 11-air outlet, 12-drying layer, 13-second water inlet pipe, 14-water pump, 15-dust collection tank, 16-dust exhaust pipe, 17-valve, 18-water discharge pipe, 19-filter, 20-mounting flange, 21-connecting pipe and 22-sealing cover.

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, an energy-saving and environment-friendly waste heat recovery device comprises a furnace body 1, a first box body 3, a water tank 5 and a second box body 8, wherein an air outlet pipe 2 is connected above the furnace body 1, a heat exchange coil 4 is arranged in the first box body 3, the air inlet end of the heat exchange coil 4 is connected with the air outlet pipe 2, and the air outlet end of the heat exchange coil 4 is communicated with a connecting pipe 21; a water return pipe 7 which is led into the furnace body 1 is arranged at the bottom of the first box body 3, and a first water inlet pipe 6 is connected between the water tank 5 and the first box body 3; a second water inlet pipe 13 is communicated between the side wall below the second box body 8 and the water tank 5, a water pump 14 is installed on the second water inlet pipe 13, a main pipe 9 is vertically arranged in the second box body 8, the main pipe 9 is communicated with a connecting pipe 21, a plurality of air injection branch pipes 10 are arranged on the side wall of the main pipe 9, and a sealing cover 22 is arranged at the bottom of the main pipe 9; the upper end part of the second box body 8 is also provided with an exhaust port 11 and a drain pipe 18;

referring to fig. 2, a specific form of the gas branch pipe 10 is not limited, in this embodiment, preferably, the gas branch pipe 10 includes a pipe body 101 and a gas injection ball 102, the pipe body 101 is provided with a plurality of gas injection balls 102, and the gas injection balls 102 are provided with a plurality of gas injection holes 103;

specifically, the exhaust gas in the main pipe 9 is ejected from the gas ejecting holes 103 of each gas ejecting branch pipe 10, so that the exhaust gas is maximally branched and is fully contacted with the water in the second water tank 8 for heat exchange;

a drying layer 12 is also arranged in the exhaust port 11 and is used for absorbing moisture in the gas floating upwards from the second water tank 8;

the drain pipe 18 is provided with a filter 19 to prevent the drain pipe 18 from being blocked by impurities adsorbed in water;

the end of the drain pipe 18 is connected with a mounting flange 20, which facilitates the butt joint of pipelines, so that the water absorbing heat in the second water tank 8 can be reused.

The working principle of the embodiment is as follows:

firstly, a large amount of high-temperature waste gas generated in the furnace body 1 enters the heat exchange coil 4 from the gas outlet pipe 2, the water tank 5 injects cooling water into the first box body 3 through the first water inlet pipe 6, the waste gas in the heat exchange coil 4 and the cooling water exchange heat sufficiently to heat cold water, and the water after primary heating enters the furnace body 1 from the water return pipe 7 to be heated and utilized again; the water tank 5 is through second inlet tube 13 simultaneously through the cooling water of 14 income of water pump in to second box 8, waste gas through preliminary heat transfer flows out from heat transfer coil 4, and in the person in charge 9 in entering second box 8 through connecting pipe 21, spout in each fumarole 103 of jet-propelled branch 10 again, with the cooling water intensive mixing in the second box 8, on the one hand, the heat in the waste gas is absorbed again, on the other hand adsorbs a large amount of impurity dust in the waste gas, the waste gas after abundant heat transfer dust removal is discharged in the gas vent 11 of second box 8 top after absorbing moisture through dry layer 12, the water after absorbing the heat in the second box 8 is discharged after the edulcoration of drain pipe 18 process filter 19 and is supplied follow-up equipment reuse simultaneously.

Example 2

Because the waste gas contains a large amount of impurity and dust, after the cooling water in the second box body 8 is fully purified, the impurities in the water of the second box body 8 can be accumulated, and in order not to influence the heat exchange performance, the water needs to be cleaned regularly, therefore, the embodiment is further improved on the basis of the embodiment 1, and the improvement part is as follows: the bottom of the second box body 8 is provided with a dust collecting groove 15, the bottom of the prime number dust collecting groove 15 is provided with a dust exhaust pipe 16, and the dust exhaust pipe 16 is provided with a valve 17; the impurities in the second box body 8 are deposited in the dust collecting groove 15, and when the impurities in the dust collecting groove 15 are accumulated to a certain degree, the valve 17 is opened to discharge the impurities from the dust discharging pipe 16.

The energy-saving environment-friendly waste heat recovery device carries out primary heat exchange on high-temperature waste gas through the heat exchange coil 4, and hot water after heat exchange and temperature rise is introduced into the furnace body 1 for secondary heating, so that compared with the mode that the furnace body directly heats cold water, the energy consumption is greatly reduced; waste gas after preliminary heat transfer spouts into the cooling water through jet-propelled branch pipe 10, makes waste gas reposition of redundant personnel and with the cooling water intensive mixing, absorbs the heat more abundant, and heat exchange efficiency is higher, can adsorb a large amount of impurity dusts in the waste gas simultaneously, makes waste gas obtain purifying, is favorable to environmental protection.

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. An energy-saving and environment-friendly waste heat recovery device comprises a furnace body (1), a first box body (3), a water tank (5) and a second box body (8), and is characterized in that an air outlet pipe (2) is connected above the furnace body (1), a heat exchange coil (4) is arranged in the first box body (3), the air inlet end of the heat exchange coil (4) is connected with the air outlet pipe (2), and the air outlet end of the heat exchange coil is communicated with a connecting pipe (21); a water return pipe (7) which is led into the furnace body (1) is arranged at the bottom of the first box body (3), and a first water inlet pipe (6) is connected between the water tank (5) and the first box body (3); a second water inlet pipe (13) is communicated between the side wall below the second box body (8) and the water tank (5), a water pump (14) is installed on the second water inlet pipe (13), a main pipe (9) is vertically arranged in the second box body (8), the main pipe (9) is communicated with a connecting pipe (21), a plurality of air injection branch pipes (10) are arranged on the side wall of the main pipe (9), and a sealing cover (22) is arranged at the bottom of the main pipe (9); the upper end part of the second box body (8) is also provided with an exhaust port (11) and a drain pipe (18).

2. The energy-saving and environment-friendly waste heat recovery device according to claim 1, wherein the gas injection branch pipe (10) comprises a pipe body (101) and gas injection balls (102), a plurality of gas injection balls (102) are arranged on the pipe body (101), and a plurality of gas injection holes (103) are formed in the gas injection balls (102).

3. The energy-saving and environment-friendly waste heat recovery device according to claim 2, characterized in that a drying layer (12) is further arranged in the exhaust port (11).

4. Energy-saving and environment-friendly waste heat recovery device according to claim 2, characterized in that the drain pipe (18) is provided with a filter (19).

5. The energy-saving environment-friendly waste heat recovery device as recited in claim 4, characterized in that the end of the drain pipe (18) is connected with a mounting flange (20).

6. The energy-saving environment-friendly waste heat recovery device according to any one of claims 1 to 5, wherein a dust collecting groove (15) is formed at the bottom of the second box body (8), a dust exhaust pipe (16) is formed at the bottom of the prime dust collecting groove (15), and a valve (17) is installed on the dust exhaust pipe (16).