CN214513409U

CN214513409U - Diesel engine exhaust treatment device for factory building

Info

Publication number: CN214513409U
Application number: CN202023152793.9U
Authority: CN
Inventors: 李东风; 王相武; 张雨; 崔开; 陈连静; 王奇; 唐清宇; 高静
Original assignee: Xin Barag Right Banner Rongda Mining Co ltd
Current assignee: Xin Barag Right Banner Rongda Mining Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-10-29
Anticipated expiration: 2030-12-24

Abstract

The utility model relates to a diesel engine waste gas treatment device for a factory building, which belongs to the technical field of waste gas treatment; the waste gas treatment device of the diesel engine for the factory building comprises an air inlet pipe, a negative pressure fan, a filtering device, a nitrogen removal device and a sulfur removal device, wherein the air inlet pipe is arranged above an exhaust port of the diesel engine; the utility model discloses a make the absorptive waste gas of intake pipe loop through filter equipment, sulphur removal device, nitrogen removal device and filter, sulphur removal, nitrogen removal and handle, filter, clear away smoke and dust granule, oxynitride, sulphide in the waste gas, finally discharge to the harmless gas of human body, simple structure, installation maintenance facility, use cost hang down, to the purifying effect of waste gas good.

Description

Diesel engine exhaust treatment device for factory building

Technical Field

The utility model relates to a diesel engine exhaust treatment device for factory building belongs to exhaust-gas treatment technical field.

Background

In a production factory building of a mining area, more production equipment is often needed, wherein some equipment is powered by a diesel engine, a large amount of waste gas is generated in the working process of the diesel engine, the waste gas mainly comprises harmful substances such as oxynitride, sulfide and a large amount of smoke dust particles (certain heavy metal compounds, lead compounds, oil mist and the like), and the pollutants are easily caused to lung inflammation, respiratory system diseases and the like after being inhaled by a human body for a long time.

Because mining area factory building area is big, the equipment is many, is difficult to carry out unified collection, emission to the waste gas that the diesel engine produced, therefore mining area factory building all adopts the processing method of directly discharging the waste gas that the diesel engine produced inside the factory building at present, and this just exists when the factory building ventilation is not smooth, and waste gas is a large amount of and fills in the factory building, not only influences production, still will threaten the healthy of staff in the factory building seriously.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problem that exists among the background art, the utility model provides a diesel engine exhaust treatment device for factory building, the utility model discloses a make the absorptive waste gas of intake pipe loop through filter equipment, desulphurization unit, denitrogenation device and filter, the sulphur removal, denitrogenation is handled, filters smoke and dust granule, oxynitride, sulphide in the waste gas, clears away, finally discharges the harmless gas to the human body, simple structure, installation maintenance facility, use cost low, good to the purifying effect of waste gas.

In order to solve the above problem, the utility model discloses a following technical scheme realizes:

the diesel engine waste gas treatment device for the factory building comprises an air inlet pipe, a negative pressure fan, a filtering device, a nitrogen removal device and a sulfur removal device, wherein the air inlet pipe is arranged above an air outlet of the diesel engine, the negative pressure fan is arranged inside the air inlet pipe, the air inlet pipe is communicated with an air inlet of the filtering device, an air outlet of the filtering device is communicated with an air inlet of the nitrogen removal device, an air outlet of the nitrogen removal device is communicated with an air inlet of the sulfur removal device, and an exhaust pipe is connected to an air outlet of the sulfur removal device.

Preferably, in the filtering device, filter cotton used for separating an air inlet and an air outlet of the box body is arranged in the box body through a mounting frame, and the air inlet is connected with an air conveying pipe used for conveying waste gas to the inner bottom of the box body.

Preferably, the air inlet of the nitrogen removal device is communicated with the air outlet of the filtering device through an air conveying pipe, the air outlet is communicated with the air inlet of the sulfur removal device through an air conveying pipe, and a nitrogen oxide adsorbent is added in the nitrogen removal device.

Preferably, the air inlet of the sulfur removal device is communicated with the air outlet of the nitrogen removal device through an air delivery pipe, the air outlet is connected with an exhaust pipe, and a desulfurizer is added in the sulfur removal device.

The utility model has the advantages that:

the utility model discloses a make the absorptive waste gas of intake pipe loop through filter equipment, sulphur removal device, nitrogen removal device and filter, sulphur removal, nitrogen removal and handle, filter, clear away smoke and dust granule, oxynitride, sulphide in the waste gas, finally discharge to the harmless gas of human body, simple structure, installation maintenance facility, use cost hang down, to the purifying effect of waste gas good.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Description of reference numerals: 1-air inlet pipe, 2-negative pressure fan, 3-filtering device, 4-denitriding device, 5-desulfurizing device, 6-exhaust pipe, 7-box, 8-mounting rack, 9-filter cotton, 10-air delivery pipe, 11-nitrogen oxide adsorbent and 12-desulfurizer.

Detailed Description

In order to make the objects, technical solutions, objectives and effects of the present invention obvious and understandable, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the skilled person can understand the preferred embodiments.

It should be noted that, in the description of the present invention, unless explicitly specified or limited, the terms "mounted," "connected," and the like are to be understood in a broad sense, and may be either fixed or detachable; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate.

The utility model discloses in, as shown in fig. 1, intake pipe 1 sets up in diesel engine gas vent top, and 1 internally mounted of intake pipe has negative-pressure air fan 2, and intake pipe 1 is linked together with filter equipment 3's air inlet, and filter equipment 3's gas outlet is linked together with nitrogen removal device 4's air inlet, and nitrogen removal device 4's gas outlet is linked together with sulfur removal device 5's air inlet, is connected with blast pipe 6 on sulfur removal device 5's the gas outlet. An air inlet pipe 1 is arranged above an air outlet of a diesel engine, a negative pressure fan 2 is arranged in the air inlet pipe 1, the negative pressure fan 2 rotates to form a negative pressure area in the air inlet pipe 1, waste gas discharged by the diesel engine is absorbed into the air inlet pipe 1 under the action of atmospheric pressure, the air inlet pipe 1 is communicated with the inner bottom of a filtering device 3 through an air conveying pipe 10, and the absorbed waste gas enters the filtering device 3 through the air conveying pipe 10; the gas outlet of the filtering device 3 is communicated with the gas inlet of the nitrogen removal device 4, the gas outlet of the nitrogen removal device 4 is communicated with the gas inlet of the sulfur removal device 5, waste gas to be treated sequentially passes through the filtering device 3, the nitrogen removal device 4 and the sulfur removal device 5, and the treated waste gas is finally discharged into a workshop through the exhaust pipe 6 connected to the gas outlet of the sulfur removal device 5.

The utility model discloses in, as shown in fig. 1, among the filter equipment 3 the box is inside to be provided with the filter pulp 9 that is used for cutting off box 7 air inlet and gas outlet through mounting bracket 8, is connected with on the air inlet to be used for carrying the gas-supply pipe 10 of bottom in the box 7 with waste gas. A mounting frame 8 with a cubic structure is arranged in the box body 7, filter cotton 9 is fixed on 4 side surfaces and the top of the mounting frame 8, the air inlet pipe 1 continuously absorbs exhaust gas discharged by the diesel engine, the exhaust gas is conveyed to the bottom of the filter device 3 from an air inlet of the filter device 3 through an air conveying pipe 10 and finally enters an inner cavity formed by the filter cotton 9, due to the rising action of the gas, the exhaust gas penetrates through the filter cotton 9 and reaches an outer cavity between the box body 7 and the filter cotton 9, in the process, a large amount of smoke dust particles such as certain heavy metal compounds, lead compounds, dust, oil mist and the like in the exhaust gas can be filtered in the inner cavity by the filter cotton 9, while the gas without the smoke dust particles enters the outer cavity between the box body 7 and the filter cotton 9 through the filter cotton 9 and then enters the nitrogen removal device 4 from the outlet of the box body 7 through the air conveying pipe 10, in the specific implementation, the filter cotton 9 and the particulate matters need to be replaced regularly, in order to guarantee the validity of the filtering device 3 for filtering the waste gas, the filtering area is increased by adopting the mode of installing the filter cotton 9 on the mounting frame 8 with a cubic structure, the service life of the filter cotton 9 can be effectively prolonged, the replacement times are reduced, and the maintenance cost is reduced.

The utility model discloses in, as shown in fig. 1, the air inlet of denitrogenation device 4 is linked together through gas-supply pipe 10 and filter equipment 3's gas outlet, and the gas outlet is linked together through gas-supply pipe 10 and desulphurization unit 5's air inlet, and adds nitrogen oxide adsorbent 11 in the denitrogenation device 4. Although a large amount of smoke particles are removed after the exhaust gas discharged from the diesel engine is filtered by the filtering device 3, the exhaust gas still contains a large amount of nitrogen oxides such as NO, NO2 and the like, and when the exhaust gas is directly discharged into a factory with poor ventilation, adverse reactions such as dizziness and nausea can be caused, so that the health of a human body is endangered, and therefore the filtered exhaust gas needs to be subjected to further nitrogen removal treatment. The air inlet of the nitrogen removal device 4 is communicated with the air outlet of the filtering device 3 through the air conveying pipe 10, the air outlet is communicated with the air inlet of the sulfur removal device 5 through the air conveying pipe 10, and the filtered waste gas enters the nitrogen removal device 4 from the air inlet through the air conveying pipe 10 to react with the nitrogen oxide adsorbent 11, so that nitrogen oxides such as NO, NO2 and the like in the waste gas are converted into N2 harmless to a human body, and the aim of removing nitrogen is fulfilled. The nitrogen oxide adsorbent 11 may be a material having nitrogen oxide adsorbing performance, such as an activated carbon adsorbent, a metal organic framework adsorbent, a zeolite molecular sieve adsorbent, etc., and the exhaust gas discharged from the diesel engine reacts with the nitrogen oxide adsorbent 11 to remove NO and NO2 in the exhaust gas and discharge the exhaust gas as N2, and then the exhaust gas enters the sulfur removal device 5 from the gas outlet through the gas pipe 10.

The utility model discloses in, as shown in fig. 1, the air inlet of desulphurization unit 5 is linked together through the gas-supply pipe 10 and the gas outlet of denitrogenation device 4, is connected with blast pipe 6 on the gas outlet, and adds desulfurizer 12 in the desulphurization unit 5. After the nitrogen is removed from the exhaust gas discharged from the diesel engine, nitrogen oxides such as NO, NO2 and the like in the exhaust gas are almost completely removed, but a certain amount of SO2 still exists, and if the exhaust gas without sulfur removal is discharged into a factory, workers in the factory easily cause respiratory diseases such as chronic bronchitis, emphysema and the like after inhaling SO2 for a long time, the incidence rate of lung cancer is increased, and the risk of breast cancer and colorectal cancer is increased and the cardiovascular system is damaged when the SO2 enters the body, SO sulfur removal treatment is needed after the nitrogen removal of the exhaust gas. The air inlet of the sulfur removal device 5 is communicated with the air outlet of the nitrogen removal device 4 through the air delivery pipe 10, the waste gas after nitrogen removal enters the sulfur removal device 5 from the air inlet through the air delivery pipe 10 and reacts with a desulfurizer 12 placed in the sulfur removal device 5, the desulfurizer 12 can be humidified quick lime (CaO), slaked lime (Ca (OH) 2) or other solid substances capable of reacting with SO2, SO2 in the waste gas is converted into CaSO4, the purpose of removing SO2 in the waste gas is achieved, and the waste gas after sulfur removal is directly discharged into a factory building from the air outlet through the exhaust pipe 6.

The utility model discloses a working process:

the exhaust gas discharged by the diesel engine is in the air inlet pipe due to the negative pressure fan 2Negative pressure is generated in the box body 1 and absorbed by the air inlet pipe 1, then the negative pressure enters the inner bottom of the filtering device 3 through the air conveying pipe 10, the negative pressure is gradually filled in a cavity formed by the filter cotton 9 due to self lifting force, then the waste gas penetrates through the filter cotton 9, substances such as dust, oil mist, smoke dust particles and the like in the waste gas are filtered in the cavity by the filter cotton 9, and the gas without the smoke dust particles penetrates through the filter cotton 9 and enters an outer cavity between the box body 7 and the filter cotton 9, so that the filtering is finished; the filtered waste gas enters the nitrogen removal device 4 from the gas transmission pipe 10, and NO in the waste gas₂Etc. react with nitrogen oxide adsorbent 11 to produce harmless N₂The nitrogen removal is completed; the waste gas after nitrogen removal enters the sulfur removal device 5 from the gas transmission pipe 10, and SO in the waste gas₂Reacting with desulfurizing agent 12 to react SO₂Conversion to CaSO₄The desulfurization is completed, and the desulfurized waste gas is directly discharged into the plant through the exhaust pipe 6. The exhaust gas discharged by the diesel engine is finally filtered, denitrified and desulfurized to become clean gas without harmful substances, and can be directly discharged into a factory building from the exhaust pipe 6.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a diesel engine exhaust treatment device for factory building which characterized in that: diesel engine exhaust treatment device for factory building includes intake pipe (1), negative-pressure air fan (2), filter equipment (3), nitrogen removal device (4), sulphur removal device (5), intake pipe (1) sets up in diesel engine gas vent top, and intake pipe (1) internally mounted has negative-pressure air fan (2), and intake pipe (1) is linked together with the air inlet of filter equipment (3), and the gas outlet of filter equipment (3) is linked together with the air inlet of nitrogen removal device (4), and the gas outlet of nitrogen removal device (4) is linked together with the air inlet of sulphur removal device (5), is connected with blast pipe (6) on the gas outlet of sulphur removal device (5).

2. The diesel engine exhaust treatment device for the factory building according to claim 1, characterized in that: filter equipment (3) include box (7), mounting bracket (8), cross filter pulp (9), the box is inside to be provided with through mounting bracket (8) and is used for cutting off filter pulp (9) of box (7) air inlet and gas outlet, is connected with on the air inlet to be used for carrying gas-supply pipe (10) to the bottom in box (7) with waste gas.

3. The diesel engine exhaust treatment device for the factory building according to claim 1, characterized in that: the air inlet of the nitrogen removal device (4) is communicated with the air outlet of the filtering device (3) through an air delivery pipe (10), the air outlet is communicated with the air inlet of the sulfur removal device (5) through the air delivery pipe (10), and a nitrogen oxide adsorbent (11) is added into the nitrogen removal device (4).

4. The diesel engine exhaust treatment device for the factory building according to claim 1, characterized in that: the air inlet of the sulfur removal device (5) is communicated with the air outlet of the nitrogen removal device (4) through an air conveying pipe (10), the air outlet is connected with an exhaust pipe (6), and a desulfurizer (12) is added in the sulfur removal device (5).