KR20170002302U - NOx reduction system - Google Patents

Abstract

The present invention relates to a nitrogen oxide reduction system. In the present invention, a container type (or a square box type) nitrogen oxide reduction box is installed / installed on an upper part of an integrated power generation device equipped with an engine for power generation, (For example, an SCR reactor, a reducing agent injection unit, a reducing agent supply unit, a reducing agent storage tank, etc.) for purifying the exhaust gas discharged from the engine for power generation inside or outside the nitrogen oxide reduction box, (NO _x ) emitted from the power generation engine is effectively reduced / purified without difficulty on the side of the power generation operating entity by effectively taking out the nitrogen oxides (NO _x ) In certain areas where emissions are strictly forbidden, guidance is provided to allow for flexible adoption / operation of integrated integrated generation.

Description

[0001] The present invention relates to a NOx reduction system,

The present invention relates to a nitrogen oxide reduction system, and more particularly, to a nitrogen oxide reduction system having a container type (or a square box type) nitrogen oxide reduction box mounted and movable on an integrated power generation device equipped with an engine for power generation, (For example, an SCR reactor, a reducing agent injection unit, a reducing agent supply unit, a reducing agent storage tank, etc.) for purifying the exhaust gas discharged from the engine for power generation inside or outside the nitrogen oxide reduction box (NO _x ) emitted from the power generation engine can be effectively reduced or purified without difficulty on the side of the power generation operating entity by effectively taking out the nitrogen oxide (NO _x ) The quality that can guide the adoption / operation of the integrated integrated power generation equipment in a flexible manner in a specific area where the discharge of the integrated power generation equipment is strictly prohibited It relates to an oxide reduction system.

2. Description of the Related Art [0002] In recent years, an integrated power generation device has been newly developed / spread, which is a container standard for power generation engines and dramatically improved moving and installation. For example, a domestic integrated utility model 20-377911 (name: integrated integrated power generation device) (published on March 14, 2005) discloses an example of the integrated integrated power generation device according to this conventional technology in more detail.

On the other hand, the regulations on nitrogen oxides (NO _x ) emitted from engines in countries around the world have been strengthened recently (Tier III, which will enter into force in 2016, will regulate NOx emissions to 2.3g / KW or less) , Selective catalytic reduction (SCR), and the like are widely developed / distributed.

For example, Korean Patent Laid-Open No. 10-2010-132310 (titled SCR system for ship using urea powder and nitrogen oxide reduction method) (Published Dec. 17, 2010), Korean Patent Laid-Open No. 10-2003-127737 Title: Apparatus for preventing clogging of SCR apparatus using waste heat of ship) Korean Patent Laid-Open No. 10-2014-46651 (Name: Degeneration apparatus of large-sized engines for ships) (2014.4.21. ) Discloses in more detail the detailed structure of a ship's nitrogen oxide reduction apparatus according to such conventional techniques.

As described above, since the regulations on nitrogen oxide (NO _x ) discharged from an engine or the like are further strengthened under such a conventional system as described above, nitrogen oxide (NO) discharged from an integrated- _x ) also have a basic need to be purified / discharged through a series of abatement procedures (purification procedures).

However, in spite of the situation yireoham and, unlike the conventional vessel, one-piece integrated power generation device (NO _x) separate the nitrogen oxides that can reduce / purify the nitrogen oxide (NO _x) discharged from the power generation engine reduction / purification Despite the various advantages of the integrated power generation system, the power plant operator has not been able to use the integrated power plant in a specific area where the emission of nitrogen oxides (NO _x ) is strictly forbidden, The power generation device can not be operated at all.

Korean Registered Utility Model No. 20-377911 (Title: Integrated Integrated Power Generator) Korean Patent Laid-Open No. 10-2010-132310 (name: SCR system for ship using urea powder and nitrogen oxides abatement method) (Dec. 17, 2010) Korean Patent Laid-Open No. 10-2003-127737 (Name: Apparatus for preventing clogging of SCR apparatus using waste heat of a ship) Korean Patent Laid-Open No. 10-2014-46651 (Name: Denitration Apparatus for Large Marine Engines) (Published on April 21, 2014)

Accordingly, the object of the present invention is to provide a method of installing / installing a container type (or a square box type) nitrogen oxide reduction box which is easy to install and move on an integrated power generation device equipped with an engine for power generation, Arranging various components (such as an SCR reactor, a reducing agent injection unit, a reducing agent supply unit, a reducing agent storage tank, etc.) for purifying the exhaust gas discharged from the engine for power generation inside or outside the oxide reduction box (NO _x ) from the power generation engine is effectively prevented and purified while the power generation operating body side is capable of effectively reducing / purifying nitrogen oxides (NO _x ) , It is guided to flexibly adopt and operate the integrated integrated power generation device.

Other objects of the present invention will become more apparent from the following detailed description and the accompanying drawings.

In order to achieve the above object, the present invention provides a container type or square box type nitrogen oxide reduction box mounted on an integrated electric power generating apparatus equipped with an engine for power generation; An exhaust gas distribution line installed inside the nitrogen oxide reduction box and connected to an exhaust gas exhaust line drawn out from the power generation engine; A reducing agent injection unit installed in the nitrogen oxide reduction box and connected to the exhaust gas circulation line to inject a reducing agent toward the exhaust gas circulation line; (NO _x ) contained in the exhaust gas, the exhaust gas being exhausted from the power generation engine and the reducing agent, together with the exhaust gas circulation line, installed inside the nitrogen oxide reduction box, And a selective catalytic reduction (SCR) reactor for purifying nitrogen and water vapor.

According to another aspect of the present invention, there is also provided a container type nitrogen oxide reduction box, each of which is mounted on an upper portion of each of the integrated power generation apparatuses equipped with the power generation engine; An exhaust gas distribution line installed inside each nitrogen oxide reduction box and connected to an exhaust gas exhaust line drawn out from the power generation engine; A reducing agent injection unit installed in each of the nitrogen oxide reduction boxes and connected to the exhaust gas distribution line to inject a reducing agent toward the exhaust gas distribution line; (NO _x ) contained in the exhaust gas, the exhaust gas being exhausted from the power generation engine and the reducing agent, together with the exhaust gas circulation line, A selective catalytic reduction (SCR) reactor for purifying nitrogen and water vapor; A reducing agent storage tank installed outside the nitrogen oxide reduction box and storing a reducing agent; And a reducing agent supply unit provided outside the nitrogen oxide reduction box and connected to the reducing agent storage tank to jointly supply the reducing agent stored in the reducing agent storage tank to a reducing agent injection unit installed in each nitrogen oxide reduction box And a nitrogen oxide reduction system.

In the present invention, a container type (or a square box type) nitrogen oxide reduction box is installed on the upper part of the integrated electric power generation device equipped with the engine for power generation, which is easy to install and move, Arranging various components (for example, an SCR reactor, a reducing agent injection unit, a reducing agent supply unit, a reducing agent storage tank, etc.) for purifying the exhaust gas discharged from the power generation engine on the outside, In a specific area where emission of nitrogen oxides (NO _x ) is strictly forbidden, while effectively suppressing / purifying nitrogen oxides (NO _x ) discharged from a power generation engine without difficulty, The integrated integrated power generation device can be flexibly adopted / operated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary diagram conceptually showing a nitrogen oxide reduction system according to an embodiment of the present invention; FIG.
FIG. 2 is an exemplary view conceptually showing a nitrogen oxide reduction system according to another embodiment of the present invention; FIG.

Hereinafter, the nitrogen oxide reduction system according to the present invention will be described in more detail with reference to the accompanying drawings.

1, the nitrogen oxide reduction system 100 according to the present invention includes a container type (or square box type) nitrogen oxide reduction box 20 mounted on / installed on an integrated power generation apparatus 10, An SCR reactor 39 for purifying the exhaust gas discharged from the power generation engine 13 in the integrated power generation apparatus 10 in the state of being installed inside or outside the nitrogen oxide reduction box 20, A reducing agent supply unit 34, a reducing agent storage tank 32, a nitrogen oxide reduction process controller 31, and the like are systematically combined.

In this case, the integrated power generation device control panel 11, the generator 12, the power generation engine 13, the exhaust gas silencer 14, the ventilation air exhaust fan 14, Various components such as an air exhaust line 15, a ventilation air exhaust line 16, a radiator 17, and an exhaust gas exhaust line 18 are widely arranged.

Here, the exhaust gas silencer 14, the radiator 17 and the like form a structure to be installed on the top of the nitrogen oxide reduction box 20. Under this situation, on the exhaust gas silencer 14 side, the nitrogen oxide reduction box 20 (That is, the exhaust gas from which the nitrogen oxide discharged from the nitrogen oxide reduction box 20 is removed), and discharges the exhaust gas to the outside.

At this time, the nitrogen oxide reduction box 20 constituting the nitrogen oxide reduction system 100 of the present invention forms a container type (or a rectangular box type) structure so as to be easily installed on the integrated power generation apparatus 10 The SCR reactor 39, the exhaust gas distribution line 36, the reducing agent injection unit 35, the reducing agent supply unit 34, the reducing agent storage tank 32, the nitrogen oxide reduction process controller 31, And to provide a series of accommodation spaces.

The exhaust gas distribution line 36 disposed inside the nitrogen oxide reduction box 20 has a structure connected to the exhaust gas exhaust line 18 on the integrated power generation apparatus and a structure connected to the SCR reactor 39 When the exhaust gas on the side of the power generation engine 13 containing nitrogen oxides is exhausted, the exhaust gas is moved to direct the exhaust gas to the SCR reactor 39 side.

Under the circumstances, the SCR reactor 39 disposed inside the nitrogen oxide reduction box 20 is connected to the exhaust gas exhaust line 18 via the exhaust gas distribution line 36, (For example, nitrogen oxides (NO _x )) contained in the exhaust gas by passing the exhaust gas from the exhaust gas passage 13 and the reducing agent (for example, urea) together.

In this case, the SCR reactor 39 reacts the nitrogen oxide (NO _x ) with the reducing agent while mixing the exhaust gas with the reducing agent at the same time, and reduces the nitrogen oxide (NO _x ) into nitrogen and water vapor harmless to the organism And an SCR chamber 37 containing the SCR catalyst 38 are structured in a systematic combination.

For example, zeolite, vanadium, platinum, or the like may be selected as the SCR catalyst 38. Examples of the material of the SCR chamber 37 include stainless steel, carbon steel, Can be selected.

On the other hand, on the side of the reducing agent injection unit 35 disposed inside the nitrogen oxide reduction box 20, the reducing agent is supplied to the side of the power generation engine 13 that is supplied to the SCR reactor 39 Exhaust gas ".

The reducing agent supply unit 34 has a structure to be disposed inside the nitrogen oxide reduction box 20 and serves to supply a reducing agent (e.g., urea) to the reducing agent injection unit 35 side.

In this case, on the side of the reducing agent supply line 46, the reducing agent supply unit 34 and the reducing agent injection unit 35 are connected to each other so that the reducing agent supplied from the reducing agent supply unit 34 side is supplied to the reducing agent injection unit 35 So that they can be delivered normally.

Under this situation, the reducing agent storage tank 32 has a structure to be disposed inside the nitrogen oxide reduction box 20 and serves to store a reducing agent (for example, urea) to be supplied to the reducing agent supply unit 32 side .

In this case, the reducing agent circulating line 44 side interconnects the reducing agent storage tank 32 and the reducing agent supply unit 34 so that the reducing agent stored in the reducing agent storage tank 32 is normally transferred to the reducing agent supply unit 34 To support the role of support.

A sensor (not shown) disposed on the exhaust gas distribution line 36, a sensor (not shown) disposed on the rear end of the SCR reactor 39, a reducing agent supply line A valve 42 disposed on the reducing agent supply line 46, a valve 41 disposed on the reducing agent distribution line 44, a valve 41 disposed on the exhaust gas exhaust line 18, (For example, the value of the harmful substance contained in the purified exhaust gas passing through the SCR reactor 39, the value of the reducing agent supplied from the reducing agent supply unit 34, etc.) transmitted from each sensor side while communicating with the valves 47, The flow pattern of the exhaust gas discharged from the power generation engine 13, the supply / distribution pattern of the reducing agent, and the like are appropriately adjusted by opening / closing the valves 41, 42, and 47 (Of course, each of the above-described distribution lines, The number, position, shape, etc. of flow paths, sensors, valves, etc., can be varied depending on the situation).

As shown in FIG. 1, the nitrogen oxide reduction process controller 31 according to the present invention may be installed separately in the nitrogen oxide reduction box 20, 10 may be installed in the computer module block of the integrated power generation unit control panel 11 disposed inside the integrated power generation unit control panel 11.

Of course, when the power generation engine 13 in the integrated power generation apparatus 10 is operated under the condition that the specific nitrogen oxide purification infrastructure is equipped, the nitrogen oxide discharged from the power generation engine 13 The exhaust gas contained in the exhaust gas flows through the exhaust gas exhaust line 18 and the exhaust gas circulation line 36 and then is supplied to the SCR reactor 39 side together with a reducing agent such as urea As a result, the nitrogen oxide (NO _x ) contained in the exhaust gas can naturally be seen in a pattern that is reduced to nitrogen and water vapor harmless to living organisms by the reducing action in the SCR catalyst 38.

As described above, in the present invention, the nitrogen oxide reduction box 20 of a container type (or a rectangular box type) which is easy to install and move is mounted / mounted on the integrated power generation apparatus 10 on which the power generation engine 13 is mounted, Various components for purifying the exhaust gas discharged from the engine for power generation 13 inside or outside the nitrogen oxide reduction box 20 such as the SCR reactor 39 and the reducing agent injection unit The reducing agent supply unit 34, the reducing agent storage tank 32, and the like can be flexibly taken. Therefore, under the environment of employment of the present invention, while effectively reduce / purify the nitrogen oxide (NO _x) discharged from the 13), nitrogen oxides (in particular region of the discharge is prohibited in the NO _x), can be adopted / operating flexibility of an integrated integrated power generator 10, do.

On the other hand, as shown in FIG. 2, in another embodiment of the present invention, a plurality of nitrogen oxide reduction boxes 20 are mounted on / installed on a plurality of integrated power generators 10 in a modified manner.

Of course, under the changed nitrogen oxide purification infrastructure of the present invention, even if the power generation main body side is in an embarrassed environment where a plurality of integrated power generation devices 10 are disposed, The exhaust gas discharged from the power generation engine 13 can be easily cleaned.

Also in this case, the integrated power generation device control panel 11, the generator 12, the power generation engine 13, the exhaust gas silencer 14, the ventilation air passage 14, Various components such as an exhaust fan 15, a ventilation air exhaust line 16, a radiator 17, an exhaust gas exhaust line 18, and the like are widely disposed.

Also in this case, the exhaust gas silencer 14, the radiator 17, and the like are formed on the top of each nitrogen oxide reduction box 20, and even under this situation, the exhaust gas on the side of each nitrogen oxide reduction box 20 (That is, the exhaust gas from which the nitrogen oxide removed from the nitrogen oxide reduction box 20 is removed) undergoes a mechanism of passing through the exhaust gas silencer 14 and then being discharged to the outside as required.

At the same time, the nitrogen oxide reduction system 100 of the present invention is constructed so that each of the nitrogen oxide reduction boxes 20 that are matched / mounted / installed on each of the integrated power generation apparatuses 10, And serves to provide a series of accommodating spaces capable of accommodating the SCR reactor 39, the exhaust gas circulating line 36, the reducing agent injecting unit 35 and the like while forming a structure of a rectangular box type The reducing agent supply unit 34, the reducing agent storage tank 32, and the like are disposed outside the respective nitrogen oxide reduction boxes 20, unlike the previous embodiment.

The exhaust gas distribution line 36 disposed inside each nitrogen oxide reduction box 20 has a structure connected to the exhaust gas exhaust line 18 on the integrated power generation apparatus and a structure connected to the SCR reactor 39 When the exhaust gas on the side of the power generation engine 13 containing nitrogen oxide is exhausted, the exhaust gas is moved to directly attract / supply the exhaust gas to the SCR reactor 39 side.

Under this situation, the respective SCR reactors 39 disposed in the respective nitrogen oxide reduction boxes 20 are connected to the exhaust gas exhaust line 18 via the exhaust gas distribution lines 36, (For example, nitrogen oxide (NO _x )) contained in the exhaust gas by passing exhaust gas from the power generation engine 13 side together with a reducing agent (for example, urea).

Even in this case, each SCR reactor 39 mixes the exhaust gas and the reducing agent simultaneously, reacts the nitrogen oxide (NO _x ) with the reducing agent, and reacts the nitrogen oxide (NO _x ) with nitrogen and water vapor An SCR catalyst 38 for reducing and an SCR chamber 37 for accommodating the SCR catalyst 38 are structurally combined.

At this time, zeolite, vanadium, platinum, or the like can be selected as the SCR catalyst 38. Examples of the material of the SCR chamber 37 include stainless steel, carbon steel Etc. may be selected.

On the other hand, on the side of each reducing agent injection unit 35 disposed in the respective nitrogen oxide reduction boxes 20, the reducing agent is supplied to the power generation engine (not shown) supplied to the SCR reactor 39 via the reducing agent injection nozzle 43 13) side exhaust gas.

At this time, on the reducing agent supply unit 34 side, a reducing agent (e.g., urea) is disposed outside the nitrogen oxide reduction box 20, (35).

In this case, on the side of each reducing agent supply line 46, the reducing agent supply unit 34 and the respective reducing agent injection units 35 are connected to each other so that the reducing agent supplied from the reducing agent supply unit 34 side, So that it can be normally transmitted to the injection unit 35.

Under this situation, the reducing agent storage tank 32 has a structure to be disposed outside the nitrogen oxide reduction box 20 and serves to store a reducing agent (for example, urea) to be supplied to the reducing agent supply unit 32 side .

The reducing agent storage tank 32 and the reducing agent supply unit 34 are connected to each other so that the reducing agent stored in the reducing agent storage tank 32 is normally transferred to the reducing agent supply unit 34 And to be able to do so.

(Not shown) disposed on each exhaust gas distribution line 36, sensors (not shown) disposed at the rear end of each SCR reactor 39, (Not shown) disposed on the reducing agent supply line 46, a valve 42 disposed on each reducing agent supply line 46, a valve 41 disposed on the reducing agent distribution line 44, (For example, a value of a toxic substance contained in the purified exhaust gas passed through the SCR reactor 39, a value of a toxic substance contained in the exhaust gas, The temperature of the reducing agent supplied from the supply unit 34, and the like), the flow pattern of the exhaust gas output from each of the power generation engines 13, Supply / distribution patterns, etc. (Of course, The number, position, and shape of each of the above-described distribution lines, flow paths, sensors, valves, and the like can be variously modified depending on the situation).

2, the nitrogen oxide reduction process controller 31 according to the present invention includes a control module 50 (for example, a computer, a notebook computer, etc.) disposed outside the integrated power generation apparatus 10, It is possible to adopt a structure that is installed in the block.

Of course, when the power generation engine 13 in each integrated power generation apparatus 10 is operated under the condition that the nitrogen oxide purification infrastructure according to another embodiment of the present invention is equipped, the power generation engine 13 is discharged from the power generation engine 13 The exhaust gas containing nitrogen oxides is supplied to the respective SCR reactors 39 together with a reducing agent (for example, urea) after passing through the respective exhaust gas exhaust lines 18, exhaust gas distribution lines 36, (NO _x ) contained in the exhaust gas is naturally reduced by the reduction action of the SCR catalyst 38, so that the pattern of reduction with nitrogen and water vapor harmless to the organism can be seen naturally do.

As described above, in the other embodiment of the present invention, a plurality of nitrogen oxide reduction (having a container type (or a rectangular box type) which is easy to install and move on the integrated power generation apparatus 10 on which the power generation engine 13 is mounted Various components for purifying the exhaust gas discharged from the respective engines 13 for power generation inside or outside the respective nitrogen oxide reduction boxes 20, for example, , The SCR reactor 39, the reducing agent spraying unit 35, the reducing agent supply unit 34, the reducing agent storage tank 32, and the like are arranged flexibly. Therefore, under the employment environment of the present invention, Even in a specific region in which the emission of nitrogen oxide (NO _x ) is strictly prohibited while effectively reducing / purifying nitrogen oxide (NO _x ) discharged from each of the power generation engines 13 without any difficulty, chapter So that the teeth 10 can be flexibly adopted / operated.

Such a design would have a generally beneficial effect in many areas where purification of the pollutant is required.

In addition, although specific embodiments of the present invention have been described and illustrated above, it is obvious that the present invention is susceptible to various modifications by those skilled in the art.

Such modified embodiments should not be understood individually from the technical idea or viewpoint of the present invention, and such modified embodiments should fall within the scope of the appended utility model registration claims of the present invention.

10: Integrated power generation device
10a: Integrated power generation unit main body
11: Integrated power generation control panel
12: generator
13: Power generation engine
14: Exhaust gas silencer
15: Ventilation air exhaust fan
16: Ventilation air exhaust line
17: Radiator
18: Exhaust gas exhaust line
20: Nitrogen oxide reduction box
31: Nitrogen oxide reduction process controller
32: Reducing agent storage tank
34: Reducing agent supply unit
35: Reducing agent injection unit
36: Exhaust gas distribution line
37: SCR chamber
38: SCR catalyst
39: SCR reactor
41, 42,
43: Reducing agent injection nozzle
44: Reducing agent distribution line
46: Reducing agent supply line
50: Control terminal
100: NOx reduction system

Claims (3)

A container type or square box type nitrogen oxide reduction box mounted on an integrated electric power generating apparatus equipped with an engine for power generation;
An exhaust gas distribution line installed inside the nitrogen oxide reduction box and connected to an exhaust gas exhaust line drawn out from the power generation engine;
A reducing agent injection unit installed in the nitrogen oxide reduction box and connected to the exhaust gas circulation line to inject a reducing agent toward the exhaust gas circulation line;
(NO _x ) contained in the exhaust gas, the exhaust gas being exhausted from the power generation engine and the reducing agent, together with the exhaust gas circulation line, installed inside the nitrogen oxide reduction box, And a selective catalytic reduction (SCR) reactor for purifying nitrogen and water vapor. 2. The nitrogen oxide reduction apparatus of claim 1, further comprising: a reducing agent storage tank installed inside the nitrogen oxide reduction box and storing a reducing agent;
Further comprising a reducing agent supply unit installed inside the nitrogen oxide reduction box and connected to the reducing agent storage tank to supply the reducing agent stored in the reducing agent storage tank to the reducing agent injection unit. system. A container type or square box type nitrogen oxide reduction box mounted on each of the integrated power generation units mounted with the engine for power generation;
An exhaust gas distribution line installed inside each nitrogen oxide reduction box and connected to an exhaust gas exhaust line drawn out from the power generation engine;
A reducing agent injection unit installed in each of the nitrogen oxide reduction boxes and connected to the exhaust gas distribution line to inject a reducing agent toward the exhaust gas distribution line;
(NO _x ) contained in the exhaust gas, the exhaust gas being exhausted from the power generation engine and the reducing agent, together with the exhaust gas circulation line, A selective catalytic reduction (SCR) reactor for purifying nitrogen and water vapor;
A reducing agent storage tank installed outside the nitrogen oxide reduction box and storing a reducing agent;
And a reducing agent supply unit provided outside the nitrogen oxide reduction box and connected to the reducing agent storage tank to jointly supply the reducing agent stored in the reducing agent storage tank to the reducing agent injection unit installed in each nitrogen oxide reduction box Wherein the nitrogen oxide reduction system comprises:

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