Stokehole valve group module of SNCR (selective non-catalytic reduction) denitration system

Abstract

The utility model relates to the technical field of SNCR (selective non-catalytic reduction) denitration, in particular to a stokehole valve group module of an SNCR denitration system. According to the technical scheme, the device comprises a storage tank, a discharge pipe and a confluence pipe, multiple sets of original agent pipes are fixedly installed above one side of the storage tank, a mixing motor is fixedly installed at the top of the storage tank, the output end of the mixing motor penetrates through the storage tank and is fixedly provided with a mixing slurry, and a flow dividing pipe is fixedly installed on the other side of the discharge pipe; and manual valves are fixedly mounted at the output ends of the flow dividing pipes. Through the combination of various structures, the module can fully dissolve urea and other raw agents in ammonia water, so that the uniformity of the reducing agent sprayed into a furnace is improved, and the situation that the urea and other raw agents in the reducing agent are not uniformly mixed to affect later denitration is avoided; and the module can be switched when one of the two groups of conduction pipes is blocked through the two groups of conduction pipes, so that the interiors of the conduction pipes are dredged and cleaned under the condition that the machine is not stopped.

Description

Technical Field

[0001] The utility model relates to the technical field of SNCR destocking, in particular to a furnace front valve group module of an SNCR destocking system. Background Art

[0002] SNCR, the full name of which is selective non-catalytic Reduction, Chinese name for selective non-catalytic reduction, refers to the reduction of nitrogen oxides in flue gas to harmless nitrogen and water by injecting a reducing agent within a "temperature window" suitable for denitration reaction without the action of a catalyst. When the SNCR is denitrated, a valve group module is used to control the injection of the reducing agent. The "a furnace-front valve group module of an SNCR denitration system" disclosed in the application number "CN204233968U" has solved the technical disadvantages of complex structure, bulky equipment, and waste of space. However, in actual use, similar structures still have many defects, such as single function, and the lack of uniform mixing of ammonia water and urea and other raw agents before the denitration reducing agent is injected. When the ammonia water and urea in the reducing agent are not uniformly mixed, it will affect the subsequent denitration; at the same time, most of them are transmitted and injected through a single pipeline. When the single pipeline is operated for a long time, the impurities generated during the hydrolysis of urea will adhere to the inner wall, affecting the flow or even blocking, resulting in poor stability of the valve group module during use, so it is necessary to design a furnace-front valve group module for an SNCR denitration system. Utility Model Content

[0003] The utility model aims to provide a furnace valve group module of a SNCR destocking system to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a furnace-front valve group module of an SNCR destocking system, comprising a storage tank, a discharge pipe and a confluence pipe, a plurality of groups of raw agent pipes are fixedly installed on the upper side of one side of the storage tank, a mixing motor is fixedly installed on the top of the storage tank, and a mixing paddle is fixedly installed on the output end of the mixing motor passing through the storage tank, a shunt pipe is fixedly installed on the other side of the discharge pipe, and a manual valve is fixedly installed on the output end of the shunt pipe, a filter pipe is fixedly installed on the other side of the manual valve, and a filter plate is fixedly installed inside the filter pipe, a conduction pipe is fixedly installed on the other side of the filter pipe, a one-way valve is fixedly installed on the input end of the confluence pipe, an injection pipe is fixedly installed on the output end of the confluence pipe, and a nozzle is fixedly installed on the output end of the injection pipe.

[0005] A furnace front valve group module of an SNCR destocking system using the technical solution is used, and the storage tank is connected to the external reagent pipeline through multiple groups of raw agent pipes, so that other raw agents such as ammonia water and urea can enter the storage tank. The mixing motor drives the mixing paddle to rotate inside the storage tank to stir and mix the raw agents such as ammonia water and urea, thereby increasing the uniformity of the internal components of the reducing agent when it is sprayed into the furnace, and avoiding the situation where the low uniformity of the reducing agent affects the subsequent destocking quality;

[0006] The discharge pipe can conduct and discharge the uniformly mixed reducing agent. The shunt pipe and the conduction pipe can cooperate to shunt the discharge pipe into two groups. The manual valve can control the shunt and conduction pipes. At the same time, the filter pipe and the internal filter plate can roughly filter the impurities in the reducing agent, reducing the blockage of the conduction pipe caused by impurities generated by urea in the reducing agent when it meets water, and reducing the frequency of staff's maintenance of the conduction pipe. When one group of conduction pipes is blocked, the staff can switch the reducing agent to another group of conduction pipes through the manual valve for conduction, thereby realizing the function of dredging and maintaining the inside of the conduction pipe without stopping the machine, avoiding the situation where the furnace body or subsequent equipment needs to be shut down for a long time due to the dredging of the conduction pipe, increasing the functionality of the module and improving the stability during use;

[0007] The confluence pipe can carry out river treatment on the two sets of conduction pipes, and the one-way valve can carry out one-way closing on the output ends of the two sets of conduction pipes, thereby avoiding the backflow of the conduction pipes when in use. The injection pipe can be inserted into the furnace body to inject the reducing agent, and the nozzle can spray the reducing agent evenly, thereby facilitating the catalytic treatment of the reducing agent by the high temperature in the furnace.

[0008] Preferably, a mounting plate is fixedly mounted on one side of the injection pipe, and a rubber pad is fixedly mounted on the other side of the mounting plate. The mounting plate can mount and fix the injection pipe, and the rubber pad increases the stability of the mounting plate during installation.

[0009] Preferably, a stabilizing ring is fixedly installed at the central position of the conductive tube, and a stabilizing frame is fixedly installed between the stabilizing rings. The stabilizing ring and the stabilizing frame can connect and reinforce the two groups of conductive tubes, thereby increasing the stability of the central position of the two groups of conductive tubes.

[0010] Preferably, a mounting ring is fixedly installed at the bottom of the conductive tube, and a mounting seat is fixedly installed at the bottom of the mounting ring. The mounting ring and the mounting seat can fix the bottom of the conductive tube when in use, thereby increasing the stability of the bottoms of the two sets of conductive tubes when in use.

[0011] Preferably, a fixing plate is fixedly installed on the front of the storage tank, and a liquid level window is fixedly installed inside the fixing plate. The liquid level window facilitates the staff to have a thorough understanding of the reducing agent liquid level inside the storage tank.

[0012] Preferably, a plurality of support frames are fixedly mounted on the bottom of the storage tank, and a foot plate is fixedly mounted on the bottom of the support frame. The support frame can support the bottom of the storage tank when it is placed, and the foot plate increases the force-bearing area of ​​the bottom of the support frame, thereby improving the stability of the support frame when supporting the storage tank.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By setting up the coordination between the storage tank, the mixing motor and the mixing paddle, the storage tank can store raw agents such as ammonia water and urea. The mixing motor drives the mixing paddle to rotate in the storage tank to stir and mix the raw agents such as ammonia water and urea, so that the raw agents such as urea can be fully dissolved in the ammonia water. Therefore, the uniformity of the reducing agent when sprayed into the furnace is improved, and the uneven mixing of raw agents such as urea in the reducing agent is avoided, which affects the situation of being out of stock in the later stage, and the functionality of the module is increased.

[0015] 2. By setting the coordination between the shunt pipe and the manual valve, the conduction pipe and the filter pipe, the shunt pipe and the conduction pipe can provide two sets of channels for the reducing agent to be sprayed into the furnace. At the same time, the impurities in the reducing agent can be roughly filtered through the filter pipe, thereby reducing the blockage of the conduction pipe caused by impurities during urea hydrolysis. The two sets of conduction pipes can be switched when one of them is blocked, thereby realizing the unblocking and cleaning of the inside of the conduction pipe without stopping the machine, which increases the stability of the module when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the storage tank of the utility model;

[0018] Figure 3 This is a schematic diagram of the installation structure of the conductive pipe of the utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the filter tube of the utility model;

[0020] Figure 5 This is a schematic diagram of the storage tank structure of the utility model.

[0021] In the figure: 1. support frame; 101. foot plate; 2. storage tank; 201. raw material pipe; 3. fixing plate; 301. liquid level window; 4. mixing motor; 401. mixing paddle; 5. discharge pipe; 501. diverter pipe; 6. manual valve; 7. filter pipe; 701. filter plate; 8. mounting ring; 801. mounting seat; 9. conduction pipe; 10. stabilizing ring; 1001. stabilizing frame; 11. confluence pipe; 1101. one-way valve; 12. assembly plate; 1201. rubber pad; 13. injection pipe; 1301. nozzle. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Embodiment 1

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a furnace front valve group module of an SNCR destocking system proposed by the utility model comprises a storage tank 2, a discharge pipe 5 and a confluence pipe 11, a plurality of raw agent pipes 201 are fixedly installed on the upper side of one side of the storage tank 2, a mixing motor 4 is fixedly installed on the top of the storage tank 2, and a mixing paddle 401 is fixedly installed on the output end of the mixing motor 4 passing through the storage tank 2, a shunt pipe 501 is fixedly installed on the other side of the discharge pipe 5, and a manual valve 6 is fixedly installed on the output end of the shunt pipe 501, a filter pipe 7 is fixedly installed on the other side of the manual valve 6, and a filter plate 701 is fixedly installed inside the filter pipe 7, a conduction pipe 9 is fixedly installed on the other side of the filter pipe 7, a one-way valve 1101 is fixedly installed on the input end of the confluence pipe 11, an injection pipe 13 is fixedly installed on the output end of the confluence pipe 11, and a nozzle 1301 is fixedly installed on the output end of the injection pipe 13;

[0025] A mounting plate 12 is fixedly mounted on one side of the injection pipe 13 , and a rubber pad 1201 is fixedly mounted on the other side of the mounting plate 12 . A mounting ring 8 is fixedly mounted on the bottom of the conduction pipe 9 , and a mounting seat 801 is fixedly mounted on the bottom of the mounting ring 8 .

[0026] The working principle of the furnace front valve group module of the SNCR destocking system based on Example 1 is as follows: the storage tank 2 is connected to the external reagent pipeline through multiple groups of raw agent pipes 201, so that other raw agents such as ammonia water and urea can enter the storage tank 2, and the mixing motor 4 drives the mixing paddle 401 to rotate inside the storage tank 2 to stir and mix the raw agents such as ammonia water and urea, thereby increasing the uniformity of the internal components of the reducing agent when it is sprayed into the furnace, and avoiding the situation where the low uniformity of the reducing agent affects the subsequent destocking quality;

[0027] The discharge pipe 5 can conduct and discharge the uniformly mixed reducing agent, the shunt pipe 501 and the conducting pipe 9 can cooperate to shunt the discharge pipe 5 into two groups, the manual valve 6 can control the shunt pipe 501 and the conducting pipe 9 when discharging, and at the same time, the filter pipe 7 and the internal filter plate 701 can roughly filter the impurities in the reducing agent, thereby reducing the blockage of the conducting pipe 9 caused by the impurities generated by the urea in the reducing agent when it meets water, and reducing the frequency of the staff's maintenance of the conducting pipe 9. When the inside of one group of conducting pipes 9 is blocked, the staff can switch the reducing agent to another group of conducting pipes 9 through the manual valve 6 for conduction, thereby realizing the function of dredging and maintaining the inside of the conducting pipe 9 without stopping the machine, avoiding the situation where the furnace body or subsequent equipment needs to be shut down for a long time due to the dredging of the conducting pipe 9, increasing the functionality of the module, and improving the stability during use;

[0028] The mounting ring 8 and the mounting seat 801 can fix the bottom of the conductive tube 9 when in use, thereby increasing the stability of the bottom of the two groups of conductive tubes 9 when in use. The confluence pipe 11 can perform river treatment on the two groups of conductive tubes 9. At the same time, the one-way valve 1101 can perform one-way closure on the output ends of the two groups of conductive tubes 9, thereby avoiding the backflow of the conductive tubes 9 when in use. The injection pipe 13 can be inserted into the furnace body to inject the reducing agent. The nozzle 1301 can evenly spray the reducing agent, thereby facilitating catalytic treatment thereof by the high temperature in the furnace. The assembly plate 12 can install and fix the injection pipe 13. At the same time, the rubber pad 1201 increases the stability of the assembly plate 12 during installation.

[0029] Embodiment 2

[0030] like Figure 1 , Figure 3 and Figure 5 As shown, a furnace front valve group module of an SNCR destocking system proposed by the utility model, compared with the first embodiment, this embodiment also includes: a stabilizing ring 10 is fixedly installed at the central position of the conduction pipe 9, and a stabilizing frame 1001 is fixedly installed between the stabilizing rings 10, a fixing plate 3 is fixedly installed on the front of the storage tank 2, and a liquid level window 301 is fixedly installed inside the fixing plate 3, a plurality of support frames 1 are fixedly installed on the bottom of the storage tank 2, and a foot plate 101 is fixedly installed on the bottom of the support frame 1.

[0031] In this embodiment, Figure 1 and Figure 3 As shown, the stabilizing ring 10 and the stabilizing frame 1001 can connect and reinforce the two groups of conducting tubes 9, thereby increasing the stability of the central position of the two groups of conducting tubes 9; Figure 1 and Figure 5 As shown, the liquid level window 301 facilitates the staff to have a thorough understanding of the reducing agent liquid level inside the storage tank 2; Figure 1 and Figure 5As shown, the support frame 1 can support the bottom of the storage tank 2 when it is placed, and the foot plate 101 increases the force-bearing area of ​​the bottom of the support frame 1, thereby improving the stability of the support frame 1 when supporting the storage tank 2.

[0032] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A furnace valve group module of an SNCR destocking system, comprising a storage tank (2), a discharge pipe (5), and a confluence pipe (11), characterized in that: A plurality of groups of raw material pipes (201) are fixedly installed above one side of the storage tank (2); a mixing motor (4) is fixedly installed on the top of the storage tank (2), and a mixing paddle (401) is fixedly installed on the output end of the mixing motor (4) passing through the storage tank (2); a shunt pipe (501) is fixedly installed on the other side of the discharge pipe (5), and a manual valve (6) is fixedly installed on the output end of the shunt pipe (501); a filter pipe (7) is fixedly installed on the other side of the manual valve (6), and a filter plate (701) is fixedly installed inside the filter pipe (7); a conduction pipe (9) is fixedly installed on the other side of the filter pipe (7); a one-way valve (1101) is fixedly installed on the input end of the confluence pipe (11); an injection pipe (13) is fixedly installed on the output end of the confluence pipe (11), and a nozzle (1301) is fixedly installed on the output end of the injection pipe (13).

2. The furnace valve group module of the SNCR destocking system according to claim 1 is characterized in that: A mounting plate (12) is fixedly mounted on one side of the outside of the injection pipe (13), and a rubber pad (1201) is fixedly mounted on the other side of the mounting plate (12).

3. The furnace valve group module of the SNCR destocking system according to claim 1 is characterized in that: A stabilizing ring (10) is fixedly installed at the central position of the conductive tube (9), and a stabilizing frame (1001) is fixedly installed between the stabilizing rings (10).

4. The furnace front valve group module of the SNCR destocking system according to claim 1 is characterized in that: A mounting ring (8) is fixedly mounted on the bottom of the conducting tube (9), and a mounting seat (801) is fixedly mounted on the bottom of the mounting ring (8).

5. The furnace front valve group module of the SNCR destocking system according to claim 1 is characterized by: A fixing plate (3) is fixedly mounted on the front of the storage tank (2), and a liquid level window (301) is fixedly mounted inside the fixing plate (3).

6. The furnace front valve group module of the SNCR destocking system according to claim 1 is characterized by: A plurality of sets of support frames (1) are fixedly mounted on the bottom of the storage tank (2), and a foot plate (101) is fixedly mounted on the bottom of the support frame (1).

Images