Gas-liquid homogeneous flow atomization mechanism

Abstract

The utility model relates to the field of environmental protection or the field of chemical medicine production, and discloses a gas-liquid homogeneous flow atomization mechanism, which comprises a liquid phase system, a gas phase system, an atomizer and the like, and can realize adjustment of high temperature or denitration of high-temperature NOx-containing flue gas through adaptive parameter design and ingenious layout of relative positions of devices. The utility model has the technical characteristics and advantages that: 1, the mixed fluid sprayed by the atomizer is more continuous and uniform, and the emission index of the treated flue gas to be treated is more stable; and 2, the possibility of series flow of a gas-liquid phase system is effectively avoided in the aspects of mechanism and mechanical structure, and the safety of an associated system is facilitated. In addition, the device is manufactured in a modularized mode, designed in a miniaturized mode, easy to construct, small in engineering material consumption, short in construction and debugging period and easy to popularize industrially.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of environmental protection or chemical medicine production field, concretely relates to a gas-liquid homogeneous flow atomization mechanism. BACKGROUND

[0002] With the introduction of GB13221-2011, GB26453-2011, GB28662-2012, GB4915-2013, GB29620-2013 and other national mandatory standards, more than 80% of NOx emissions from industrial air pollutants are required to be increased by auxiliary denitration system. The most commonly used auxiliary denitration technology is selective non-catalytic reduction (SNCR) technology and selective catalytic reduction (SCR) technology, and the reducing agent in the denitration process is 18-25% ammonia water or 5-40% urea solution. Because the denitration system is a pure chemical device, and the companies or design institutions engaged in environmental protection engineering have relatively shallow understanding of chemical mechanism, resulting in frequent problems such as unreasonable system design, unreasonable equipment selection and improper system use method, leading to safety accidents and environmental accidents. Based on the author's whole process research and analysis, enterprises often use inferior ammonia water or inferior urea to reduce the purchase price of reducing agent. The content of solid impurities in inferior reducing agent is generally higher than the design value of the system, and the strong corrosion of the reducing agent leads to intermittent failure of the liquid-gas phase check valve connected with the atomizer. The most important factor is that the reducing agent atomization mechanism is not reasonable, and the liquid phase is connected to the gas phase, and the gas phase is connected to the liquid phase. When the liquid-gas phase occurs, the reducing agent flow fluctuates sharply, the atomization effect is poor, and the terminal NOx emission value is unstable, resulting in environmental accidents. Production operators frequently disassemble and maintain the system to restore normal operation. Based on the fact that ammonia water with a concentration of more than 10% is a dangerous chemical and is highly toxic, the weak awareness of workers, the lack of labor protection articles and supervision in enterprises, and other factors lead to frequent safety accidents.

[0003] Therefore, the present application provides a gas-liquid homogeneous flow atomization mechanism, which eliminates the possibility of gas-liquid phase reverse connection from the mechanism, ensures the efficient and stable atomization effect of the atomizer, and indirectly reduces the safety and environmental accidents caused by the atomization mechanism. Utility model content

[0004] To solve the above-mentioned problems, the present application provides a gas-liquid homogeneous flow atomization mechanism.

[0005] The gas-liquid homogeneous flow atomization mechanism provided by the present application adopts the following technical scheme:

[0006] A kind of gas-liquid homogeneous flow atomization mechanism, including liquid phase system, gas phase system, atomizer, the liquid phase system includes liquid phase feed valve, liquid phase damping mechanism, liquid phase check valve, liquid phase conditioning tank, liquid phase conditioning tank drain pipe, blowdown valve;The components of the liquid phase system are sequentially connected by pipeline, finally with the liquid phase import end of atomizer is connected;The gas phase system includes gas phase feed valve, gas phase damping mechanism, gas phase check valve, gas phase conditioning tank, gas phase conditioning tank discharge pipe, the components of the gas phase system are sequentially connected by pipeline, finally with the gas phase import end of atomizer is connected.

[0007] In the technical scheme of the utility model, the gas-liquid phase medium entering the atomizer is sprayed into the temperature field to be denitration or the temperature field to be cooling by the nozzle end to achieve the purpose of flue gas treatment.

[0008] Further, the temperature range of the temperature field to be denitration is 850-1100 DEG C or 280-450 DEG C.

[0009] Further, the liquid phase flow flowing into the single set of atomizer is 5-350 L / h, and the gas phase flow flowing into the single set of atomizer is 8-200 times of the liquid phase flow.

[0010] In the technical scheme of the utility model, the liquid phase check valve of the liquid phase system is connected with the lower part of the liquid phase conditioning tank horizontally by pipeline, the liquid phase conditioning tank drain pipe is connected with the upper part of the liquid phase conditioning tank, preferably the top of the liquid phase conditioning tank.

[0011] In the technical scheme of the utility model, the gas phase check valve of the gas phase system is connected with the upper part of the gas phase conditioning tank horizontally by pipeline, preferably the 1 / 2-2 / 3 of the height of the gas phase conditioning tank.

[0012] In the technical scheme of the utility model, the gas phase conditioning tank discharge pipe is deep into the lower part of the gas phase conditioning tank, preferably the 1 / 3 of the height of the gas phase conditioning tank.

[0013] In the technical scheme of the utility model, the internal volume of the liquid phase conditioning tank is between 1-5 min of liquid phase flow volume, and the internal volume of the gas phase conditioning tank is between 1-8 min of gas phase flow volume.

[0014] In the technical scheme of the utility model, the liquid phase conditioning tank and the gas phase conditioning tank are vertically installed.

[0015] Further, the gas phase conditioning tank discharge pipe is vertically downwardly installed in the gas phase conditioning tank.

[0016] In summary, the present application has the following beneficial technical effects:

[0017] 1. Eliminate the liquid gas phase anti string, from the gas phase check valve upstream of the gas phase system material will not be affected by the corrosion from the liquid phase system, using conventional materials can meet the process requirements, reduce cost, save resources.

[0018] 2. Eliminate the liquid gas phase anti string, guarantee the high efficiency and stable atomization effect of the atomizer, indirectly reduce the safety and environmental protection accidents caused by the atomization mechanism problem.

[0019] 3. After the liquid gas phase no longer anti string, the atomizer can get continuous flow liquid phase medium cooling, increase the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the schematic diagram of the embodiment 1 of the utility model;

[0021] Figure 2 is the schematic diagram of the embodiment 2 of the utility model.

[0022] Mark explanation: 11, liquid phase feed valve;12, liquid phase damping mechanism;13, liquid phase check valve;14, liquid phase conditioning tank;15, liquid phase conditioning tank discharge pipe;16, blowdown valve;21, gas phase feed valve;22, gas phase damping mechanism;23, gas phase check valve;24, gas phase conditioning tank;25, gas phase conditioning tank discharge pipe;3, atomizer;31, liquid phase inlet end;32, gas phase inlet end;33, atomizer fixed assembly;34, nozzle end. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model will be described more clearly and completely by combining with the drawings and the description of preferred embodiments of the utility model.

[0024] Reference Figure 1 , a kind of gas-liquid homogeneous phase flow atomization mechanism, including liquid phase system, gas phase system, atomizer 3, liquid phase system includes liquid phase feed valve 11, liquid phase damping mechanism 12, liquid phase check valve 13, liquid phase conditioning tank 14, liquid phase conditioning tank discharge pipe 15, blowdown valve 16;Liquid phase system components are sequentially connected in order from small to large by pipeline, finally with the liquid phase inlet end 31 of atomizer 3 is connected;Gas phase system includes gas phase feed valve 21, gas phase damping mechanism 22, gas phase check valve 23, gas phase conditioning tank 24, gas phase conditioning tank discharge pipe 25, gas phase system components are sequentially connected in order from small to large by pipeline, finally with the gas phase inlet end 32 of atomizer 3 is connected, the outside of atomizer 3 is provided with atomizer fixed assembly 33.

[0025] Liquid phase system transports liquid phase medium by engineering diameter DN8~DN32 pipeline.

[0026] Gas phase system transports air with pressure by engineering diameter DN8~DN50 pipeline.

[0027] The medium from the liquid phase system and the medium from the gas phase system are mixed in the atomizer 3, and then the gas-liquid mixed medium is sprayed into the temperature field to be denitration or the temperature field to be cooling through the nozzle end 34 to achieve the purpose of flue gas treatment.

[0028] Further, the temperature range of the temperature field to be denitration is 850-1100℃ or 280-450℃.

[0029] Further, the liquid phase flow rate flowing into the single set of atomizer 3 is 5-350 L / h, and the gas phase flow rate flowing into the single set of atomizer 3 is 8-200 times of the liquid phase flow rate.

[0030] The process is as follows: the liquid phase medium with a pressure of 0.03-1.6 MPa sequentially passes through the liquid phase feeding valve 11, the liquid phase damping mechanism 12, and the liquid phase check valve 13, and then enters the liquid phase conditioning tank 14; after the liquid phase conditioning tank 14 is full, the liquid phase medium flows from the upper part or the top of the liquid phase conditioning tank 14 along the liquid phase tank discharge pipe 15 to the liquid phase inlet end 31 of the atomizer 3; the gas phase medium with a pressure of 0.12-0.9 MPa sequentially passes through the gas phase feeding valve 21, the gas phase damping mechanism 22, the gas phase check valve 23, the gas phase conditioning tank 24, and the gas phase conditioning tank discharge pipe 25, and then enters the gas phase inlet end 32 of the atomizer 3. After the liquid and gas phase media are mixed in the atomizer 3, they are sprayed from the nozzle end 34 into the environment to be treated.

[0031] The utility model will be further described in combination with specific examples.

[0032] Example 1

[0033] Referring to Figure 1 , the liquid phase medium is 5-25% wt ammonia-containing solution or process water, the liquid phase system enters the atomizer 3 from the radial liquid phase inlet end 31 of the atomizer 3, and the gas phase system enters the atomizer 3 from the axial gas phase inlet end 32 of the atomizer 3.

[0034] Example 2

[0035] Referring to Figure 2 , the liquid phase medium is 3-50% wt urea-containing solution, the liquid phase system enters the atomizer 3 from the axial liquid phase inlet end 31 of the atomizer 3, and the gas phase system enters the atomizer 3 from the radial gas phase inlet end 32 of the atomizer 3.

[0036] Finally, the following points should be noted: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0037] Secondly: the utility model discloses the embodiment in the drawing, only relate to the structure with the embodiment of the utility model, other structures can refer to the usual design, under the condition of not conflict, the same embodiment and different embodiment of the utility model can be combined with each other;

[0038] Finally: the above only for the preferred embodiment of the utility model has, and is not for limiting the utility model, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.

[0039] The above are the preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the scope of protection of the present application.

Claims

1. A gas-liquid homogeneous flow atomization mechanism, characterized by, The liquid phase system comprises a liquid phase feed valve (11), a liquid phase damping mechanism (12), a liquid phase check valve (13), a liquid phase conditioning tank (14), a liquid phase conditioning tank discharge pipe (15) and a blowdown valve (16), and the components are connected in sequence by pipes and finally connected to the liquid phase inlet end (31) of the atomizer (3); The gas phase system comprises a gas phase feed valve (21), a gas phase damping mechanism (22), a gas phase check valve (23), a gas phase conditioning tank (24) and a gas phase conditioning tank discharge pipe (25), and the components are connected in sequence by pipes and finally connected to the gas phase inlet end (32) of the atomizer (3).

2. The gas-liquid homogeneous flow atomization mechanism according to claim 1, characterized in that, The liquid phase check valve (13) of the liquid phase system is connected to the lower part of the liquid phase conditioning tank (14) by a pipe, and the liquid phase conditioning tank discharge pipe (15) is connected to the upper part of the liquid phase conditioning tank (14).

3. The gas-liquid homogeneous flow atomization mechanism according to claim 1, wherein The gas phase check valve (23) of the gas phase system is connected to the upper part of the gas phase conditioning tank (24) by a pipe.

4. The gas-liquid homogeneous flow atomization mechanism of claim 1, wherein, The gas phase conditioning tank discharge pipe (25) extends into the lower part of the gas phase conditioning tank (24).

5. The gas-liquid homogeneous flow atomization mechanism of claim 1, wherein, The internal volume of the liquid phase conditioning tank (14) is between 1-5 min of liquid phase flow volume, and the internal volume of the gas phase conditioning tank (24) is between 1-8 min of gas phase flow volume.

6. The gas-liquid homogeneous flow atomization mechanism of claim 1, wherein, The liquid phase conditioning tank (14) and the gas phase conditioning tank (24) are both installed vertically.

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