CN218687999U

CN218687999U - Exhaust gas desulfurization system

Info

Publication number: CN218687999U
Application number: CN202222890488.2U
Authority: CN
Inventors: 王远; 刘瑶; 张馨宇
Original assignee: Beijing Aerospace Yisen Wind Tunnel Engineering Technology Co ltd
Current assignee: Beijing Aerospace Yisen Wind Tunnel Engineering Technology Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-03-24
Anticipated expiration: 2032-10-31

Abstract

The utility model provides a waste gas desulfurization system, including the waste gas input port, desulphurization unit and gas vent, the waste gas input port links to each other through the input pipeline with desulphurization unit, desulphurization unit passes through the output pipeline with gas vent and links to each other, the input pipeline is including parallelly connected first pipeline and the second pipeline that sets up, be provided with first valve and air-vent valve on the first pipeline, be provided with the second valve on the second pipeline, first valve is connected with a control module with the second valve respectively, control module opens first valve or second valve selectively, so that the waste gas input port is linked together with desulphurization unit after through first pipeline pressure regulating, or make the waste gas input port be linked together with desulphurization unit through the second pipeline. The device can perform desulfurization treatment on the waste gas, and the waste gas is discharged through the gas discharge port after reaching the discharge standard; and the two-way parallel connection mode is adopted for desulfurization treatment, so that the requirements of desulfurization treatment of waste gas with different pressures can be met.

Description

Exhaust gas desulfurization system

Technical Field

The present disclosure relates to the field of exhaust gas treatment systems, and in particular, to exhaust gas desulfurization systems.

Background

With the rapid development of industrial technology in China, people bring about industrial production and test processesThe environmental hazard of sulfur dioxide (SO) in the waste gas generated in industrial production and test processes is more and more important ₂ ) Is the main cause of air pollution, therefore, how to effectively reduce SO ₂ Pollution is the urgent need for atmospheric environmental control nowadays.

SUMMERY OF THE UTILITY MODEL

In view of the above, in order to at least partially solve the above problems, the present disclosure provides an exhaust gas desulfurization system, and the technical solutions are as follows.

The utility model provides a flue gas desulfurization system, includes waste gas input port, desulphurization unit and gas discharge port, the waste gas input port with desulphurization unit passes through the input pipeline and links to each other, desulphurization unit with gas discharge port passes through the output pipeline and links to each other, the input pipeline is including parallelly connected first pipeline and the second pipeline that sets up, be provided with first valve and air-vent valve on the first pipeline, be provided with the second valve on the second pipeline, first valve with the second valve is connected with a control module respectively, control module opens selectively first valve or the second valve, so that the waste gas input port passes through behind the first pipeline pressure regulating with desulphurization unit is linked together, or makes the waste gas input port pass through the second pipeline with desulphurization unit is linked together.

In an embodiment, the system further comprises a driving gas input port, and the pressure regulating valve is connected to the driving gas input port through a pneumatic control pipeline.

In one embodiment, an electric proportional valve is disposed on the pneumatic control line.

In an embodiment, the input line further comprises a first main line, the first valve and the second valve are both connected to the waste gas input port through the first main line, and the first main line is provided with a first filter.

In an implementation manner, the input pipeline further includes a second main pipeline, the first valve and the second valve are both connected to the desulfurization device through the second main pipeline, and a mass flow controller is disposed on the second main pipeline.

In one embodiment, a relief valve is connected to the second main line.

In an embodiment, a pressure gauge is connected to the second main pipe.

In one embodiment, a second filter is disposed on the pneumatic control line and is located between the electric proportional valve and the drive gas input port.

In an embodiment, a sampling pipeline is connected to the output pipeline, and a sampling valve is arranged on the sampling pipeline.

In an embodiment, a gas analyzer is further disposed on the sampling line.

The present disclosure has the following beneficial effects: the waste gas can be desulfurized and discharged through the gas discharge port after reaching the discharge standard; and the two-way parallel connection mode is adopted for desulfurization treatment, so that the requirements of desulfurization treatment of waste gas with different pressures can be met.

Advantages and features of the present disclosure are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the present disclosure are included to provide an understanding of the present disclosure. The drawings illustrate embodiments of the disclosure and, together with the description, serve to explain the principles of the disclosure. In the drawings, there is shown in the drawings,

FIG. 1 is a block diagram of a flue gas desulfurization system according to an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic block diagram of a partial control of a flue gas desulfurization system according to an exemplary embodiment of the present disclosure.

The reference numbers in the figures illustrate:

101. an exhaust gas inlet; 102. a gas discharge port; 103. a drive gas input port; 111. a first pipeline; 112. a second pipeline; 113. a first main pipeline; 114. a second main pipeline; 12. an output pipeline; 121. a sampling pipeline; 13. a first valve; 14. a second valve; 15. a pressure regulating valve; 16. a pneumatic control pipeline; 17. an electric proportional valve; 18. a first filter; 19. a mass flow controller; 20. a desulfurization unit; 21. a safety valve; 22. a pressure gauge; 23. a second filter; 24. a sampling valve; 25. a gas analyzer; 26. a sensor; 30. and a control module.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the present disclosure. One skilled in the art, however, will understand that the following description merely illustrates alternative embodiments of the disclosure and that the disclosure may be practiced without one or more of these details. In addition, some features that are well known in the art have not been described in detail to avoid obscuring the present disclosure.

As shown in fig. 1 and 2, the flue gas desulfurization system of the present disclosure includes a flue gas input port 101, a desulfurization device 20, and a gas discharge port 102. The waste gas input port 101 is connected to the desulfurization device 20 via an input line, and waste gas generated during industrial production and testing can be input to the waste gas input port 101. The desulfurizer 20 is connected to the gas discharge port 102 via the outlet line 12, and the exhaust gas is desulfurized by the desulfurizer 20 to meet the discharge standard and then discharged via the gas discharge port 102. The input pipeline comprises a first pipeline 111 and a second pipeline 112 which are arranged in parallel, a first valve 13 and a pressure regulating valve 15 are arranged on the first pipeline 111, a second valve 14 is arranged on the second pipeline 112, the first valve 13 and the second valve 14 are respectively connected with a control module 30, and the control module 30 selectively opens the first valve 13 or the second valve 14, so that the waste gas input port 101 is communicated with the desulfurization device 20 after being subjected to pressure regulation through the first pipeline 111, or the waste gas input port 101 is communicated with the desulfurization device 20 through the second pipeline 112.

Here, the desulfurization device 20 can perform desulfurization treatment by using the conventional dry acid gas adsorption purification process, that is, by using a dry acid gas adsorbent (abbreviated as SDG adsorbent), it should be understood that the SDG adsorbent is a solid particulate inorganic substance with a large specific surface area, and when the acid gas in the gas to be purified reaches the surface adsorption force field of the SDG adsorbent, the SDG adsorbent is fixed on the surface thereof and then chemically reacts with the active component therein to generate a new neutral salt substance, which is stored in the structure of the SDG adsorbent. The SDG adsorbent is a multifunctional comprehensive function for purifying acid gas, and has chemical adsorption, particle adsorption, catalysis, chemical reaction and the like besides general physical adsorption. The SDG adsorption purification process has the following characteristics: 1. can purify a plurality of acid gases at one time when the acid gases exist at the same time; 2. the purification efficiency is high, the purification rate of the SDG adsorption purification process can be designed according to the requirements of users, namely the purification efficiency can be designed at will on the basis of meeting national and local environmental protection regulations; 3. the use and the operation are very convenient, when the SDG adsorption and purification process flow is installed, the purification process can be automatically completed as long as the fan is started without the management of a specially-assigned person; 4. the method has no special requirements on environmental conditions, for example, lye in northern areas needs to be absorbed indoors, otherwise, the lye can not be used after being frozen, the SDG adsorption and purification process has no concern, the activated carbon adsorption is influenced under the high temperature condition in southern areas, and the SDG adsorbent is not influenced; 5. the SDG adsorbent is a weakly alkaline solid inorganic substance, is nontoxic and noncorrosive, and is neutral after saturated adsorption; 6. no secondary pollution, no water is used in the process, no waste water is generated, and the adsorbent after saturated adsorption can be used as harmless garbage for road repair or pit filling and the like; 7. the operation cost is low, the maintenance is free, and the adsorbent can be replaced regularly.

Here, the control module 30 may adopt a common programmable logic controller, or may adopt a computer and combine with a program to control, which is not described herein.

The waste gas desulfurization system disclosed by the invention can be used for carrying out desulfurization treatment on waste gas based on the arrangement of the desulfurization device 20, and discharging the waste gas through the gas discharge port 102 after the waste gas reaches the discharge standard; and the two-way parallel connection mode is adopted for desulfurization treatment, so that the requirements of desulfurization treatment of waste gas with different pressures can be met. For example, when the input pressure of the waste gas at the waste gas input port 101 is greater than or equal to 0.8MPa, the control module 30 may control the first valve 13 to open, and the pressure of the waste gas is reduced to 0.6MPa through the pressure regulating valve 15, and then the waste gas is desulfurized by the desulfurizer 20 and discharged through the gas discharge port 102; when the input pressure of the waste gas at the waste gas input port 101 is less than 0.8MPa, the control module 30 can control the second valve 14 to open, and the waste gas flows to the desulfurization device 20 through the second pipeline 112, is desulfurized by the desulfurization device 20, and is discharged through the gas discharge port 102.

In the embodiment of the present disclosure, the exhaust gas desulfurization system further includes a driving gas input port 103, and the pressure regulating valve 15 is connected to the driving gas input port 103 through the pneumatic control pipeline 16, so that the pressure regulating valve 15 is a pneumatic control pressure regulating valve, and thus, the pressure value of the exhaust gas output can be controlled in real time, so as to realize pressure swing adsorption and further better treat the exhaust gas.

In the embodiment of the present disclosure, the pneumatic control pipeline 16 is provided with an electric proportional valve 17, so that the pressure swing adsorption can be better realized by automatic control of the electric proportional valve 17.

Referring again to fig. 1, the input pipeline further includes a first main pipeline 113, the first valve 13 and the second valve 14 are both connected to the exhaust gas input port 101 through the first main pipeline 113, and the first main pipeline 113 is provided with a first filter 18, so that particulate impurities in the exhaust gas can be filtered, and downstream components (such as the first valve 13, the second valve 14, and a mass flow controller 19 described later) are prevented from being damaged by impact of the particulate impurities, and the service life of the downstream components is prolonged.

Further, the input pipeline further includes a second main pipeline 114, the first valve 13 and the second valve 14 are both connected to the desulfurization device 20 through the second main pipeline 114, a mass flow controller 19 is disposed on the second main pipeline 114, the mass flow controller 19 can be controlled in real time through a feedback signal of an online gas analyzer (the online gas analyzer is not shown in the figure), so as to adjust the output flow of the exhaust gas in real time, so as to better process the exhaust gas, and the mass flow controller 19 can also automatically adjust the output flow according to the processing condition of the desulfurization device 20 on the exhaust gas, so as to ensure the stability and high efficiency of the desulfurization effect. Here, the mass flow controller 19 may be an existing thermal mass flow controller 19, and since the thermal mass flow controller 19 belongs to the prior art, the detailed description thereof is omitted here.

Furthermore, a safety valve 21 may be connected to the second main pipeline 114, and the safety valve 21 may prevent the second main pipeline 114 from overpressure, so as to ensure safety and reliability.

Further, a pressure gauge 22 may be connected to the second main line 114, the pressure gauge 22 may be used as a field display instrument for displaying the inlet pressure of the mass flow controller 19, it should be understood that, in order to detect the inlet pressure of the mass flow controller 19, the second main line 114 is connected with a sensor 26, and the inlet pressure of the mass flow controller 19 detected by the sensor 26 is displayed by the pressure gauge 22.

In the embodiment of the present disclosure, the second filter 23 is disposed on the pneumatic control pipeline 16, and the second filter 23 is located between the electric proportional valve 17 and the driving gas input port 103, so as to filter particulate impurities in the driving gas, prevent downstream devices (such as the electric proportional valve 17) from being damaged by the impact of the particulate impurities, and prolong the service life of the downstream devices.

In the embodiment of the present disclosure, the output pipeline 12 is connected with a sampling pipeline 121, the sampling pipeline 121 is provided with a sampling valve 24, and based on the setting of the sampling valve 24, the gas after desulfurization treatment can be conveniently sampled, so as to perform chemical analysis.

Further, the sampling pipeline 121 is further provided with a gas analyzer 25, and based on the setting of the gas analyzer 25, the chemical parameter measurement can be performed on the gas after the desulfurization treatment, so that the important functions of controlling the production environment, reducing safety accidents and the like can be achieved.

In application, the waste gas desulfurization system disclosed by the invention can be used for carrying out desulfurization treatment on waste gas discharged in the processes of purging, replacing, regulating and stabilizing during the use of the gas distribution module, and discharging the waste gas to the outside through a pipeline after the waste gas reaches the discharge standard; or decompressing and outputting the gas which is mixed in the high-pressure storage tank and then returns to the normal temperature, desulfurizing the gas, and discharging the gas to the outside through a pipeline after the gas reaches the discharge standard.

In the description of the present disclosure, it is to be understood that the orientation or positional relationship indicated by the orientation terms is generally based on the orientation or positional relationship shown in the drawings, and is for convenience only to facilitate the description of the present disclosure and to simplify the description, and in the case of not having been stated to the contrary, these orientation terms are not intended to indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be taken as limiting the scope of the present disclosure; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one or more components or features to other components or features as illustrated in the figures. It is to be understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations of the component in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the disclosure described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

The present disclosure has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the present disclosure to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present disclosure is not limited to the embodiments described above, and that many variations and modifications may be made in light of the teaching of the present disclosure, all of which fall within the scope of the claimed disclosure. The scope of the disclosure is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a flue gas desulfurization system, includes waste gas input port, desulphurization unit and gas discharge port, the waste gas input port with desulphurization unit passes through the input pipeline and links to each other, desulphurization unit with gas discharge port passes through the output pipeline and links to each other, a serial communication port, the input pipeline is including parallelly connected first pipeline and the second pipeline that sets up, be provided with first valve and air-vent valve on the first pipeline, be provided with the second valve on the second pipeline, first valve with the second valve is connected with a control module respectively, control module opens selectively first valve or the second valve, so that the waste gas input port passes through behind the first pipeline pressure regulating with desulphurization unit is linked together, or makes the waste gas input port pass through the second pipeline with desulphurization unit is linked together.

2. The flue gas desulfurization system of claim 1, further comprising a drive gas input port, wherein the pressure regulating valve is connected to the drive gas input port by a pneumatic control line.

3. The flue gas desulfurization system according to claim 2, wherein an electric proportional valve is provided on the pneumatic control line.

4. The flue gas desulfurization system of claim 1, wherein the input line further comprises a first main line, the first valve and the second valve are both connected to the flue gas input port via the first main line, and a first filter is disposed on the first main line.

5. The flue gas desulfurization system of claim 4, wherein the input line further comprises a second main line, the first valve and the second valve are both connected to the desulfurization device via the second main line, and a mass flow controller is disposed on the second main line.

6. The flue gas desulfurization system according to claim 5, wherein a relief valve is connected to the second main line.

7. The flue gas desulfurization system according to claim 5, wherein a pressure gauge is connected to the second main line.

8. The flue gas desulfurization system of claim 3, wherein a second filter is disposed on the pneumatic control line and is positioned between the electric proportional valve and the drive gas input port.

9. The flue gas desulfurization system according to any one of claims 1 to 8, wherein a sampling line is connected to the output line, and a sampling valve is provided on the sampling line.

10. The flue gas desulfurization system according to claim 9, wherein a gas analyzer is further provided on the sampling line.