阅读说明：本技术 再生铅冶炼中含硫尾气实时监控系统 (Real-time monitoring system for sulfur-containing tail gas in secondary lead smelting ) 是由 贾磊 曹睿 蔡以辉 王振飞 王脐君 于 2019-09-25 设计创作，主要内容包括：本发明公开了再生铅尾气处理技术领域的一种再生铅冶炼中含硫尾气实时监控系统,包括尾气处理组件、初步检测装置、精检测装置和排放装置,尾气处理组件通过烟尘管导入原始尾气,尾气处理装置与初步检测装置之间通过初检测管道相连通,检测尾气处理装置与初步检测装置之间固定设有检测预处理组件,尾气处理组件与排放装置通过连通管连通,尾气处理组件与排放装置之间固定设有精检测装置,排放装置连通有回流管,回流管与连通管的管路上均设有管路连通电磁阀,连通管管路上安装有定时截止阀,精检测装置包括检测组件和控制组件,控制组件与电磁阀和定时截止阀电连接,本发明可实现不达标尾气不停机处理,避免浪费资源,防止不达标尾气外泄,保护环境。(The invention discloses a real-time monitoring system for sulfur-containing tail gas in secondary lead smelting, which belongs to the technical field of secondary lead tail gas treatment and comprises a tail gas treatment component, a primary detection device, a fine detection device and a discharge device, wherein the tail gas treatment component introduces original tail gas through a smoke pipe, the tail gas treatment device is communicated with the primary detection device through a primary detection pipeline, a detection pretreatment component is fixedly arranged between the detection tail gas treatment device and the primary detection device, the tail gas treatment component is communicated with the discharge device through a communicating pipe, the fine detection device is fixedly arranged between the tail gas treatment component and the discharge device, the discharge device is communicated with a return pipe, the return pipe and the pipeline of the communicating pipe are respectively provided with a pipeline communicating electromagnetic valve, the pipeline of the communicating pipe is provided with a timing stop valve, the fine detection device comprises a detection component and a control component, and the control component, the invention can realize the non-stop treatment of the tail gas which does not reach the standard, avoid the waste of resources, prevent the tail gas which does not reach the standard from leaking and protect the environment.)

1. The utility model provides a real-time monitoring system of tail gas that contains sulphur in secondary lead smelting, includes tail gas treatment component, preliminary detection device, smart detection device and discharging equipment, its characterized in that: the tail gas treatment assembly is used for introducing original tail gas through a smoke pipe, the tail gas treatment assembly is communicated with a primary detection device through a primary detection pipeline, a detection pretreatment assembly is fixedly arranged between the detection tail gas treatment device and the primary detection device, the tail gas treatment assembly is communicated with a discharge device through a communicating pipe, a fine detection device is fixedly arranged between the tail gas treatment assembly and the discharge device, the discharge device is communicated with a return pipe, pipeline communicating electromagnetic valves are arranged on the return pipe and the communicating pipe, a timing stop valve is installed on the communicating pipe pipeline, the fine detection device comprises a detection assembly and a control assembly, and the control assembly is electrically connected with the electromagnetic valve and the timing stop valve.

2. the system for monitoring the sulfur-containing tail gas in the secondary lead smelting in real time according to claim 1, characterized in that: the tail gas treatment component comprises a lengthened flue, a dust collection cloth bag, a heat exchanger, a cooler, a dust remover and a desulfurization device, and tail gas sequentially passes through the devices.

3. The system for monitoring the sulfur-containing tail gas in the secondary lead smelting in real time according to claim 1, characterized in that: the communicating pipe comprises a main exhaust pipe and a fine detection pipe, and the fine detection device is fixedly arranged on a pipeline of the fine detection pipe.

4. The system for monitoring the sulfur-containing tail gas in the secondary lead smelting in real time according to claim 1, characterized in that: the detection pretreatment assembly comprises a tail gas dust removal filter element, an impurity removal assembly and a gas flow control valve, wherein the tail gas dust removal filter element comprises filter cloth and the like.

5. The system for monitoring the sulfur-containing tail gas in the secondary lead smelting in real time according to claim 1, characterized in that: the preliminary detection device comprises a sample absorber and a reactor, and the sulphur content in the tail gas is detected by adopting an iodometric titration detection method.

6. the system for monitoring the sulfur-containing tail gas in the secondary lead smelting in real time according to claim 1, characterized in that: the fine detection device is a detection device for detecting sulfur content by selecting an ion flow tube method and comprises an ion source, a flow tube area and a mass spectrometry detection area.

7. The system for monitoring the sulfur-containing tail gas in the secondary lead smelting in real time according to claim 1, characterized in that: the exhaust device comprises an exhaust emission component and an exhaust state display device, the exhaust emission component comprises an exhaust pipe and a chimney, the exhaust state display device comprises an emission sensor and a display, and the emission sensor is electrically connected with the display.

8. The system for monitoring the sulfur-containing tail gas in the secondary lead smelting in real time according to claim 1, characterized in that: and the detection assembly of the fine detection device transmits data to the control assembly after detecting a result, and the control assembly controls the electromagnetic valve and the timing stop valve according to the transmission data.

9. The system for monitoring the sulfur-containing tail gas in the secondary lead smelting in real time according to claim 1, characterized in that: the backflow pipe is communicated with a standby desulfurizing tower, and the standby desulfurizing tower is communicated with a weight detection pipe and an qualified external discharge pipe.

Technical Field

The invention relates to the technical field of secondary lead tail gas treatment, in particular to a real-time monitoring system for sulfur-containing tail gas in secondary lead smelting.

Background

compared with the original lead, the regenerated lead has high recovery rate, low energy consumption and cost (the production cost is reduced by about 38 percent compared with the original lead according to measurement and calculation), large resource potential (the resource potential can be recycled in the process of producing the lead and is increased along with the increase of lead consumption), the recovery of the regenerated lead resource is beneficial to environmental protection, the recovery of waste metal reduces the consumption of the original lead ore resource, protects the mineral reserve and prolongs the exploitation period of the lead ore, and the waste lead mainly comes from a polar plate of a storage battery, a cable armor, a pipeline, a lead bomb and a lead plate. The waste lead is collected and sent to a secondary lead factory for remelting and remilling, and refined lead, soft lead and various lead-based alloys can be produced. The lead recovered from the waste batteries and cable sheathing contains a small amount of antimony and other metals, and this secondary lead is generally still sold to battery manufacturers. Most of the regenerated lead containing tin is reused for manufacturing welding rods, bearing alloys and other lead-tin alloys. Lead in gasoline and dye can not be recovered, and is a main factor of lead to environmental pollution. Lead in foil, welding rods, heat treatment and electroplating is currently difficult to recover. At present, most processes for regenerating lead are carried out by various processes, tail gas is discharged when the processes are carried out, the tail gas contains a large amount of sulfides, the tail gas is directly discharged into the atmosphere to pollute the environment, natural disasters such as acid rain and the like are caused, the tail gas is discharged into the atmosphere after desulfurization treatment, most factories of discharged gas often do not reach the standard, and monitoring equipment is not used for controlling tail gas discharge in real time.

Based on the above, the invention designs a real-time monitoring system for sulfur-containing tail gas in secondary lead smelting, so as to solve the problems.

Disclosure of Invention

The invention aims to provide a real-time monitoring system for sulfur-containing tail gas in secondary lead smelting, which aims to solve the problems that most processes of secondary lead proposed in the background art need to discharge tail gas during operation, the tail gas contains a large amount of sulfides, the tail gas is directly discharged into the atmosphere to pollute the environment, natural disasters such as acid rain and the like are caused, the tail gas needs to be discharged into the atmosphere after desulfurization treatment, most factories of discharged gas often do not reach the standard, and no monitoring equipment is used for controlling tail gas discharge in real time.

In order to achieve the purpose, the invention provides the following technical scheme:

A real-time monitoring system for sulfur-containing tail gas in secondary lead smelting, which comprises a tail gas treatment component, a primary detection device, a fine detection device and a discharge device, the tail gas treatment component introduces original tail gas through a smoke pipe, the tail gas treatment device is communicated with the primary detection device through a primary detection pipeline, a detection pretreatment component is fixedly arranged between the detection tail gas treatment device and the primary detection device, the tail gas treatment component is communicated with the discharge device through a communicating pipe, a fine detection device is fixedly arranged between the tail gas treatment component and the discharge device, the discharge device is communicated with a return pipe, the return pipe and the pipeline of the communicating pipe are both provided with a pipeline communicating electromagnetic valve, the timing stop valve is installed on the communicating pipe, the precise detection device comprises a detection assembly and a control assembly, and the control assembly is electrically connected with the electromagnetic valve and the timing stop valve.

Preferably, the tail gas treatment component comprises a lengthened flue, a dust collection cloth bag, a heat exchanger, a cooler, a dust collector and a desulfurization device, and tail gas sequentially passes through the devices, precipitates dust particles through the lengthened flue, is collected by the dust collection cloth bag, separates most of the dust particles from the tail gas and is convenient for subsequent treatment.

Preferably, communicating pipe includes main calandria and smart detection tube, smart detection device is fixed to be established on the pipeline of smart detection tube, is equipped with smart detection tube alone, convenient the detection.

Preferably, the detection pretreatment assembly comprises a tail gas dust removal filter element, an impurity removal assembly and a gas flow control valve, wherein the tail gas dust removal filter element is composed of filter cloth and the like, and other fine dust and the like are filtered after the tail gas dust removal filter element is processed.

Preferably, the preliminary detection device comprises a sample absorber and a reactor, the preliminary detection device detects the sulfur content in the tail gas by adopting an iodometric titration detection method, and the iodometric titration detection method has low detection cost and high precision.

preferably, the fine detection device is a detection device for detecting sulfur content by using a selective ion flow tube method, and comprises an ion source, a flow tube region and a mass spectrometry detection region, wherein the selective ion flow tube method can be used for real-time monitoring and has high response speed and sensitivity.

Preferably, the exhaust device comprises an exhaust emission assembly and an emission state display device, the exhaust emission assembly comprises an exhaust pipe and a chimney, the emission state display device comprises an emission sensor and a display, and the emission sensor is electrically connected with the display.

Preferably, the detection assembly of the fine detection device transmits data to the control assembly after detecting the result, and the control assembly controls the electromagnetic valve and the timing stop valve according to the transmission data.

Preferably, the return pipe is communicated with a standby desulfurizing tower, and the standby desulfurizing tower is communicated with a weight detection pipe and an extra exhaust pipe.

Compared with the prior art, the invention has the beneficial effects that:

1. According to the invention, dust precipitated from flue gas generated by a smelting furnace smelting system through a lengthened flue is collected by a dust collection cloth bag, the dust is treated by a heat exchanger, a cooler, a dust remover and a desulfurization device to obtain treated tail gas, the tail gas treated by the dust remover is subjected to further dust removal treatment by a pretreatment device on a primary detection pipeline, the tail gas is collected by a sample collector according to national standards, the sulfur content in the tail gas is detected by an iodometry method, and then the sulfur content in the flue gas in an initial state is obtained through measurement and calculation, so that the sulfur content in the tail gas can be conveniently and accurately detected, and the desulfurization treatment control of subsequent processes is facilitated.

2. The tail gas behind the desulphurization unit exports the blast pipe simultaneously through main calandria and smart check pipe, after the tail gas of smart check pipe is collected, send into SIFT detection device, the quantitative analysis contains sulphur gas, detect out sulphur content data through SIFT device, adopt the mobile pipe method of selection ion to detect tail gas, real-time detection, the response is fast, the tail gas emission can in time be adjusted to the cooperation control module, and cooperate reserve desulfurizing tower, can realize the tail gas of not reaching standard and shut down the processing, avoid extravagant resource, prevent that the tail gas of not reaching standard from leaking, the environmental protection.

3. When the fine detection is carried out, a certain amount of tail gas is regularly discharged by opening through the timing stop valve of the fine detection pipe to be detected, and when the heavy detection pipe is started, the tail gas is regularly discharged by opening through the timing stop valve of the heavy detection pipe to be detected, and the timing stop valves of the heavy detection pipe and the fine detection pipe are staggered and opened, namely, the two detection are asynchronous and are alternately carried out without mutual influence. Qualified tail gas all discharges through blast pipe and chimney, and when having gas outgoing in the blast pipe, detect emission rate through the emission sensor who is equipped with on its pipeline, inside temperature etc. shows with digital form through the display, can directly perceivedly see the discharge state to real-time recording parameter makes things convenient for work regulation and control and supervision.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a sulfur tail gas treatment assembly according to the present invention;

FIG. 2 is a schematic view of a tail gas detection process according to the present invention;

FIG. 3 is a schematic view of the tail gas monitoring process of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

A real-time monitoring system for sulfur-containing tail gas in secondary lead smelting, which comprises a tail gas treatment component, a primary detection device, a fine detection device and a discharge device, the tail gas treatment component introduces original tail gas through a smoke pipe, the tail gas treatment device is communicated with the primary detection device through a primary detection pipeline, a detection pretreatment component is fixedly arranged between the detection tail gas treatment device and the primary detection device, the tail gas treatment component is communicated with the discharge device through a communicating pipe, a fine detection device is fixedly arranged between the tail gas treatment component and the discharge device, the discharge device is communicated with a return pipe, the return pipe and the pipeline of the communicating pipe are both provided with a pipeline communicating electromagnetic valve, the timing stop valve is installed on the communicating pipe, the precise detection device comprises a detection assembly and a control assembly, and the control assembly is electrically connected with the electromagnetic valve and the timing stop valve.

The tail gas treatment component comprises a lengthened flue, a dust collection cloth bag, a heat exchanger, a cooler, a dust remover and a desulfurization device, and tail gas sequentially passes through the devices. The communicating pipe comprises a main exhaust pipe and a fine detection pipe, and the fine detection device is fixedly arranged on the pipeline of the fine detection pipe. The detection pretreatment assembly comprises a tail gas dust removal filter element, an impurity removal assembly and a gas flow control valve, wherein the tail gas dust removal filter element comprises filter cloth and the like. The preliminary detection device comprises a sample absorber and a reactor, and the sulphur content in the tail gas is detected by adopting an iodometric titration detection method. The fine detection device is a detection device for detecting sulfur content by selecting an ion flow tube method and comprises an ion source, a flow tube area and a mass spectrometry detection area. The exhaust device comprises an exhaust emission assembly and an exhaust state display device, the exhaust emission assembly comprises an exhaust pipe and a chimney, the exhaust state display device comprises an emission sensor and a display, and the emission sensor is electrically connected with the display. And the detection assembly of the fine detection device transmits data to the control assembly after detecting a result, and the control assembly controls the electromagnetic valve and the timing stop valve according to the transmission data. The backflow pipe is communicated with a standby desulfurizing tower, and the standby desulfurizing tower is communicated with a weight detection pipe and an qualified outer discharge pipe.

One specific application of this embodiment is: the invention collects dust precipitated from flue gas generated by a smelting furnace smelting system through a lengthened flue through a dust collection cloth bag, then the dust is treated by a heat exchanger, a cooler, a dust remover and a desulphurization device to obtain treated tail gas, the tail gas treated by the dust remover is further dedusted by a pretreatment device on a primary detection pipeline, then the tail gas is collected by a sample collector according to the national standard, the sulfur content in the tail gas is detected by an iodometry method, the flue gas collection refers to GB/T13609, an absorber is used for collecting gas, a flue gas sample sequentially passes through a tail gas dedusting filter element, a quartz filter cylinder, a condensing device and XAD-2 resin, wherein the quartz filter cylinder collects dioxin in smoke dust, the condensing device is used for collecting dioxin in flue gas moisture, the XAD-2 resin adsorbs dioxin in aerosol, and then the sulfur content in the flue gas in the initial state is obtained through measurement and calculation, the sulfur content in the tail gas can be conveniently and accurately detected, and the desulfurization treatment control of the subsequent process is facilitated.

The tail gas desulfurized by the desulfurization device is simultaneously output to the exhaust pipe through the main exhaust pipe and the fine detection pipe, the tail gas is collected by the fine detection pipe and then sent to the SIFT detection device, required reaction ions are selected according to the requirements of an analysis object, the process is that optional gas is injected into a discharge area, ions (positive ions and negative ions) are generated by adopting high-voltage discharge, electron bombardment or microwave discharge, the ions are injected into a low-voltage mass spectrum area through an ion source outlet after being generated, ion selection is carried out by a quadrupole mass spectrometer, so that the required reaction ions are obtained, the initial ions pass through a small hole on an isolation disc and enter a flow pipe area under the driving of carrier gas, the length of the flow pipe depends on the pumping rate of a pump and the time required by the reaction process of the ions and neutral sample gas, the initial ions are injected and hooked according to a certain flow under the action of the carrier gas, the movement velocity distribution of the ions is quickly close to the Maxwellian velocity distribution of the, the flow tube is provided with a sample injection pipeline, the flow rate of the sample injection pipeline is controllable, and initial ions and sample molecules are subjected to collision in the flow tube to generate soft ionization and new ions. And in the mass spectrometry detection area, part of product ions enter the mass spectrometry area through a small hole, and are scanned by a second quadrupole mass spectrometer, and a product ion signal is received and amplified by the ion detector and is processed by a computer in real time, so that the aim of quantitatively analyzing the sulfur-containing gas is fulfilled under the condition that parameters such as the amplitude of the initial ion signal and the product ion signal, the reaction rate and the like are known. After sulfur content data are obtained through detection of a SIFT device, the sulfur content data are compared with national emission standards, the sulfur content data can be discharged if the sulfur content data reach the standard, an electromagnetic valve of a return pipe is opened if the sulfur content data do not reach the standard, the tail gas which does not reach the standard is prevented from being discharged into the atmosphere, the tail gas which does not reach the standard enters a standby desulfurizing tower through the return pipe, after further treatment, the tail gas which flows through a heavy monitoring pipe is output through an qualified outer pipe and the heavy monitoring pipe, the tail gas which flows through the heavy monitoring pipe is input into the SIFT detection device, is discharged after being re-detected to reach the standard, if the sulfur content data do not reach the standard, the electromagnetic valve of a main pipe is closed, and the tail gas is stopped, detected and repaired, or other measures are taken, the tail gas is detected by adopting a selective ion flow pipe method, real-time detection is realized, response is fast, the.

When the fine detection is carried out, a certain amount of tail gas is regularly discharged by opening through the timing stop valve of the fine detection pipe to be detected, and when the heavy detection pipe is started, the tail gas is regularly discharged by opening through the timing stop valve of the heavy detection pipe to be detected, and the timing stop valves of the heavy detection pipe and the fine detection pipe are staggered and opened, namely, the two detection are asynchronous and are alternately carried out without mutual influence. Qualified tail gas all discharges through blast pipe and chimney, and when having gas outgoing in the blast pipe, detect emission rate through the emission sensor who is equipped with on its pipeline, inside temperature etc. shows with digital form through the display, can directly perceivedly see the discharge state to real-time recording parameter makes things convenient for work regulation and control and supervision.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.