CN109141992A - Hydrogen sulfate ammonia sampling apparatus and method based on control condensation method - Google Patents
Hydrogen sulfate ammonia sampling apparatus and method based on control condensation method Download PDFInfo
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- CN109141992A CN109141992A CN201811254416.0A CN201811254416A CN109141992A CN 109141992 A CN109141992 A CN 109141992A CN 201811254416 A CN201811254416 A CN 201811254416A CN 109141992 A CN109141992 A CN 109141992A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
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Abstract
The present invention relates to a kind of hydrogen sulfate ammonia sampling apparatuses and method based on control condensation method.The condenser pipe access of the device is set in heat traced pipeline, and upper end is connected with air inlet pipe, it can realize that gradient temperature condenses using segmentation heat traced pipeline, lower end is connected with gas flowmeter and air pump, machine casing setting goes absorbing liquid to supply pump interface, condensed product on tube wall can be gone out after to be condensed and facilitate detection hydrogen sulfate ammonia content, it is all reserved before and after each section of heat tracing pipe to remove absorbing liquid entrance and exit, the disengaging of absorbing liquid is controlled by a branch switch, sample liquid containing condensed product is connected by another branch switch with sample liquid outlet, single-chip microcontroller is responsible for processing gas flow information and control power supply etc. as the central processing unit of machine, Temperature Treatment system is connect with heat tracing pipe, and temperature information is transferred to single-chip microcontroller, as a result it is shown by display screen on control panel, adjustment condensation process is controlled convenient for operator.High degree of automation of the present invention, measurement accuracy are high.
Description
Technical field
The present invention relates to hydrogen sulfate ammonia to sample field, samples more particularly to a kind of hydrogen sulfate ammonia based on control condensation method
Device and method.
Background technique
In China's energy resource structure, coal resources reach 60% or more using accounting, therefore clean, efficiently utilize coal,
Atmosphere pollution is controlled, a kind of common recognition of society is had become.In this context, national promulgation " thermal power plant in 2011
Atmosphere pollutants emission standards ", instead of original 03 standard, pollutant emission is required to improve, such as Fig. 1.It then proposes again ultralow
The technology of discharge.This technology is referred to using the efficient cooperation-removal of multiple pollutant, so that coal fired boiler of power plant atmosphere is dirty
Dye object concentration of emission complies fully with Gas Generator Set emission limit, it may be assumed that flue dust, sulfur dioxide, discharged nitrous oxides concentration are no more than
10mg/Nm3、35mg/Nm3、50mg/Nm3。
SCR method denitration is widely used technology in current minimum discharge transformation, but air preheater dust stratification is bright after being transformed
Aobvious, resistance increases, and influences the stable operation of equipment, there are larger hidden dangers.Think at this stage install additional SCR device after generate it is sticky
The ABS of shape is the major reason for leading to above-mentioned phenomenon.In addition, in underload denitration, the anti-SO2 capability study of middle low catalyst,
Researcher increasingly recognizes to study the importance of sulfate resistance deposition capability.Therefore, the formation mechanism for studying ABS, has
Help to solve the problems, such as in the stifled ash of minimum discharge denitration air preheater and underload denitration that low temperature catalyst puts into operation problem.At this stage, also
There is no direct ABS measuring technique, the proposition of the measurement method of ABS can also promote the research work of ABS.
Control condensation method is widely applied, but exposes some disadvantages in application process, influences its test essence
Degree, control condensation method disadvantage are summarized as follows:
Water bath with thermostatic control is not easy to execute-in-place, and there are scald and electrical short-circuit risks
The glass apparatus temporarily assembled is easy damaged, air-tightness and is difficult to ensure
System integration, the degree of automation are low, more demanding to operator.
Summary of the invention
The first technical problem to be solved by the present invention is to provide that a kind of integrated level is high, Variable Control precision is high, is easy to grasp
The hydrogen sulfate ammonia sampling apparatus based on control condensation method made.
It is as follows that the present invention solves technical solution used by above-mentioned technical problem:
Based on the hydrogen sulfate ammonia sampling apparatus of control condensation method, including the supply of admission line, heat traced pipeline group, absorbing liquid
Pump, branch switch I, single-chip microcontroller, control panel and controller, display, air pump, outlet line, gas flowmeter, sample liquid go out
Mouth, branch switch II, absorbing liquid supply pipe, temperature sensor, Temperature processor；The heat traced pipeline group and intake channel connect
It connects, heat tracing pipe group lower end is connected with gas flowmeter and air pump；The water inlet pipe is connected with absorbing liquid transfer pump, rear portion with
Branch switch I connection；Branch switch I, II are connect with every section of front and back of heat traced pipeline group, and wherein the rear portion branch switch II connects
Sample liquid outlet；The temperature sensor is respectively arranged inside three sections of heat tracing pipes, is connect by conducting wire with temperature information processor；
The gas flowmeter, control panel and controller, display, Temperature processor, branch switch I, branch switch II, air pump
It is connected respectively with single-chip microcontroller.
The present apparatus provides the temperature environment for being suitble to hydrogen sulfate ammonia condensing using heat traced pipeline, and cooperation temperature sensing system can essence
The really temperature of control condensation process, guarantees the condensation effect of hydrogen sulfate ammonia.
Preferably, heat traced pipeline group is horizontally disposed.It the advantage is that, gas time of contact within the condenser can be extended,
And be conducive to the flushing of absorbing liquid.
Preferably, using heat traced pipeline group the volume of heating region can be reduced as much as possible, and realize easy maintenance
Purpose, can realize accurate control to temperature by adjusting electric current using heating effect of current as the heat traced pipeline of heat production principle
System.
The second technical problem to be solved by the present invention is to provide a kind of sulfuric acid based on control condensation method efficiently, easy
The hydrogen ammonia method of sampling.
It is as follows that the present invention solves technical solution used by above-mentioned technical problem:
Based on the hydrogen sulfate ammonia method of sampling of control condensation method, include the following steps:
S1. instrument, which is powered, preheats simultaneously self-test:
S2. branch switch I, II to be closed, gas flowmeter is started, flow information is transferred to single-chip microcontroller and handled by flowmeter,
Heating temperature is set, and temperature sensing system starts therewith passes to single-chip microcontroller for temperature information, and actual temperature is waited to reach setting
Temperature；
S3. air pump is opened, intake channel is connected, is shown according to actual flow, adjusts air pump power, and then realize gas
Flow velocity degree is adjusted；
S4. after sample gas extracts, air inlet is disconnected, then successively closes flowmeter, air pump, heat traced pipeline group, to
Temperature reduces in managing, and selection needs the access absorbed, opens corresponding branch switch, while connection is closed between each heat tracing pipe,
Absorbing liquid transfer pump is opened, sample liquid is collected and waits for subsequent analysis；
S5. branch switch is adjusted to whole connections after absorbing, absorbing liquid is replaced with into deionized water and is rinsed centainly
Time closes branch switch, opens air pump and drying switch.
This method uses control condensation method, and by being arranged condenser pipe in heat traced pipeline, to make hydrogen sulfate ammonia
It can sufficiently condense in a device, and then improve sample effect.
Preferably, self-test project includes electric short circuit, carries out calibration and each component to gas flowmeter in step S1
Whether normal operation.It the advantage is that, avoid occurring the problems such as short circuit, leakage in sampling process, guarantee that sampled result is accurate
Property.
The present invention compared with the existing technology has the following advantages that and effect:
1. providing the environment temperature of hydrogen sulfate ammonia condensing using heat traced pipeline group due to of the invention, on the one hand just controlled with accurate
On the other hand condensation temperature processed reduces condensing unit volume.
2. can be realized automatic control since integration degree of the present invention is higher, glass instrument in traditional sampling method is avoided
Device is easy to damage, device air-tightness is lower and heating water bath is complicated for operation, the factors such as dangerous influence, and can be realized accurate, efficient
Hydrogen sulfate ammonia sampling operation.
3. improving and surveying since the present invention is conducive to improve absorption efficiency using absorbing liquid transfer pump pressure flush condensed product
Accuracy of measurement.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the device of the invention structural schematic diagram.
Label declaration:
1. 9. gas outlet of air inlet
2. 10. gas flowmeter of heat traced pipeline group
3. 11. sample liquid of absorbing liquid transfer pump exports
4. 12. branch switch II of branch switch I
5. 13. absorbing liquid supply pipe of single-chip microcontroller
6. 14. temperature sensor of control panel and controller
7. 15. Temperature processor of display
8. air pump
Specific embodiment
The present invention will be further described in detail below with reference to the embodiments, following embodiment be explanation of the invention and
The invention is not limited to following embodiments.
Embodiment 1:
As shown in Figure 1, the hydrogen sulfate ammonia sampling apparatus based on control condensation method of the present embodiment includes air inlet 1, heat tracing
Pipeline group 2, absorbing liquid liquid transfer pump 3, branch switch I 4, single-chip microcontroller 5, control panel and controller 6, display 7, air pump
8, gas outlet 9, gas flowmeter 10, sample liquid outlet 11, branch switch II 12, absorbing liquid supply pipe 13, temperature sensor 14,
Temperature processor 15.
On absorbing liquid supply pipe 13 be arranged branch switch I 4, branch switch I 4 can control three heat tracing pipes respectively with absorption
Liquid supply pipe 13 is communicated or is disconnected, and realizes that three heat tracing pipes can mutually disconnect connection.
Air pump 8 is arranged on 1 place access of air inlet, and sample gas is extracted out and controls flowing of the sample gas in condensation pass
Speed guarantees condensation effect.
Temperature sensor 14 is connect with Temperature processor 15, and temperature information in pipe is converted electric signal by temperature sensor 14
It is transferred to Temperature processor 15, individually setting up Temperature processor 15 is to reduce the data processing amount of single-chip microcontroller 5 and guarantee temperature
Information can be converted at the first time.
Single-chip microcontroller 5 respectively with control panel and controller 6, display 7, gas flowmeter 10, Temperature processor 15, air
To realize automatic control, digital signal obtained by detector can pass through list for pump 8, branch switch I 4, the connection of branch switch II 12
Piece machine 5, which carries out being converted to corresponding physical quantity, to be presented on display screen 7.So that the present embodiment integration degree is higher, it is able to achieve
It automatically controls, avoids the complicated for operation, disadvantages such as precision is low in traditional sampling method, realize accurate, efficient hydrogen sulfate ammonia sampling
Operation.
Gas flowmeter 10 is set on 1 place access of air inlet and is able to detect gas flow, is allowed the operator at any time
Condensation rate is adjusted according to the actual situation.
Heat traced pipeline group 2 can provide any three isoperibols within the scope of 150 DEG C -350 DEG C, thus realize temperature step,
It is separated while realizing different material, improves condensation efficiency.
The hydrogen sulfate ammonia method of sampling based on control condensation method of the present embodiment, includes the following steps:
S1. instrument, which is powered, preheats simultaneously self-test；
S2. branch switch I, II to be closed, gas flowmeter is started, flow information is transferred to single-chip microcontroller and handled by flowmeter,
Heating temperature is set, and temperature sensing system starts therewith passes to single-chip microcontroller for temperature information, and actual temperature is waited to reach setting
Temperature；
S3. air pump is opened, intake channel is connected, is shown according to actual flow, adjusts air pump power, and then realize gas
Flow velocity degree is adjusted；
S4. after sample gas extracts, air inlet is disconnected, then successively closes flowmeter, air pump, heat traced pipeline group, to
Temperature reduces in managing, and selection needs the access absorbed, opens corresponding branch switch, while connection is closed between each heat tracing pipe,
Absorbing liquid transfer pump is opened, sample liquid is collected and waits for subsequent analysis；
S5. branch switch is adjusted to whole connections after absorbing, absorbing liquid is replaced with into deionized water and is rinsed centainly
Time closes branch switch, opens air pump and drying switch.
In above-mentioned steps S1, self-test project include electric short circuit, to gas flowmeter carry out calibration and each component whether
It operates normally.Device refer mainly to heat traced pipeline group 2, absorbing liquid liquid transfer pump 3, branch switch I 4, single-chip microcontroller 5, control panel and
Controller 6, display 7, air pump 8, gas flowmeter 10, branch switch II 12, temperature sensor 14, Temperature processor
15。
By control condensation method, by the hydrogen sulfate ammonia in flue gas, all condensation is attached to an edition inner wall for hot pipeline group to the present invention
On, and dripped by the hydrogen sulfate ammoniacal liquor that absorbing liquid fully absorbs condensation, hydrogen sulfate ammonia content is obtained to subsequent analysis.Branch switch
It can control three heat tracing pipes to communicate or disconnect with absorbing liquid supply pipe respectively, and realize that three heat tracing pipes can mutually disconnect connection.
Without human intervention using singlechip technology, system integration degree is high, it is only necessary to acquire sample liquid, greatly improve system oneself
Dynamicization operation degree, obtains associated sample data in combination with LCD technology in real time.The present invention overcomes conventional method systems
System the disadvantage that structure is complicated, cumbersome, system stability is low, realizes accurate, the high-efficient homework of the sampling of hydrogen sulfate ammonia, to grinding
The hydrogen sulfate ammonia density for studying carefully SCR denitration equipment has realistic meaning.
Finally, it should be noted that the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different.The equivalent or simple change that all structure, feature and principles described according to the invention patent design are done, is wrapped
It includes in the scope of protection of the patent of the present invention.Those skilled in the art can be to described specific implementation
Example is done various modifications or additions or is substituted in a similar manner, and without departing from structure of the invention or surmounts this
Range as defined in the claims, is within the scope of protection of the invention.
Claims (7)
1. a kind of hydrogen sulfate ammonia sampling apparatus based on control condensation method, it is characterized in that: including admission line, heat traced pipeline group,
Absorbing liquid transfer pump, branch switch I, single-chip microcontroller, control panel and controller, display, air pump, outlet line, gas stream
Meter, sample liquid outlet, branch switch II, absorbing liquid supply pipe, temperature sensor, Temperature processor；The heat traced pipeline group with
Intake channel connection, heat tracing pipe group lower end is connected with gas flowmeter and air pump；The water inlet pipe and absorbing liquid transfer pump
It is connected, rear portion is connect with branch switch I；Branch switch I, II are connect with every section of front and back of heat traced pipeline group, and wherein branch is opened
Close the connection sample liquid outlet of the rear portion II；The temperature sensor is respectively arranged inside three sections of heat tracing pipes, is believed by conducting wire and temperature
Cease processor connection；The gas flowmeter, control panel and controller, display, branch switch I, air pump, branch switch
II, Temperature processor are connected with single-chip microcontroller respectively.
2. the hydrogen sulfate ammonia sampling apparatus according to claim 1 based on control condensation method, it is characterized in that: the heat tracing
Each section of pipeline group is horizontal load, and adjacent two sections are to be vertically arranged arrangement, and connected with common quartzy bend pipe pipe.
3. the hydrogen sulfate ammonia sampling apparatus according to claim 1 based on control condensation method, it is characterized in that: the heat tracing pipe
Line group can provide any three isoperibols within the scope of 150 DEG C -350 DEG C, to realize temperature step.
4. the hydrogen sulfate ammonia sampling apparatus according to claim 1 based on control condensation method, it is characterized in that: the heat tracing pipe
Line adjusts the size of current in wherein heating tape by control panel and controller and realizes that temperature is adjustable.
5. the hydrogen sulfate ammonia sampling apparatus according to claim 1 based on control condensation method, it is characterized in that: the temperature passes
Sensor and Temperature processor constitute temperature sensing system, and temperature information in pipe is transferred to single-chip microcontroller processing and is finally presented to aobvious
In display screen.
6. the hydrogen sulfate ammonia sampling apparatus according to claim 1 based on control condensation method, it is characterized in that: the absorbing liquid
Transfer pump, two branch switches form condensed product absorption system, can go out in-tube condensation product, and convenient next measurement contains
Amount.
7. a kind of hydrogen sulfate ammonia method of sampling based on control condensation method, it is characterized in that: based on any one of claim 1 to 6 institute
The hydrogen sulfate ammonia sampling apparatus based on control condensation method stated, includes the following steps:
S1. instrument, which is powered, preheats simultaneously self-test；
S2. branch switch I, II are closed, gas flowmeter is started, flow information is transferred to single-chip microcontroller and handled by flowmeter, setting
Heating temperature, temperature sensing system starts therewith passes to single-chip microcontroller for temperature information, and actual temperature is waited to reach setting temperature；
S3. air pump is opened, intake channel is connected, is shown according to actual flow, adjusts air pump power, and then realize gas velocity
Degree is adjusted；
S4. after sample gas extracts, air inlet is disconnected, flowmeter, air pump, heat traced pipeline group are then successively closed, in pipe
Temperature reduces, and selection needs the access absorbed, opens corresponding branch switch, while connection is closed between each heat tracing pipe, opens
Absorbing liquid transfer pump collects sample liquid and waits for subsequent analysis；
S5. branch switch is adjusted to whole connections after absorbing, absorbing liquid is replaced with into deionized water and rinses certain time,
Branch switch is closed, air pump and drying switch are opened.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811254416.0A CN109141992A (en) | 2018-10-16 | 2018-10-16 | Hydrogen sulfate ammonia sampling apparatus and method based on control condensation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811254416.0A CN109141992A (en) | 2018-10-16 | 2018-10-16 | Hydrogen sulfate ammonia sampling apparatus and method based on control condensation method |
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| CN206020115U (en) * | 2016-08-02 | 2017-03-15 | 华电电力科学研究院 | A kind of portable sulfur trioxide sampling apparatuses based on control condensation method |
| CN207600810U (en) * | 2017-12-28 | 2018-07-10 | 安徽蓝盾光电子股份有限公司 | A kind of multidraw mechanism for CEMS systems |
| CN210719861U (en) * | 2018-10-16 | 2020-06-09 | 华北电力大学（保定） | Ammonium bisulfate sampling device based on condensation control method |
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2018
- 2018-10-16 CN CN201811254416.0A patent/CN109141992A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015027546A1 (en) * | 2013-08-27 | 2015-03-05 | 浙江大学 | Online detection device and method for sulfur trioxide contained in flue gas |
| CN105004761A (en) * | 2015-06-26 | 2015-10-28 | 华电电力科学研究院 | Denitration system escaping ammonia on-line continuous monitoring device and method |
| CN106289883A (en) * | 2016-08-02 | 2017-01-04 | 华电电力科学研究院 | Based on the portable sulfur trioxide sampling apparatus and the method that control condensation method |
| CN206020115U (en) * | 2016-08-02 | 2017-03-15 | 华电电力科学研究院 | A kind of portable sulfur trioxide sampling apparatuses based on control condensation method |
| CN207600810U (en) * | 2017-12-28 | 2018-07-10 | 安徽蓝盾光电子股份有限公司 | A kind of multidraw mechanism for CEMS systems |
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