CN204731216U - SCR catalyst active testing system - Google Patents
SCR catalyst active testing system Download PDFInfo
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- CN204731216U CN204731216U CN201520307915.7U CN201520307915U CN204731216U CN 204731216 U CN204731216 U CN 204731216U CN 201520307915 U CN201520307915 U CN 201520307915U CN 204731216 U CN204731216 U CN 204731216U
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- gas
- sampling unit
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Abstract
The utility model provides a kind of SCR catalyst active testing system, comprising: distribution reaction structure, control structure and electric device; Distribution reaction structure comprises gas sampling portion, water vapour generating unit, the gas and vapor permeation portion that is connected respectively with the output terminal of described water vapour generating unit and the output terminal pipeline in described gas sampling portion, and with the output terminal in gas and vapor permeation portion in turn pipeline be connected preheating part, reacting part and analytical sampling portion; Electric device comprises many conducting circuits, overheating warning unit and protection circuit unit, the electric output terminal in gas sampling portion is connected via wire with flow controlling unit, and preheating part, reacting part and water vapour generating unit are all connected with temperature control unit by wire; Water vapour generating unit is connected with pump start and stop unit by wire.This device have can operating temperature high, the catalyst activity measured is accurate; Device reaches the time shorten of balance, the feature that security performance is high.
Description
Technical field
The utility model belongs to SCR catalyst production field, is specifically related to a kind of SCR catalyst active testing system.
Background technology
Due to mankind's activity and economic fast development, China's environment is seriously damaged, extreme climate showed increased, serious threat is caused to people's life and property, heavy losses are caused to country, hinder the sustainable development of national economy, country has also paid huge cost in order to Environment control simultaneously.
The current discharged nitrous oxides total amount of China is more than 1,800 ten thousand tons, if do not take effective control measure, continuation increases by Future Ten 5 years Chinese nitrogen oxide emissions, may reach more than 3,000 ten thousand tons to the year two thousand twenty.China is coal-fired big country, and coal-burning power plant is the primary emission source of oxides of nitrogen, accounts for 40% of total amount, will become the first batch of control object of country.
Honeycomb ceramics SCR denitration Main Function is by the NO in discharging waste gas
xconvert nitrogen and water vapor to, to reach environmental emission standard.
SCR device is usually primarily of two large main body compositions: remove agent preparation system and reactor body.By spraying into reactant NH in reactor
3, NOx is reduced to nitrogen.Because this reduction reaction is comparatively responsive to temperature, therefore catalyzer need be added with intensified response activity, meet the temperature requirement of reaction.
Microreactor catalyst performance proving installation general at present has following shortcoming: (1) due to reactor be stainless steel, visual poor; (2) because reactor and primary heater are stainless steel, stainless steel material can have catalytic action to reaction simulation flue gas at reaction conditions, truly can not reflect the reactivity of catalyzer, and test is active higher; (3) because stainless steel material has comparatively significantly metal atoms migrate phenomenon when temperature is higher than 500 degrees Celsius, minisize reaction performance testing device general is at present after hot conditions test, can be there is screw thread bonding phenomenon in the connecting screw of stainless steel reactor, cause reactor to be scrapped; (4) because stainless steel material can react with sulphuric dioxide under hot humid conditions, cause the primary heater of microreactor catalyst performance proving installation general at present and reactor corrosion serious, so do not pass into sulphuric dioxide during the reactivity worth of usual detecting catalyst, this will cause the active and actual condition of catalyst test to have deviation; (5) there is larger thermal loss; (6) do not have to arrange the overheating warning unit that gives the alarm and the protection circuit unit of automatic shutdown circuit when short circuit, there is potential safety hazard.
Utility model content
The purpose of this utility model is now to provide a kind of SCR catalyst active testing system, solve test active higher, reactor lifetime is short, power consumption is large, thermal loss and security hidden trouble.
A kind of SCR catalyst active testing system, comprising: distribution reaction structure, control structure and electric device; Wherein,
Described distribution reaction structure comprises gas sampling portion, water vapour generating unit, the gas and vapor permeation portion that is connected respectively with the output terminal of described water vapour generating unit and the output terminal pipeline in described gas sampling portion, and with the output terminal in described gas and vapor permeation portion in turn pipeline be connected preheating part, reacting part and analytical sampling portion; Described analytical sampling portion comprises gas analyzer and operation valve, and described gas analyzer is connected with the outlet side of described reacting part, and described operation valve is connected between the entrance of described gas analyzer and the outlet side of described reacting part, for control gas path on-off; Described electric device is for the connection line of distribution reaction structure and control structure described in conducting, also comprise when temperature of reaction more than the overheating warning unit given the alarm during a preset value and when temperature is too high the protection circuit unit of automatic shutdown circuit, the electric output terminal in described gas sampling portion is connected via wire with flow controlling unit, and described preheating part, described reacting part and described water vapour generating unit are all connected with temperature control unit by wire; Described water vapour generating unit is connected with described pump start and stop unit by wire.
Preferably, described control structure also comprises a processes and displays unit, and described processes and displays unit is connected with flow controlling unit, temperature control unit and pump start and stop unit wire respectively.
Preferably, described gas sampling portion comprises N
2gas sampling unit, O
2gas sampling unit, NO gas sampling unit, SO
2gas sampling unit, CO
2gas sampling unit and NH
3gas sampling unit; The steam generator that described water vapour generating unit comprises volume pump and is connected with described volume pump; Described N
2gas sampling unit, O
2gas sampling unit, NO gas sampling unit, SO
2gas sampling unit, CO
2gas sampling unit is all connected with steam generator and gas and vapor permeation portion pipeline; Also comprise NH
3flow control structure, described NH
3flow control structure is connected with gas mixer pipeline.
Preferably, described gas sampling portion comprises N
2gas sampling unit, O
2gas sampling unit, NO gas sampling unit, SO
2gas sampling unit, CO
2gas sampling unit and NH
3gas sampling unit; The steam generator that described water vapour generating unit comprises volume pump and is connected with described volume pump; Described N
2gas sampling unit, O
2gas sampling unit, NO gas sampling unit, SO
2gas sampling unit, CO
2gas sampling unit and described NH
3flow control structure is all connected with gas mixer pipeline.
Preferably, described N
2gas sampling unit, O
2gas sampling unit, NO gas sampling unit, SO
2gas sampling unit and NH
3gas sampling unit includes the first ball valve, filtrator, gas pressure reducer and the second ball valve that pipeline in turn connects.
Preferably, the two ends of described flow controlling unit are respectively provided with tensimeter, and two manometric pressure differentials are 3 to 5 kilograms.
Preferably, described preheating part comprises a screw thread column primary heater and a primary heater heating furnace, and described primary heater heating furnace comprises the pre-heat through-hole of a cylindrical shape, and described screw thread column primary heater is arranged in described pre-heat through-hole; Described reacting part comprises a right cylinder reactor and a reactor heating furnace, and what described reactor heating furnace comprised a cylindrical shape adds heat through-hole, and add described in described reactor is arranged in heat through-hole, the inside of described reactor is provided with catalyst filled tubes.
Preferably, described gas and vapor permeation portion, gas preheater and catalyst filled tubes are quartz glass tube.
Preferably, described flow controlling unit is arranged between the second ball valve and gas and vapor permeation portion.
SCR catalyst active testing system provided by the utility model, device can operating temperature high, because quartz glass is to the chemical inertness of simulated flue gas, the catalyst activity measured is relatively on the low side, but more close to actual value; Because preheating section and catalyst reaction section are independently two structures, reaction is more abundant, can improve the accuracy of active testing; Device reaches the time shorten of balance, is conducive to energy-conservation.Be provided with the overheating warning unit that gives the alarm and the protection circuit unit of automatic shutdown circuit when short circuit, security performance is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model SCR catalyst active testing system;
Fig. 2 is the frame diagram of control structure in the utility model SCR catalyst active testing system;
Fig. 3 is the frame diagram of electric device in the utility model SCR catalyst active testing system.
Embodiment
For the benefit of to the understanding of structure of the present utility model, be described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of the utility model SCR catalyst active testing system, Fig. 2 is the frame diagram of control structure in the utility model SCR catalyst active testing system, and Fig. 3 is the frame diagram of electric device in the utility model SCR catalyst active testing system.Shown in composition graphs 1 to Fig. 3, the utility model provides a kind of SCR catalyst active testing system, comprises interconnective distribution reaction structure 10, control structure 20 and electric device 30.
Described distribution reaction structure comprises gas sampling portion 11, water vapour generating unit 12, the gas and vapor permeation portion 13 be connected respectively with the output terminal of described water vapour generating unit, the output terminal pipeline in described gas sampling portion, and with the output terminal in described gas and vapor permeation portion 13 in turn pipeline be connected preheating part 14, reacting part 15 and analytical sampling portion 16.
Further, described gas sampling portion 11 comprises N2 gas sampling unit 111, O2 gas sampling unit 112, NO gas sampling unit 113, SO2 gas sampling unit 114, CO2 gas sampling unit and NH3 gas sampling unit 115.In the present embodiment, CO2 gas sampling unit and N2 gas sampling unit 111 are can two unit of equivalent replacement, an optional setting distribution reaction can be carried out in both, also CO2 gas sampling unit and N2 gas sampling unit 111 can be added gas sampling portion 11 simultaneously, as shown in Figure 1, only be provided with N2 gas sampling unit 111 in Fig. 1, CO2 gas sampling unit is not set, but setting does not affect last reaction result like this.The steam generator that described water vapour generating unit 12 comprises volume pump and is connected with described volume pump.Described gas sampling portion 11 has two kinds of embodiments, embodiment 1: described N2 gas sampling unit 111, O2 gas sampling unit 112, NO gas sampling unit 113, SO2 gas sampling unit 114, CO2 gas sampling unit are all connected with steam generator and gas and vapor permeation portion 13 pipeline, and described NH3 flow control structure 115 is connected with gas and vapor permeation portion 13 pipeline.Embodiment 2: as shown in Figure 1, described N2 gas sampling unit 111, O2 gas sampling unit 112, NO gas sampling unit 113, SO2 gas sampling unit 114, CO2 gas sampling unit and described NH3 flow control structure 115 are all connected with gas and vapor permeation portion 13 pipeline.
Further, described preheating part 14 comprises primary heater 141 and a primary heater heating furnace 142 of a screw thread column, and described primary heater heating furnace 142 comprises the pre-heat through-hole of a cylindrical shape, and described screw thread column primary heater 141 is arranged in described pre-heat through-hole; Described reacting part 15 comprises right cylinder reactor 151 and a reactor heating furnace 152, what described reactor heating furnace 152 comprised a cylindrical shape adds heat through-hole, add in heat through-hole described in described reactor 151 is arranged at, the inside of described reactor 151 is provided with catalyst filled tubes.Described analytical sampling portion 16 comprises gas analyzer 161 and operation valve 162, described gas analyzer is connected with the outlet side of described reacting part, described operation valve is connected between the entrance of described gas analyzer and the outlet side of described reacting part, for control gas path on-off.In addition, in practice, described gas and vapor permeation portion 13, gas preheater 141 and catalyst filled tubes are quartz glass tube.In addition, in order to reach better pre-heat effect, one second preheating part can be added again between preheating part 14 and reacting part 15, making pre-heat effect better.
Described control structure 20 comprises flow controlling unit 21, temperature control unit 22, pump start and stop unit 23.Further, described control structure 20 also comprises a processes and displays unit 24, and described processes and displays unit 24 is connected with flow controlling unit 21, temperature control unit 22 and pump start and stop unit 23 wire respectively, for controlling and showing flow and temperature data.In the present embodiment, described N2 gas sampling unit 111, O2 gas sampling unit 112, NO gas sampling unit 113, SO2 gas sampling unit 114, CO2 gas sampling unit and NH3 gas sampling unit 115 include the first ball valve, filtrator, gas pressure reducer and the second ball valve that pipeline in turn connects.Described flow controlling unit 21 is arranged between the second ball valve and gas and vapor permeation portion 13.In addition, it should be noted that the two ends of described flow controlling unit 21 are respectively provided with tensimeter, two manometric pressure differentials are 3 to 5 kilograms, can normally work in order to the flowmeter in guaranteed flow control module.
Described electric device 30 is for the connection line of distribution reaction structure described in conducting 10 with control structure 20, also comprise when temperature of reaction more than the overheating warning unit 31 given the alarm during a preset value and when temperature is too high the protection circuit unit 32 of automatic shutdown circuit, the electric output terminal in described gas sampling portion 11 is connected via wire with flow controlling unit 21, and described preheating part 14, described reacting part 15 and described water vapour generating unit 12 are all connected with temperature control unit 22 by wire; Described water vapour generating unit 12 is connected with described pump start and stop unit 23 by wire.
Described overheating warning unit 31 comprises temperature sensor 311, the data reception module 312 be connected with described temperature sensor 311, the data processing module 313 be connected with described data reception module 312 and described data processing module 313 and detects that module 314 is disposed in the early warning that Current Temperatures gives the alarm when exceeding preset value.Described protection circuit unit 32 connects early warning and disposes module 314, and when sending warning, described protection circuit unit cuts off circuit.
Now the concrete operations details of a kind of SCR catalyst active testing system that the utility model provides is described in detail.
Nitrogen behind described gas sampling portion 11 by gas and vapor permeation portion gas 13 that pipeline flow into.Liquid water is pumped into the liquid water entrance of steam generator according to setting flow by plunger type metering pump.Liquid water arrives in the generator body of steam generator fast, equably, and directly and heating rod surface contact and fast vaporizing, outlet temperature is 400 DEG C to liquid water.Water vapour and gas sampling portion measure the nitrogen monoxide, ammonia, sulphuric dioxide, carbon dioxide, oxygen and the nitrogen that flow out and converge at gas and vapor permeation portion leading portion, are 200 DEG C by the temperature of the simulated flue gas behind gas and vapor permeation portion 13.Simulated flue gas, in the air preheat pipe of primary heater 141, then arrives in the reactor 151 of reacting part and reacts.The catalyst filled tubes of reactor and the economizer bank of primary heater all adopt quartz, and the connection sealing between this quartz is existing by the cause for gossip of GB 28# pot mill.Catalyst filled tubes space residing for catalyzer of reactor 151, makes reaction bed temperature remain on 380 DEG C by the reacting furnace heating-up temperature controlling its surrounded.Finally, sample is taken out from Catalyst packing pipe tail end by a tee ball valve selectivity by analytical sampling portion 16, then the gas of taking-up is delivered to flue gas analyzer analysis.
The alarm temperature preset value of beds alarm temperature is set to 400 DEG C, heighten preheating furnace 142 heating-up temperature, time reaction bed temperature is higher than 400 DEG C, trigger temperatures alarm unit 31, the temperature sensor 311 of described overheating warning unit 31 is responded to and collects temperature data, temperature data receive by data reception module 312, and be sent to the data processing module 313 be connected with described data reception module 312, described data processing module 313 detects that module 314 is disposed in the early warning that Current Temperatures gives the alarm when exceeding preset value, described early warning is disposed module 314 and is connected protection circuit unit 32, control instrument is by warning output port trigger relay, system shutdown heating power supply, cut off source of the gas, alarm is opened.Certainly, warning module is not limited to temperature pre-warning one, and this nitrogen monoxide, ammonia, sulphuric dioxide, oxygen flux control point also can have flow super large or alarm mechanism less than normal.
In the present embodiment, steam exit temperature is 450 DEG C, preheating part 14 temperature 390 DEG C, reacting part 15 temperature 380 DEG C, and device reaches equilibrium state and takes 90 minutes.In the present embodiment, reactor 151 porch nitric oxide concentration is 180ppm, ammonia 180ppm, oxygen 2.00%, sulphuric dioxide 100ppm; Reactor 151 exit nitric oxide concentration is 95ppm, ammonia 89ppm, oxygen 1.97%, sulphuric dioxide 97ppm, conversion of nitric oxide gas rate 47.2%.
Below embodiment has been described in detail the utility model by reference to the accompanying drawings, and those skilled in the art can make many variations example to the utility model according to the above description.Thus, some details in embodiment should not formed restriction of the present utility model, the utility model by the scope that defines using appended claims as protection domain.
Claims (9)
1. a SCR catalyst active testing system, is characterized in that, comprising: distribution reaction structure, control structure and electric device; Wherein,
Described distribution reaction structure comprises gas sampling portion, water vapour generating unit, the gas and vapor permeation portion that is connected respectively with the output terminal of described water vapour generating unit and the output terminal pipeline in described gas sampling portion, and with the output terminal in described gas and vapor permeation portion in turn pipeline be connected preheating part, reacting part and analytical sampling portion; Described analytical sampling portion comprises gas analyzer and operation valve, and described gas analyzer is connected with the outlet side of described reacting part, and described operation valve is connected between the entrance of described gas analyzer and the outlet side of described reacting part, for control gas path on-off;
Described control structure comprises flow controlling unit, temperature control unit, pump start and stop unit;
Described electric device is used for the connection line of distribution reaction structure and control structure described in conducting, also comprise when temperature of reaction more than the overheating warning unit given the alarm during a preset value and when temperature is too high the protection circuit unit of automatic shutdown circuit, the electric output terminal in described gas sampling portion is connected via wire with flow controlling unit, and described preheating part, described reacting part and described water vapour generating unit are all connected with temperature control unit by wire; Described water vapour generating unit is connected with described pump start and stop unit by wire.
2. SCR catalyst active testing system according to claim 1, is characterized in that, described control structure also comprises a processes and displays unit, and described processes and displays unit is connected with flow controlling unit, temperature control unit and pump start and stop unit wire respectively.
3. SCR catalyst active testing system according to claim 2, is characterized in that, described gas sampling portion comprises N
2gas sampling unit, O
2gas sampling unit, NO gas sampling unit, SO
2gas sampling unit, CO
2gas sampling unit and NH
3gas sampling unit;
The steam generator that described water vapour generating unit comprises volume pump and is connected with described volume pump;
Described N
2gas sampling unit, O
2gas sampling unit, NO gas sampling unit, SO
2gas sampling unit CO
2gas sampling unit is all connected with steam generator and gas and vapor permeation portion pipeline; Also comprise NH
3flow control structure, described NH
3flow control structure is connected with gas mixer pipeline.
4. SCR catalyst active testing system according to claim 2, is characterized in that, described gas sampling portion comprises N
2gas sampling unit, O
2gas sampling unit, NO gas sampling unit, SO
2gas sampling unit, CO
2gas sampling unit and NH
3gas sampling unit;
The steam generator that described water vapour generating unit comprises volume pump and is connected with described volume pump;
Described N
2gas sampling unit, O
2gas sampling unit, NO gas sampling unit, SO
2gas sampling unit, CO
2gas sampling unit and described NH
3flow control structure is all connected with gas mixer pipeline.
5. the SCR catalyst active testing system according to claim 3 or 4, is characterized in that, described N
2gas sampling unit, O
2gas sampling unit, NO gas sampling unit, SO
2gas sampling unit, CO
2gas sampling unit and NH
3gas sampling unit includes the first ball valve, filtrator, gas pressure reducer and the second ball valve that pipeline in turn connects.
6. SCR catalyst active testing system according to claim 5, it is characterized in that, the two ends of described flow controlling unit are respectively provided with tensimeter, and two manometric pressure differentials are 3 to 5 kilograms.
7. SCR catalyst active testing system according to claim 6, it is characterized in that, described preheating part comprises a screw thread column primary heater and a primary heater heating furnace, described primary heater heating furnace comprises the pre-heat through-hole of a cylindrical shape, and described screw thread column primary heater is arranged in described pre-heat through-hole;
Described reacting part comprises a right cylinder reactor and a reactor heating furnace, and what described reactor heating furnace comprised a cylindrical shape adds heat through-hole, and add described in described reactor is arranged in heat through-hole, the inside of described reactor is provided with catalyst filled tubes.
8. SCR catalyst active testing system according to claim 7, is characterized in that, described gas and vapor permeation portion, gas preheater and catalyst filled tubes are quartz glass tube.
9. SCR catalyst active testing system according to claim 8, it is characterized in that, described flow controlling unit is arranged between the second ball valve and gas and vapor permeation portion.
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| CN201520307915.7U CN204731216U (en) | 2015-05-13 | 2015-05-13 | SCR catalyst active testing system |
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|---|---|---|---|
| CN201520307915.7U CN204731216U (en) | 2015-05-13 | 2015-05-13 | SCR catalyst active testing system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548305A (en) * | 2016-03-08 | 2016-05-04 | 中国科学院过程工程研究所 | Automatic device for measuring sulfur dioxide capacity of active coke with continuous method |
| CN106404984A (en) * | 2016-08-27 | 2017-02-15 | 华电电力科学研究院 | Equal-length middle-sized flue gas denitrification catalyst performance detection device and detection method |
| CN107356701A (en) * | 2017-08-08 | 2017-11-17 | 国电环境保护研究院 | Example boat flange extends out the type SCR denitration device for detecting activity that declines |
| CN108426975A (en) * | 2018-05-15 | 2018-08-21 | 东莞诺维新材料科技有限公司 | A kind of catalyst activity evaluating apparatus |
| CN109799312A (en) * | 2018-12-11 | 2019-05-24 | 中国矿业大学 | A kind of simulator and method of low-temperature oxidation of coal |
-
2015
- 2015-05-13 CN CN201520307915.7U patent/CN204731216U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548305A (en) * | 2016-03-08 | 2016-05-04 | 中国科学院过程工程研究所 | Automatic device for measuring sulfur dioxide capacity of active coke with continuous method |
| CN106404984A (en) * | 2016-08-27 | 2017-02-15 | 华电电力科学研究院 | Equal-length middle-sized flue gas denitrification catalyst performance detection device and detection method |
| CN106404984B (en) * | 2016-08-27 | 2018-09-11 | 华电电力科学研究院 | The isometric medium-sized catalyst for denitrating flue gas device for detecting performance of one kind and detection method |
| CN107356701A (en) * | 2017-08-08 | 2017-11-17 | 国电环境保护研究院 | Example boat flange extends out the type SCR denitration device for detecting activity that declines |
| CN108426975A (en) * | 2018-05-15 | 2018-08-21 | 东莞诺维新材料科技有限公司 | A kind of catalyst activity evaluating apparatus |
| CN108426975B (en) * | 2018-05-15 | 2023-12-26 | 东莞诺维新材料科技有限公司 | Catalyst activity evaluation device |
| CN109799312A (en) * | 2018-12-11 | 2019-05-24 | 中国矿业大学 | A kind of simulator and method of low-temperature oxidation of coal |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20210513 |