CN204841401U - Be applied to additive device of SNCR flue gas denitration system - Google Patents
Be applied to additive device of SNCR flue gas denitration system Download PDFInfo
- Publication number
- CN204841401U CN204841401U CN201520382419.8U CN201520382419U CN204841401U CN 204841401 U CN204841401 U CN 204841401U CN 201520382419 U CN201520382419 U CN 201520382419U CN 204841401 U CN204841401 U CN 204841401U
- Authority
- CN
- China
- Prior art keywords
- branch road
- additive solution
- additive
- flue gas
- main line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model provides a be applied to additive device of SNCR flue gas denitration system, include: an additive solution main line is including branch road anterior segment pipeline and branch road rear end pipeline, connect in parallel two at least additive solution branch roads between branch road anterior segment pipeline and the branch road rear end pipeline, branch road tip pipe way is provided with a set of accuse and flows the subassembly, branch road rear end pipeline is provided with a set of monitoring subassembly, every additive solution branch road all is provided with a filter. Following beneficial effect has: function concentration degree is high, and flow control is more clear, makes things convenient for engineering application, can real -time supervision module dynamic condition, additive solution flow volume in time according to actual need is adjusted, the controllable degree height, can accomplish that one uses fully, how to use fully or be how multi -purpose fully, can in time switch that improve the operating stability of system, the branch road is provided with filter, evacuation bypass ball valve and check valve, effectively guarantees the operation of the safe and reliable of system when breaking down.
Description
Technical field
The utility model relates to gas denitrifying technology field, is specifically related to a kind of additive device being applied to SNCR flue gas denitrification system.
Background technology
Nitrogen oxide (NOx) is a kind of common atmosphere pollution, and its discharge capacity presents the trend raised year by year.Discharged nitrous oxides control measure conventional at present comprise Combustion Process Control and denitrating flue gas, in multiple denitration technology, SNCR (SNCR) technology, as one wherein, has and installs transformation feature simple, with low cost, more and more applied.
The principle of SNCR technology is region ammonia reducing agent being sprayed into 850 ~ 1050 DEG C, burner hearth, is N by the reduction of nitrogen oxide in flue gas
2.The reducing agent that SNCR gas denitrifying technology is conventional is ammonia and urea.In experimental study, the denitration efficiency of SNCR technology can reach 80 ~ 90%; But in Practical Project, be limited by the various factors such as the limitation that reaction temperature interval changes, reducing agent mixes with smoke contacts, SNCR technology is applied to the denitration efficiency that CFBB can reach and is only about 60%, and the denitration efficiency being applied to coal-powder boiler is less than 40%.
The denitration effect improving SNCR technology can adopt the method for additive, is mixed by additive to spray into denitration region and react with reducing agent.Additive effectively can improve the impact of temperature on denitration efficiency, and can widen temperature window, reduce reaction temperature, additive can also reduce ammonia slip levels, makes SNCR technology better meet engineer applied requirement.
Some patents are had at present: patent 200810102373.4 proposes a kind of SNCR denitration method being additive with microfine coal, natural gas or synthesis gas for SNCR additive, the SNCR denitration method that it is additive that patent 201410040857.6, patent 200810209608.X propose with hydrogen and biomass gasified gas respectively, although above-mentioned patent proposes the type of additive, but because lacking the introduction of concrete interpolation equipment, cannot Practical Project be directly applied to; Although patent 201210300879.2 and patent 201210327034.2 give comparatively concrete SNCR additive relevant device and flow process; but design comparatively simple; do not consider the complex conditions of practical application, lack the available protecting to equipment, require further improvement.
Utility model content
For the deficiency that existing SNCR flue gas denitrification system additive relevant device exists, the purpose of this utility model is to provide one and can realizes real time measure, accurately control, and is provided with the SNCR system additive device of spare duct.
For achieving the above object, the utility model takes following technical scheme:
Be applied to an additive device for SNCR flue gas denitrification system, comprise:
One additive solution main line, comprises branch road leading portion pipeline and branch road rear end pipeline;
Be connected in parallel at least two additive solution branch roads between described branch road leading portion pipeline and branch road rear end pipeline;
Described branch road front end pipeline is provided with one group of flow control assembly;
Described branch road rear end pipeline is provided with one group of monitoring assembly;
Described in every bar, additive solution branch road is provided with a filter.
Further, described flow control assembly comprises the main line manual ball valve and an electrically-controlled valve that set gradually.
Further, additive solution branch road described in every bar is also provided with the one first branch road manual ball valve be positioned at before described filter, is positioned at the additive solution pump after described filter, a check-valves, an emptying bypass ball valve and the second branch road manual ball valve.
Further, described monitoring assembly comprises the flow transmitter, the pressure that set gradually and takes into account a pressure display transformer.
Further, the arrival end of described additive solution main line and an additive solution reservoir.
Further, the port of export of described additive solution main line is communicated with a container for reducing agent.
Further, also comprise a fixed frame, additive solution main line described in fixed support and additive solution branch road.
As mentioned above, the additive solution pump that the electrically-controlled valve that additive solution flow and loine pressure are arranged by additive solution main line, additive solution branch road are arranged accurately controls, additive solution flow can carry out accurately controlling in real time according to many indexs such as reductant solution flow and concentration, boiler discharged nitrous oxides situation and boiler load changes, meets Practical Project requirement.
Be provided with at least two additive solution branch roads, a preparation and a use during normal operation, many standby one with or how standby multiplex, when certain branch road occurs that accident classification or needs overhaul, the switching can undertaken between additive solution branch road by the respective valves opening and closing and additive solution pump discharge controlling the setting of additive solution branch road is put into operation, and ensures the continuous operation of SNCR system.
Additive solution branch road is provided with filter, can filter the impurity of rare additive solution, avoids the corrosive wear and the blocking that occur upstream device.Additive solution branch road is provided with check-valves, flows backwards to prevent the additive solution when start and stop stage and handoff leg.Additive solution branch road is provided with emptying bypass ball valve, so that additive solution residual in timely discharge line in stoppage in transit process, extends pipeline service life.
Therefore, the utility model has following beneficial effect:
(1) modularization: circuit and elements relevant for additive solution is integrated into unified modules, function intensity is high, and Row control is more clear, facilitates engineer applied;
(2) controllability: additive module installation has corresponding discharge, pressure-measuring-point, can Real-Time Monitoring module current intelligence, and additive solution flow can adjust in time according to actual needs, and controllable degree is high;
(3) security: be provided with at least two additive solution branch roads, can accomplish a preparation and a use, many standby one with or how standby multiplex, can switch in time when breaking down, improve system run all right, branch road is provided with filter, emptying bypass ball valve and check-valves, effectively ensures security of system reliability service.
Accompanying drawing explanation
Fig. 1 is the module composition schematic diagram being applied to the additive device of SNCR flue gas denitrification system of the present utility model
Description of reference numerals: 01-main line manual ball valve; 02-electrically-controlled valve; 03, the 09-the first branch road manual ball valve; 04,10-filter; 05,11-additive solution pump; 06,12-check-valves; 07,13-emptying bypass ball valve; 08, the 14-the second branch road manual ball valve; 15-flow transmitter; 16-pressure gauge; 17-pressure display transformer; 18-additive solution main line; 19,20-additive solution branch road.
Detailed description of the invention
For making above-mentioned feature and advantage of the present utility model become apparent, special embodiment below, and coordinate institute's accompanying drawing to be described in detail below.
As shown in Figure 1, the additive device for SNCR flue gas denitrification system of the present utility model, comprises an additive solution main line 18 and two additive solution branch roads 19,20.Certainly, the operating mode additive solution branch road according to reality is not limited to two, can be unnecessary two, and the utility model does not limit this.
The arrival end of additive solution main line 18 connects an additive container, and it is provided with flow control assembly, comprises the main line manual ball valve 01, the electrically-controlled valve 02 that set gradually, is branch road front end pipeline.Additive solution main line 18 is divided into two additive solution branch roads 19,20 subsequently.Additive solution branch road 19,20 set gradually respectively the first branch road manual ball valve 03,09, filter 04,10, additive solution pump 05,11, check-valves 06,12, emptying bypass ball valve 07,13 and second branch road manual ball valve 08,14.Two additive solution branch roads 19,20 merging afterwards enter additive solution main line 18, and additive solution main line 18 arranges monitoring assembly, comprises the flow transmitter 15, pressure gauge 16 and the pressure display transformer 17 that set gradually, is branch road rear end pipeline.Additive solution main line 18 accesses the container for reducing agent such as reducing agent storage tank of SNCR flue gas denitrification system subsequently.
The start and stop of additive device carry out Long-distance Control by signal.During operation, open valve and the additive solution pump 5 of additive main line 18 and an additive solution branch road (such as 19), guarantee that the emptying bypass ball valve 07 of additive solution branch road 19 is in closed condition, the valve of additive solution branch road 20 and additive solution pump 11 and is in closed condition simultaneously.
The additive solution pump 05,11 that the electrically-controlled valve 02 that additive solution flow and loine pressure are arranged by additive solution main line 18, additive solution branch road 19,20 are arranged accurately controls, additive solution flow can carry out accurately controlling in real time according to many indexs such as reductant solution flow and concentration, boiler discharged nitrous oxides situation and boiler load changes, meets Practical Project requirement.When stopping transport, first closing branch road additive solution pump 05,11, closing main line valve subsequently, opening emptying bypass ball valve 07,11 afterwards and carry out emptying, emptying complete after is closed, closedown branch road valve simultaneously.
Be provided with at least two branch roads, a preparation and a use during normal operation, many standby one with or how standby multiplex, when certain branch road occurs that accident classification or needs overhaul, the switching can undertaken between branch road by controlling brancher respective valves aperture and branch road additive solution pump discharge is put into operation, and ensures the continuous operation of SNCR system.
Filter 04,10, can impurity in filtration additives solution, avoids the corrosive wear and the blocking that occur upstream device.Check-valves 06,12, flows backwards in order to prevent the additive solution when start and stop stage and handoff leg.Emptying bypass ball valve 7,13, with so that additive solution residual in timely discharge line in stoppage in transit process, prolongation pipeline service life.
Claims (7)
1. be applied to an additive device for SNCR flue gas denitrification system, it is characterized in that, comprising:
One additive solution main line, comprises branch road leading portion pipeline and branch road rear end pipeline;
Be connected in parallel at least two additive solution branch roads between described branch road leading portion pipeline and branch road rear end pipeline;
Described branch road front end pipeline is provided with one group of flow control assembly;
Described branch road rear end pipeline is provided with one group of monitoring assembly;
Described in every bar, additive solution branch road is provided with a filter.
2. be applied to the additive device of SNCR flue gas denitrification system as claimed in claim 1, it is characterized in that, described flow control assembly comprises the main line manual ball valve and an electrically-controlled valve that set gradually.
3. be applied to the additive device of SNCR flue gas denitrification system as claimed in claim 1, it is characterized in that, additive solution branch road described in every bar is also provided with the one first branch road manual ball valve be positioned at before described filter, is positioned at the additive solution pump after described filter, a check-valves, an emptying bypass ball valve and the second branch road manual ball valve.
4. be applied to the additive device of SNCR flue gas denitrification system as claimed in claim 1, it is characterized in that, described monitoring assembly comprises the flow transmitter, the pressure that set gradually and takes into account a pressure display transformer.
5. be applied to the additive device of SNCR flue gas denitrification system as claimed in claim 1, it is characterized in that, the arrival end of described additive solution main line and an additive solution reservoir.
6. be applied to the additive device of SNCR flue gas denitrification system as claimed in claim 1, it is characterized in that, the port of export of described additive solution main line is communicated with a container for reducing agent.
7. the additive device being applied to SNCR flue gas denitrification system as described in any one of claim 1 to 6, is characterized in that, also comprise a fixed frame, additive solution main line described in fixed support and additive solution branch road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520382419.8U CN204841401U (en) | 2015-06-05 | 2015-06-05 | Be applied to additive device of SNCR flue gas denitration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520382419.8U CN204841401U (en) | 2015-06-05 | 2015-06-05 | Be applied to additive device of SNCR flue gas denitration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204841401U true CN204841401U (en) | 2015-12-09 |
Family
ID=54731999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520382419.8U Active CN204841401U (en) | 2015-06-05 | 2015-06-05 | Be applied to additive device of SNCR flue gas denitration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204841401U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113580382A (en) * | 2021-07-13 | 2021-11-02 | 太仓北新建材有限公司 | Water reducing agent adding system and method |
| CN114034472A (en) * | 2021-06-09 | 2022-02-11 | 上海智能新能源汽车科创功能平台有限公司 | Construction method of test flow channel of air compressor equipment |
-
2015
- 2015-06-05 CN CN201520382419.8U patent/CN204841401U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034472A (en) * | 2021-06-09 | 2022-02-11 | 上海智能新能源汽车科创功能平台有限公司 | Construction method of test flow channel of air compressor equipment |
| CN113580382A (en) * | 2021-07-13 | 2021-11-02 | 太仓北新建材有限公司 | Water reducing agent adding system and method |
| CN113580382B (en) * | 2021-07-13 | 2023-09-01 | 北新建材(苏州)有限公司 | Water reducer adding system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106621804B (en) | Flue gas ammonia injection mixing device and SCR flue gas denitration system | |
| CN204134478U (en) | Switch protecting type boiler smoke SCR denitration system | |
| CN105967420A (en) | Synergistic gas-liquid-solid pollutant treatment system based on power plant wastewater zero-discharge technology | |
| CN104801161A (en) | Glass melting furnace flue gas desulfurization and denitrification process taking petroleum coke as main fuel and equipment of glass melting furnace flue gas desulfurization and denitrification process | |
| CN104548931A (en) | Device for producing ammonia gas through pyrolysis of urea by using high-temperature flue gas as heat source | |
| CN204841401U (en) | Be applied to additive device of SNCR flue gas denitration system | |
| CN203737102U (en) | Distribution and injection module and system for SNCR (Selective Non Catalytic Reduction) flue gas denitrification system | |
| CN105727735A (en) | Multi-tank easy-to-maintain denitration apparatus | |
| CN204159203U (en) | A kind of flue gas denitrification system being exclusively used in three-waste fluidized mix combustion furnace | |
| CN203648364U (en) | Coal-fired boiler flue gas denitration system | |
| CN203316010U (en) | Flue gas denitration system with SCR and SNCR coupled | |
| CN203764122U (en) | High-flow urea solution circulation module for SNCR (selective non-catalytic reduction) flue gas denitrification | |
| CN208320468U (en) | A kind of flue gas SCR denitration proposes effect system | |
| CN203090498U (en) | Electric heating liquid ammonia evaporation control system for flue gas denitrification | |
| CN206414956U (en) | A kind of solution conveying device for flue gas denitrification system | |
| CN204469529U (en) | A kind of annealing kiln equipment for denitrifying flue gas | |
| CN207680333U (en) | Urea direct-injection SNCR+SCR flue gas denitrification systems | |
| CN110841481A (en) | Sintering flue gas double-heating SCR denitration method and system | |
| CN104785090A (en) | Annealing furnace flue gas denitration device and technology | |
| CN207921759U (en) | A kind of catalyst delivery system for urea seeding hydrolysis system | |
| CN204469547U (en) | A kind of high-temperature flue gas that adopts is as the urea pyrolysis ammonia device of thermal source | |
| CN212440787U (en) | Cement kiln flue gas desulfurization system | |
| CN204973512U (en) | Improved generation SNCR+ ozone flue gas denitration device | |
| CN102688680A (en) | Method for removing sulfur and nitrogen in coal-fired power plant by combining seawater | |
| CN208449035U (en) | A kind of SNCR denitration system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |