CN106145159A - A kind of cement plant SCR denitration ammonia prepares ammonia system and method - Google Patents
A kind of cement plant SCR denitration ammonia prepares ammonia system and method Download PDFInfo
- Publication number
- CN106145159A CN106145159A CN201510191788.3A CN201510191788A CN106145159A CN 106145159 A CN106145159 A CN 106145159A CN 201510191788 A CN201510191788 A CN 201510191788A CN 106145159 A CN106145159 A CN 106145159A
- Authority
- CN
- China
- Prior art keywords
- ammonia
- vaporizer
- scr denitration
- cement plant
- prepares
- 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.)
- Pending
Links
Abstract
The present invention relates to a kind of cement plant SCR denitration ammonia and prepare ammonia system and method.The invention belongs to environmental technology field.A kind of cement plant SCR denitration ammonia prepares ammonia system, ammonium hydroxide delivery pump and compressed air inlet valve are through pipeline communication twin spray gun, twin spray gun is arranged on vaporizer and is atomized, vaporizer bottom is by pipeline communication pans, top is connected ammonia tourie, vaporizer connection ammonia outlet valve by vaporizer relief valve.The method that a kind of cement plant SCR denitration ammonia prepares ammonia, process includes that ammonia enters ammonia-compressed air twin spray gun through ammonium hydroxide delivery pump and is atomized, the drop of the micron-level particle size after atomization enters vaporizer, ammonia is evaporated by the latent heat utilizing saturated vapor, and ammonia-water mixture of steam goes to cement plant SCR denitration system.The present invention has simple in construction, dependable performance, precise control, flexible, safe and reliable, process stabilizing, operating cost are low and evaporation efficiency advantages of higher.
Description
Technical field
The invention belongs to environmental technology field, particularly relate to a kind of cement plant SCR denitration ammonia prepare ammonia system and
Its method.
Background technology
At present, " cement industry atmosphere pollutants emission standards " GB4915-2013 specifies the row of general regional nitrogen oxides
Put value to control at 400mg/m3Hereinafter, the discharge value of the nitrogen oxides of key area controls at 320mg/m3Hereinafter, some city
The discharge value of the nitrogen oxides in city is less than 200mg/m3, then under this emission request, it is necessary to use denitration efficiency
Higher SCR SCR denitration technology, up to the present, all of cement plant is the most all equipped with selection
Property on-catalytic SNCR denitration system, also have the reducing agents such as ammonia, if use SCR denitration system, then the most permissible
Use the ammonia of SNCR denitration system as reducing agent, it is not necessary to additionally to increase a set of reducing agent stocking system.
Ammonia prepares the technology of ammonia mainly to be had: the first is ammonia still, and owing to ammonia still structure is the most complicated, tower body is huge,
And cement plant SCR denitration reducing agent consumption is less, and involve great expense.The second is to use heat smoke to directly heat
Ammonia, in heat smoke, dust concentration is very big, uses heat smoke to directly heat ammonia, can cause ammonia water spray gun, valve blockage
Etc. problem, service life is short, and running rate is low, needs often to clear up maintenance.The third is to use heat smoke indirectly to add
Hot ammonia, heat smoke heats ammonia, first ammonia evaporation indirectly needs substantial amounts of heat, and therefore heating ammonia needs bigger
The heat smoke of amount, causes heat exchanger bigger than normal, there is also the abrasion of dust heat exchanger simultaneously, and service life is the highest, cost
The technical problems such as costliness.
Summary of the invention
The present invention solves that technical problem present in known technology provides a kind of cement plant SCR denitration ammonia to prepare ammonia
Gas system and method.
The present invention all has surplus heat according to most cement plants the saturated vapor of boiler, by saturated vapor as adding thermal medium,
Ammonia is carried out indirect heat exchange, utilizes the latent heat of vaporization of saturated vapor that ammonia is heated, due to the ammonia of equal quality
Evaporation latent heat be less than the evaporation of water latent heat of equal quality, in the case of same pressure, the bubble point temperature of ammonia is less than
The boiling point of water.Therefore it is feasible that the latent heat using saturated vapor carries out heating to ammonia, and the consumption of saturated vapor
Little, operating cost is low.Utilizing atomizing lance to be atomized by ammonia, the ammonia droplet after atomization increases heat-transfer surface simultaneously
Long-pending, ammonia evaporation rate is greatly improved.
From cement plant, existing SNCR tank field is delivered to several Zhi Shuan through ammonium hydroxide delivery pump to the ammonia of 15-30% concentration of the present invention
Fluid atomizing spray gun, ammonia is atomized into the droplet of mean diameter 40-80 μm by twin spray gun, enters into ammonia
After vaporizer, vaporizer has heat exchange pipeline, from the saturated vapor being not less than 150 DEG C of the 0.4-0.6MPa in cement plant
Enter in heat exchange pipeline, carry out indirect heat exchange, owing to the bubble point temperature of the ammonia of 15-30% concentration is less than with the ammonia of atomization
100 DEG C, therefore by flash evapn, the ammonia-water steam mixed gas after evaporation takes off for cement plant type selecting catalysis reduction SCR
Nitre system, a small amount of ammonia not having evaporation enters ammonia pans, pans the most afterwards by the outlet of base of evaporator
Pipeline is connected to ammonium hydroxide delivery pump porch, the ammonia of pans can be squeezed into twin spray gun again and enter vaporizer
In be circulated evaporation.
An object of the present invention is to provide one and has simple in construction, dependable performance, precise control, flexible, peace
The most reliable, length in service life, operating cost cement plant SCR denitration ammonia low, evaporation efficiency high prepares ammonia
Gas system.
Cement plant of the present invention SCR denitration ammonia is prepared ammonia system and is adopted the technical scheme that:
A kind of cement plant SCR denitration ammonia prepares ammonia system, is characterized in: ammonia is prepared ammonia system and included ammonia
Delivery pump, vaporizer, twin spray gun, ammonia outlet valve, pans, ammonia tourie, compressed air inlet
Valve；Ammonium hydroxide delivery pump and compressed air inlet valve are arranged on through pipeline communication twin spray gun, twin spray gun
Being atomized on vaporizer, vaporizer bottom is absorbed by vaporizer relief valve connection ammonia by pipeline communication pans, top
Tank, vaporizer connection ammonia outlet valve.
Cement plant of the present invention SCR denitration ammonia is prepared ammonia system and can also be adopted the following technical scheme that
Described cement plant SCR denitration ammonia prepares ammonia system, is characterized in: be provided with spiral heat exchange in vaporizer
Pipe, saturated vapor inlet valve is by pipeline communication heat exchanger tube, and twin spray gun spray nozzle is towards the vaporizer outside heat exchanger tube
Cavity.
Described cement plant SCR denitration ammonia prepares ammonia system, is characterized in: pans are by valve and pipeline communication ammonia
Water delivery pump entrance.
Described cement plant SCR denitration ammonia prepares ammonia system, is characterized in: ammonia tourie is respectively communicated with by valve
Tap water and ammonium hydroxide delivery pump entrance.
The two of the purpose of the present invention are to provide one and have that technique is simple, precise control, flexible, safe and reliable, fortune
The method that row low cost, the cement plant SCR denitration ammonia of evaporation efficiency high prepare ammonia.
Cement plant of the present invention SCR denitration ammonia is prepared the method for ammonia and is adopted the technical scheme that:
The method that a kind of cement plant SCR denitration ammonia prepares ammonia, is characterized in: ammonia is prepared ammonia process and included ammonia
Water enters ammonia-compressed air twin spray gun through ammonium hydroxide delivery pump and is atomized, the micron-level particle size after atomization
Drop enters vaporizer, and the ammonia after atomization and saturated vapor carry out indirect heat exchange in vaporizer, utilize saturated vapor
Ammonia is evaporated by latent heat, and the ammonia-water mixture of steam after evaporation goes to cement plant SCR denitration system.
Cement plant of the present invention SCR denitration ammonia is prepared the method for ammonia and can also be adopted the following technical scheme that
The method that described cement plant SCR denitration ammonia prepares ammonia, is characterized in: unevaporated ammonia in vaporizer
Pass back into pans, be again introduced in vaporizer being circulated evaporation by ammonium hydroxide delivery pump.
The method that described cement plant SCR denitration ammonia prepares ammonia, is characterized in: vaporizer is equipped with relief valve, super
The ammonia-water steam of pervaporation device pressure enters ammonia tourie through relief valve, carries out ammonia absorption with water, the ammonia after absorption
Water is again introduced in vaporizer being circulated evaporation by ammonium hydroxide delivery pump.
The method that described cement plant SCR denitration ammonia prepares ammonia, is characterized in: twin gun inlets ammonia
Water and compressed-air actuated pressure are 0.2-0.4MPa, and the flow of single twin spray gun is 1-4L/min, two-fluid
Atomizing lance is atomized into the drop that mean diameter is 40-80 μm.
The method that described cement plant SCR denitration ammonia prepares ammonia, is characterized in: the pressure of saturated vapor is
0.4-0.6MPa, temperature is not less than 150 DEG C.
The method that described cement plant SCR denitration ammonia prepares ammonia, is characterized in: the operating pressure of vaporizer is
0.1-0.4MPa, high limits pressure is 0.5MPa, opens more than the relief valve at 0.5MPa vaporizer top, and ammonia enters ammonia
Tourie carries out ammonia absorption.
The present invention has the advantage that with good effect:
Cement plant SCR denitration ammonia prepares the technical scheme that ammonia system and method are brand-new owing to have employed the present invention,
Compared with prior art, present system is simple and reliable for structure, controls flexible.In using cement plant due to system
Saturated vapor is as thermal source, and thermal source is easy to use, and saturated vapor has bigger latent heat simultaneously, when steam is condensed into water
Producing substantial amounts of heat, and the bubble point temperature of ammonia is less than the boiling point of water, therefore evaporating required temperature is less than 100 DEG C, needs
The saturated vapor amount wanted is little.Ammonia is after twin spray gun is atomized, and size droplet diameter is micron level, increases
The heat exchange area of ammonia, substantially increases the evaporation rate of ammonia.Unevaporated remaining ammonia is entered by this system simultaneously
Row circulating and evaporating, it is ensured that the utilization rate of ammonia.Ammonia vaporizer configures relief valve, it is ensured that the safety of whole system
Pollution-free.
Accompanying drawing explanation
Fig. 1 is that cement plant of the present invention SCR denitration ammonia prepares ammonia system structure schematic diagram.
In figure, 1 ammonium hydroxide delivery pump；2 saturated vapor imported valves；3 twin spray guns；4 vaporizers；5 compression skies
Gas imported valve；6 pans；7 ammonia touries；8 relief valve；9 heat exchanger fins；10 ammonia flow gauge；11 ammonia regulations
Valve；12 ammonia absorption cell outlet valves.
Detailed description of the invention
For the summary of the invention of the present invention, feature and effect can be further appreciated that, hereby enumerate following example, and coordinate attached
Figure describes in detail as follows:
Refering to accompanying drawing 1.
Embodiment 1
A kind of cement plant SCR denitration ammonia prepares ammonia system, including: ammonium hydroxide delivery pump, vaporizer, saturated vapor
Inlet valve, heat exchanger tube, twin spray gun, ammonia outlet valve, ammonia outlet effusion meter, pans, ammonia absorbs
Tank, compressed air inlet valve etc..Ammonium hydroxide delivery pump and compressed air inlet valve are through pipeline communication twin spray gun, double
Fluid atomizing spray gun is arranged on vaporizer and is atomized, and is provided with spiral heat exchange tube, saturated vapor inlet valve in vaporizer
By pipeline communication heat exchanger tube, twin spray gun spray nozzle is towards the evaporator cavities outside heat exchanger tube.Vaporizer bottom by
Pipeline communication pans, pans are by valve and pipeline communication ammonium hydroxide delivery pump entrance.The ammonia evaporated the most completely is through centre
Tank, is then again introduced in vaporizer being circulated evaporation by ammonium hydroxide delivery pump, it is ensured that ammonia all of, without useless ammonia
Water is discharged.Top is connected ammonia tourie by vaporizer relief valve, and ammonia tourie is respectively communicated with tap water and ammonia by valve
Delivery pump entrance.Exceed the ammonia of evaporator pressure in relief valve enters ammonia absorption cell, it is ensured that the safety of system and
Prevent ammonia discharge in an atmosphere.Vaporizer connection ammonia outlet valve, ammonia outlet valve equipped with ammonia outlet effusion meter,
Through pipeline communication cement plant SCR denitration system.
Embodiment 2
The method that a kind of cement plant SCR denitration ammonia prepares ammonia, ammonia is prepared ammonia process and is included that ammonia is through ammonia
Delivery pump enters ammonia-compressed air twin spray gun and is atomized, and the drop of the micron-level particle size after atomization enters and steams
Sending out device, the ammonia after atomization and saturated vapor carry out indirect heat exchange in vaporizer, utilize the latent heat of saturated vapor by ammonia
Evaporation, the ammonia-water mixture of steam after evaporation goes to cement plant SCR denitration system.
In vaporizer, unevaporated ammonia passes back into pans, is again introduced in vaporizer being circulated by ammonium hydroxide delivery pump
Evaporation.Vaporizer enters ammonia tourie through relief valve equipped with relief valve, the ammonia-water steam exceeding evaporator pressure, uses
Water carries out ammonia absorption, and the ammonia after absorption is again introduced in vaporizer being circulated evaporation by ammonium hydroxide delivery pump.
Twin gun inlets ammonia and compressed-air actuated pressure are 0.2-0.4MPa, single twin spray gun
Flow is 1-4L/min, and twin spray gun is atomized into the drop that mean diameter is 40-80 μm.The pressure of saturated vapor
Power is 0.4-0.6MPa, and temperature is not less than 150 DEG C.The operating pressure of vaporizer is 0.1-0.4MPa, and high limits pressure is
0.5MPa, opens more than the relief valve at 0.5MPa vaporizer top, and ammonia enters ammonia tourie and carries out ammonia absorption, protects
The safety of card system and prevent ammonia discharge in an atmosphere.
The specific implementation process of the present embodiment:
From the reducing agent ammonia of cement plant SNCR system in ammonium hydroxide delivery pump 1 is transported to twin spray gun 3,
The two-fluid of twin spray gun 3 is to use compressed air and ammonia, and compressed air is empty from the compression of cement producing line
Gas, compressed air controls switch by compressed air inlet valve 5.Compressed air piping is again connected to twin
On spray gun 3.
Saturated vapor from cement plant waste heat boiler is switched by saturated vapor imported valve 2, and saturated vapor connects
On vaporizer 4, in vaporizer in 4, saturated vapor enter in heat exchanger fin 9 with atomization after ammonia indirectly change
Heat, saturated vapor returns in waste heat boiler after being condensed into water.
Ammonia carries out heat exchange with saturated vapor in heat exchanger fin after twin spray gun 3 is atomized into droplet, substantial amounts of
Ammonia is evaporated, and the ammonia-water steam gas after evaporation goes to cement plant SCR denitration system, the flow of mixed gas
Can be controlled by ammonia regulation valve 11 and ammonium hydroxide delivery pump 1 is controlled.
In vaporizer 4, remain unevaporated ammonia enter in pans 6 through the outlet of base of evaporator, pans 6
It is connected with ammonium hydroxide delivery pump 1, the ammonia in pans 6 can be continued on to twin by ammonium hydroxide delivery pump 1
In spray gun 3, it is circulated evaporation subsequently in vaporizer 4.
Vaporizer 4 top is provided with relief valve 8, and when vaporizer internal gas pressure transfinites, relief valve automatically opens up, greatly
The ammonia of amount enters in ammonia tourie 7, and ammonia tourie dissolves tap water equipped with the tap water from plant area, ammonia
Rear formation ammonia, can periodically open the ammonia absorption cell outlet valve 12 of ammonia tourie 7 connection, is formed after absorbing
Ammonia periodically re-starts evaporation.
The pressure 0.4-0.6MPa of the saturated vapor needed, temperature is not less than 150 DEG C, and saturated vapor amount is about 1.1kg and satisfies
With steam/1kg ammonia, the latent heat of the saturated vapor of same quality, more than the latent heat of ammonia, utilizes saturated vapor to enter ammonia
Row indirect heat exchange, operating cost is low.
Ammonia and compressed air simultaneously enter in twin spray gun 3 and are atomized, and according to the consumption of ammonia, rationally select
Select the number of spray gun, the flow-control of single ammonia twin spray gun 3 drop after 1-4L/min, ammonia atomization
Mean diameter 40-80 μm, is greatly increased the surface area of ammonia heat exchange, ammonia flash evapn.
The ammonia evaporated the most completely in vaporizer 4 is circulated evaporation by reentering in vaporizer 4 after pans 6,
Ensure that the utilization of ammonia reaches 100%, discharge without deposed ammonia.
The Stress control of vaporizer 4 is at below 0.5MPa, and when pressure is more than 0.5MPa, the relief valve 8 at top is opened,
Improve safety, and the ammonia released is reclaimed by tourie 7, carries out double evaporation-cooling, it is ensured that ammonia simultaneously
Utilization reach 100%, without deposed ammonia discharge.
Claims (10)
1. SCR denitration ammonia in cement plant prepares an ammonia system, it is characterized in that: ammonia is prepared ammonia system and included ammonia
Delivery pump, vaporizer, twin spray gun, ammonia outlet valve, pans, ammonia tourie, compressed air
Inlet valve；Ammonium hydroxide delivery pump and compressed air inlet valve spray through pipeline communication twin spray gun, twin
Rifle is arranged on vaporizer and is atomized, and vaporizer bottom is by pipeline communication pans, and top is by vaporizer relief valve
Connection ammonia tourie, vaporizer connection ammonia outlet valve.
Cement plant the most according to claim 1 SCR denitration ammonia prepares ammonia system, it is characterized in that: in vaporizer
Be provided with spiral heat exchange tube, saturated vapor inlet valve by pipeline communication heat exchanger tube, twin spray gun spray nozzle towards
Evaporator cavities outside heat exchanger tube.
Cement plant the most according to claim 1 and 2 SCR denitration ammonia prepares ammonia system, it is characterized in that: middle
Tank is by valve and pipeline communication ammonium hydroxide delivery pump entrance.
Cement plant the most according to claim 1 and 2 SCR denitration ammonia prepares ammonia system, it is characterized in that: ammonia
Tourie is respectively communicated with tap water and ammonium hydroxide delivery pump entrance by valve.
5. the method that SCR denitration ammonia in cement plant prepares ammonia, is characterized in that: ammonia is prepared ammonia process and included ammonia
Water enters ammonia-compressed air twin spray gun through ammonium hydroxide delivery pump and is atomized, the micron order grain after atomization
The drop in footpath enters vaporizer, and the ammonia after atomization and saturated vapor carry out indirect heat exchange in vaporizer, utilizes full
Being evaporated by ammonia with the latent heat of steam, the ammonia-water mixture of steam after evaporation goes to cement plant SCR denitration system.
The method that cement plant the most according to claim 5 SCR denitration ammonia prepares ammonia, is characterized in that: vaporizer
Interior unevaporated ammonia passes back into pans, is again introduced in vaporizer being circulated evaporation by ammonium hydroxide delivery pump.
The method that cement plant the most according to claim 5 SCR denitration ammonia prepares ammonia, is characterized in that: vaporizer
Equipped with relief valve, the ammonia-water steam exceeding evaporator pressure enters ammonia tourie through relief valve, carries out ammonia with water
Aspiration is received, and the ammonia after absorption is again introduced in vaporizer being circulated evaporation by ammonium hydroxide delivery pump.
8. the method preparing ammonia according to the cement plant SCR denitration ammonia described in claim 5,6 or 7, is characterized in that:
Twin gun inlets ammonia and compressed-air actuated pressure are 0.2-0.4MPa, single twin spray gun
Flow is 1-4L/min, and twin spray gun is atomized into the drop that mean diameter is 40-80 μm.
9. the method preparing ammonia according to the cement plant SCR denitration ammonia described in claim 5,6 or 7, is characterized in that:
The pressure of saturated vapor is 0.4-0.6MPa, and temperature is not less than 150 DEG C.
10. the method preparing ammonia according to the cement plant SCR denitration ammonia described in claim 5,6 or 7, is characterized in that:
The operating pressure of vaporizer is 0.1-0.4MPa, and high limits pressure is 0.5MPa, more than 0.5MPa vaporizer top
Relief valve is opened, and ammonia enters ammonia tourie and carries out ammonia absorption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510191788.3A CN106145159A (en) | 2015-04-21 | 2015-04-21 | A kind of cement plant SCR denitration ammonia prepares ammonia system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510191788.3A CN106145159A (en) | 2015-04-21 | 2015-04-21 | A kind of cement plant SCR denitration ammonia prepares ammonia system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106145159A true CN106145159A (en) | 2016-11-23 |
Family
ID=58057864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510191788.3A Pending CN106145159A (en) | 2015-04-21 | 2015-04-21 | A kind of cement plant SCR denitration ammonia prepares ammonia system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106145159A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106943758A (en) * | 2017-04-28 | 2017-07-14 | 山东神华山大能源环境有限公司 | A kind of device and method that ammoniacal liquor is evaporated and diluted simultaneously with boiler hot air |
| CN109045892A (en) * | 2018-10-18 | 2018-12-21 | 蔡赞区 | Thermostatic type liquid gasification jet gun system and its gasification and jet method |
| CN115518515A (en) * | 2022-09-14 | 2022-12-27 | 山东莱钢永锋钢铁有限公司 | Coal-fired boiler denitration system improvement method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489140A (en) * | 2012-01-04 | 2012-06-13 | 江苏新世纪江南环保股份有限公司 | Flue gas desulphurization and denitration reactant integrated supply method and apparatus |
| CN202527072U (en) * | 2012-04-20 | 2012-11-14 | 湖南安普诺环保科技有限公司 | Selective catalytic reduction (SCR) smoke denitration device based on urea solutions or ammonia water |
| CN103100301A (en) * | 2012-12-21 | 2013-05-15 | 宁夏科行环保工程有限公司 | Reducing agent gasification equipment for SCR (selective catalytic reduction) |
| CN203002216U (en) * | 2012-12-27 | 2013-06-19 | 浙江信耳科技有限公司 | SCR (selective catalytic reduction) flue gas denitration system with preposed two-fluid jet system |
-
2015
- 2015-04-21 CN CN201510191788.3A patent/CN106145159A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489140A (en) * | 2012-01-04 | 2012-06-13 | 江苏新世纪江南环保股份有限公司 | Flue gas desulphurization and denitration reactant integrated supply method and apparatus |
| CN202527072U (en) * | 2012-04-20 | 2012-11-14 | 湖南安普诺环保科技有限公司 | Selective catalytic reduction (SCR) smoke denitration device based on urea solutions or ammonia water |
| CN103100301A (en) * | 2012-12-21 | 2013-05-15 | 宁夏科行环保工程有限公司 | Reducing agent gasification equipment for SCR (selective catalytic reduction) |
| CN203002216U (en) * | 2012-12-27 | 2013-06-19 | 浙江信耳科技有限公司 | SCR (selective catalytic reduction) flue gas denitration system with preposed two-fluid jet system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106943758A (en) * | 2017-04-28 | 2017-07-14 | 山东神华山大能源环境有限公司 | A kind of device and method that ammoniacal liquor is evaporated and diluted simultaneously with boiler hot air |
| CN109045892A (en) * | 2018-10-18 | 2018-12-21 | 蔡赞区 | Thermostatic type liquid gasification jet gun system and its gasification and jet method |
| CN109045892B (en) * | 2018-10-18 | 2020-11-10 | 蔡赞区 | Constant-temperature liquid gasification air injection spray gun system and gasification and air injection method thereof |
| CN115518515A (en) * | 2022-09-14 | 2022-12-27 | 山东莱钢永锋钢铁有限公司 | Coal-fired boiler denitration system improvement method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210051019U (en) | Differential pressure economizer and carbon dioxide refrigerating system comprising same | |
| CN107473301B (en) | A kind of desulfurization wastewater low-temperature evaporation processing system | |
| CN102794106A (en) | Method and device for spraying reducing agent used for selective catalytic reduction (SCR) of NOx | |
| CN205145962U (en) | System is used multipurposely to thermal power plant's desulfurizing tower waste heat | |
| CN106145159A (en) | A kind of cement plant SCR denitration ammonia prepares ammonia system and method | |
| KR20200006089A (en) | heat exchanger | |
| CN105819532A (en) | Seawater desalination system with waste heat recovery device | |
| CN106091489B (en) | Vertical double-falling-film heat exchanger and absorption heat pump | |
| JP2010276304A (en) | Steam generation system | |
| CN201382402Y (en) | Desuperheater | |
| CN102824841B (en) | Selective non-catalytic reduction (SNCR) denitration system of coal-fired circulating fluidized bed boiler | |
| CN207933087U (en) | A kind of smoke waste heat utilization system and desulfurization wastewater vapo(u)rization system | |
| CN206235183U (en) | A kind of refrigerator cooling system | |
| CN105546877B (en) | Gravitational field low-grade heat supply changeover device and method | |
| CN106587239A (en) | Wastewater concentrating system and method utilizing flue gas waste heat and based on liquid column evaporation | |
| CN204829981U (en) | Direct composite flue gas condenser | |
| CN107461958A (en) | One kind utilizes jet type heat pump recovery chemical fertilizer factory gas making water residual heat system | |
| CN103175360B (en) | Injection type vacuum ice slurry preparation system | |
| CN106679176A (en) | Oilfield reinjection water waste heat recycling heat pump unit and system thereof | |
| CN202599135U (en) | Heat energy recycling exchanger for industrial waste steam | |
| CN214141658U (en) | Waste water decrement treatment equipment | |
| CN111320222B (en) | Desulfurization wastewater zero-emission treatment system and method based on double-tower structure | |
| CN106917681A (en) | It is the gas distributed energy system and technique of reducing agent denitration using urea | |
| CN204880859U (en) | Machinery vapor recompression heat pump | |
| CN111482083A (en) | Dangerous waste incineration SCR (Selective catalytic reduction) equipment without external energy consumption |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161123 |
|
| RJ01 | Rejection of invention patent application after publication |