CN207786298U - Coal dust kiln gas high efficiency is without the special all standing high-efficient atomizing spraying system of ammonia denitration - Google Patents
Coal dust kiln gas high efficiency is without the special all standing high-efficient atomizing spraying system of ammonia denitration Download PDFInfo
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- CN207786298U CN207786298U CN201721898661.6U CN201721898661U CN207786298U CN 207786298 U CN207786298 U CN 207786298U CN 201721898661 U CN201721898661 U CN 201721898661U CN 207786298 U CN207786298 U CN 207786298U
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Abstract
The utility model discloses coal dust kiln gas high efficiency without the special all standing high-efficient atomizing spraying system of ammonia denitration, including the special atomising device of denitrfying agent, the special atomising device of denitrfying agent includes the special jet pipe of symmetrically arranged multilayer, and it is nozzle specially used to be staggeredly equipped with liquid biological calcium on the special jet pipe between difference layering；The special jet pipe is to be sleeved on the bimetallic tube with concentric inner hose and outer tube formed outside liquid biological calcium distributor pipe by atomizing steam distribution casing, and inner tube leads to liquid biological calcium, and outer tube leads to atomizing steam；The liquid biological calcium nozzle specially used nozzle inner tube and nozzle outer tube including being set with one heart, nozzle inner tube are connected to liquid biological calcium distributor pipe, and nozzle outer tube is connected to atomizing steam and is distributed casing.The utility model realizes all standing in coal-powder boiler flue space section, ensures that liquid biological calcium denitrfying agent comes into full contact with nitrogen oxides.
Description
Technical field
The utility model is related to fume treatment field, especially a kind of coal dust kiln gas high efficiency is covered entirely without ammonia denitration is special
Lid high-efficient atomizing spraying system.
Background technology
Coal-powder boiler is the boiler plant using coal dust as fuel.It is rapid with burning, complete, capacity is big, efficient, adaptation
Coal is wide, the advantages that being convenient for controlling to adjust.The burning feature of coal-powder boiler is that fuel enters combustion chamber with air, and is suspending
It burns under state.The largely high-temperature flue gas containing NOx is generated in combustion process, there is larger harm to normal atmospheric environment, it
Acid rain, toxicity haze can directly be caused.Therefore, larger limitation, denitrating flue gas just seem the NOx in flue gas in process units
It is particularly important.
In coal dust kiln gas there are three types of the traditional treatment methods of NOx：SCR (selective catalytic reduction) denitration technology,
SCNR (non-selective catalytic reduction) denitration technologies and SNCR+SCR process integrations.
SCR techniques are so that flue gas is realized that preferable flow field and concentration are mixed with denitrfying agent by the way that dedicated Benitration reactor is arranged
Close, lower reaction temperature (300~400 DEG C) and have catalyst participation in the case of, reach higher denitration efficiency；SNCR
Technique is to use higher reaction temperature (850~1100 DEG C), without catalyst, by denitrfying agent in boiler combustion chamber exit
High-temperature region, which sprays into, carries out denitration, but due to cannot achieve between reducing agent and flue gas it is preferable mix and the residence time is shorter,
Its denitration efficiency is relatively low；SNCR+SCR process integrations are combined with the advantage of SNCR techniques and SCR techniques respectively, which is divided into
Two reaction zones, front reaction area utilize SNCR techniques, denitrfying agent are sprayed into boiler furnace, remove a part of NOx, and complete anti-
The escape ammonia that should be generated afterwards is carried out into rear end SCR techniques in the presence of catalyst as reducing agent with flue gas again
NOx reduction reactions.Either SCR (selective catalytic reduction) denitration technologies or SCNR (non-selective catalytic reduction)
Denitration technology or SNCR+SCR process integrations, there is the participation of ammonia in denitrification process, since ammonia is hazardous chemical,
There are serious security risks during use.Currently, SCR denitration technology shows many problems in the process at home：First,
SCR denitration technology, the active degradation of catalyst are used when coal-powder boiler low load operation flue-gas temperature is at 300 DEG C or less；
Meanwhile because ammonia reducing agent influences, the ammonium salt blockage catalyst micropore of generation makes catalyst inactivation, considerably reduces catalyst
Service life；Moreover, unreacted ammonia reducing agent escapes into and is discharged into air in flue gas together, because ammonia plays mist characteristic, formed
Haze influences air quality.
Therefore it is badly in need of a kind of no danger, chemical property is stablized, and the denitrfying agent for being readily transported and storing replaces ammonia reducing agent.Needle
Successively develop and apply ozone or hydrogen peroxide oxidation method both at home and abroad to this present situation, but the method invests larger, retrofit work
Measure larger, and operating cost is higher, and applicability is not high；Active ammonia (cyanuric acid) method, denitration cost is too high, cannot solve ammonia and escape
Ease problem.
Utility model content
The purpose of this utility model is to provide one kind to be suitable for realizing coal dust kiln gas using liquid biological calcium denitrfying agent
High efficiency is without the special all standing high-efficient atomizing spraying system of ammonia denitration.
The utility model adopts the following technical solution：
Coal dust kiln gas high efficiency is without the special all standing high-efficient atomizing spraying system of ammonia denitration, including the special atomization of denitrfying agent
Device, the special atomising device of denitrfying agent include the special jet pipe of symmetrically arranged multilayer, and the special jet pipe between difference layering is submitted
It is nozzle specially used that mistake is provided with liquid biological calcium；
The special jet pipe is that having together of being formed outside liquid biological calcium distributor pipe is sleeved on by atomizing steam distribution casing
The bimetallic tube of heart inner and outer tubes, inner tube lead to liquid biological calcium, and outer tube leads to atomizing steam；
The liquid biological calcium nozzle specially used nozzle inner tube and nozzle outer tube including being set with one heart, nozzle inner tube are connected to liquid
State BIOLOGICAL CALCIUM distributor pipe, nozzle outer tube are connected to atomizing steam and are distributed casing.
Further, the special jet pipe is divided into symmetrically arranged multilayer, jet pipe support construction by jet pipe support construction
Longitudinal is fixed on coal-powder boiler furnace wall.
Further, the special jet pipe is divided into symmetrically arranged 3 layers by jet pipe support construction.
Further, the special jet pipe of symmetrically arranged multilayer is fixed on coal-powder boiler furnace wall by furnace wall flange respectively
The left and right sides.
Further, the atomizing steam distribution casing connection has atomizing steam import, the connection of liquid biological calcium distributor pipe
There is liquid biological calcium import.
Further, it further includes the gas-liquid mixed screen casing being connected to and the atomization of flat seam covering of the fan that the liquid biological calcium is nozzle specially used
Nozzle, gas-liquid mixed screen casing connection nozzle inner tube and nozzle outer tube, atomizing steam and liquid biological calcium enter gas-liquid mixed screen casing,
Atomizing steam drives liquid biological calcium to be sprayed by flat seam covering of the fan atomizer.
Further, the special atomising device of the denitrfying agent is connected with denitrfying agent storage tank by out of stock dose of pump.
Use the advantageous effects that technical solution as above obtains for：
(1) the utility model is filled by the injection of the nozzle specially used composition of liquid biological calcium of three layers of multiple symmetrical chiasma arrangements
It sets, realizes all standing in coal-powder boiler flue space section, ensure that liquid biological calcium denitrfying agent comes into full contact with nitrogen oxides, most
The reaction efficiency for improving liquid biological calcium denitrfying agent and nitrogen oxides of limits is saved while ensureing denitration effect
The dosage of liquid biological calcium denitrfying agent.
(2) the utility model is symmetrically arranged three layers of distributor pipe by flue cross section, ensure low pressure atomizing steam and
While the normal conveying of denitrfying agent, the reasonable layout of the multigroup nozzle of single tube is realized.
(3) two sections of asymmetrical arrangements of the utility model distributor pipe are conducive in time extract distributor pipe out when breaking down
Maintenance is replaced.
(4) the utility model liquid biological calcium is nozzle specially used is sprayed by gas-liquid mixed screen casing with dismountable flat seam covering of the fan atomization
The nozzle of mouth composition, makes denitrfying agent be pre-mixed before ejection with atomizing steam, improves denitrfying agent jet atomization effect, is filled with flue gas
Divide mixing, the nitrogen oxides in more efficient removing flue gas.
Description of the drawings
Fig. 1 is the special atomising device structural schematic diagram of denitrfying agent.
Fig. 2 is nozzle arrangements schematic diagram.
Fig. 3 is that nozzle distinguishes viewing angle constructions schematic diagram.
Fig. 4 is coal dust kiln gas high efficiency without the special all standing high-efficient atomizing spraying system schematic diagram of ammonia denitration.
In figure, 1, liquid biological calcium import, 2, atomizing steam import, 3, liquid biological calcium it is nozzle specially used, 4, atomizing steam
It is distributed casing, 5, liquid biological calcium distributor pipe, 6, coal-powder boiler furnace wall, 7, jet pipe support construction, 8, furnace wall flange, 10, denitrfying agent
Storage tank, 11, denitrfying agent pump, 12, the special atomising device of denitrfying agent.
Specific implementation mode
It is described further in conjunction with 1 to 4 pair of specific embodiment of the present utility model of attached drawing：
The utility model coal dust kiln gas high efficiency includes denitration without the special all standing high-efficient atomizing spraying system of ammonia denitration
Agent storage tank 10, denitrfying agent pump 11, the special atomising device 12 of denitrfying agent, and rely on original coal-powder boiler furnace wall 6.Wherein denitrfying agent storage tank
10 and denitrfying agent pump 11 be conventional equipment, connected by pipeline, do not repeated in the utility model, it is de- just for liquid biological calcium
The special atomising device of nitre agent 12 describes in detail.
Coal dust kiln gas high efficiency is without the special all standing high-efficient atomizing spraying system of ammonia denitration, including the special atomization of denitrfying agent
Device 12, the special atomising device of denitrfying agent include the special jet pipe of symmetrically arranged multilayer, on the special jet pipe between difference layering
It is staggeredly equipped with that liquid biological calcium is nozzle specially used, ensures to realize that liquid biological calcium is sprayed in all standing of furnace inner space.
Special jet pipe is that having with one heart of being formed outside liquid biological calcium distributor pipe 5 is sleeved on by atomizing steam distribution casing 4
The bimetallic tube of inner and outer tubes, inner tube lead to liquid biological calcium, and outer tube leads to atomizing steam.
Liquid biological calcium nozzle specially used 3 includes the nozzle inner tube being set with one heart and nozzle outer tube, and nozzle inner tube is connected to liquid
BIOLOGICAL CALCIUM distributor pipe, nozzle outer tube are connected to atomizing steam and are distributed casing.Nozzle specially used liquid biological calcium further includes the gas-liquid being connected to
Screen casing and flat seam covering of the fan atomizer are mixed, gas-liquid mixed screen casing connects nozzle inner tube and nozzle outer tube, atomizing steam and liquid
BIOLOGICAL CALCIUM enters gas-liquid mixed screen casing, and atomizing steam drives liquid biological calcium to be sprayed by flat seam covering of the fan atomizer.It breaks down
When defective nozzle can individually be replaced, it is efficient and convenient.
Special jet pipe is divided into symmetrically arranged multilayer by jet pipe support construction 7, and jet pipe support construction is longitudinal to be fixed on
On coal-powder boiler furnace wall.It is preferred that special jet pipe is divided into symmetrically arranged 3 layers by jet pipe support construction.
The symmetrically arranged special jet pipe of multilayer is fixed on the left and right sides of coal-powder boiler furnace wall by furnace wall flange 8 respectively.
Atomizing steam distribution casing connection has atomizing steam import 2, liquid biological calcium distributor pipe to be connected with liquid biological calcium
Import 1.Denitrfying agent conveyance conduit passes through flanged joint, atomizing steam pipeline and atomizing steam import 2 with liquid biological calcium import 1
By flanged joint, atomizing steam import 2 is located between liquid biological calcium import 1 and furnace wall flange 8.
The special atomising device of denitrfying agent is connected with denitrfying agent storage tank 10 by out of stock dose of pump.When the utility model is used, it takes off
Nitre agent is exported by denitrfying agent storage tank 10 and accesses denitrfying agent pump 11 by pipeline, and denitrfying agent is extremely boiled positioned at medium temperature again by pump pressurized delivered
The special atomising device 12 of liquid bio calcium denitrfying agent of flue space between device and high temperature reboiler, after being mixed with atomizing steam
Quick break sprays into flue gas, and the pressure and straying quatity of denitrfying agent are adjustable, and the pressure and straying quatity of atomizing steam are adjustable.
Certainly, the preferred embodiment of only the utility model described above, the utility model is not limited to enumerate above-mentioned
Embodiment, it should be noted that for any technical person familiar with the field under the guidance of this specification, that is made is all etc.
With replacement, apparent variant, all falls within the essential scope of this specification, ought to be protected by the utility model.
Claims (7)
1. coal dust kiln gas high efficiency is without the special all standing high-efficient atomizing spraying system of ammonia denitration, which is characterized in that including denitration
The special atomising device of agent (12), the special atomising device of denitrfying agent (12) include the special jet pipe of symmetrically arranged multilayer, difference layering
Between special jet pipe on to be staggeredly equipped with liquid biological calcium nozzle specially used (3)；
The special jet pipe is that had by what atomizing steam distribution casing (4) was sleeved on that liquid biological calcium distributor pipe (5) formed outside
The bimetallic tube of concentric inner hose and outer tube, inner tube lead to liquid biological calcium, and outer tube leads to atomizing steam；
The liquid biological calcium nozzle specially used (3) includes the nozzle inner tube being set with one heart and nozzle outer tube, and nozzle inner tube is connected to liquid
State BIOLOGICAL CALCIUM distributor pipe (5), nozzle outer tube are connected to atomizing steam distribution casing (4).
2. coal dust kiln gas high efficiency according to claim 1 is without the special all standing high-efficient atomizing spraying system of ammonia denitration,
It is characterized in that, the special jet pipe is divided into symmetrically arranged multilayer, jet pipe support construction (7) by jet pipe support construction (7)
Longitudinal is fixed on coal-powder boiler furnace wall (6).
3. coal dust kiln gas high efficiency according to claim 1 is without the special all standing high-efficient atomizing spraying system of ammonia denitration,
It is characterized in that, the special jet pipe of symmetrically arranged multilayer is fixed on coal-powder boiler furnace wall (6) by furnace wall flange (8) respectively
The left and right sides.
4. coal dust kiln gas high efficiency according to claim 1 is without the special all standing high-efficient atomizing spraying system of ammonia denitration,
It is characterized in that, the atomizing steam distribution casing (4) is connected with atomizing steam import (2), liquid biological calcium distributor pipe (5) is even
It is connected to liquid biological calcium import (1).
5. coal dust kiln gas high efficiency according to claim 1 is without the special all standing high-efficient atomizing spraying system of ammonia denitration,
It is characterized in that, the liquid biological calcium nozzle specially used (3) further includes gas-liquid mixed screen casing and the atomization spray of flat seam covering of the fan of connection
Mouth, gas-liquid mixed screen casing connection nozzle inner tube and nozzle outer tube, atomizing steam and liquid biological calcium enter gas-liquid mixed screen casing, mist
Change steam zone hydrodynamic state BIOLOGICAL CALCIUM to be sprayed by flat seam covering of the fan atomizer.
6. coal dust kiln gas high efficiency according to claim 1 is without the special all standing high-efficient atomizing spraying system of ammonia denitration,
It is characterized in that, the special atomising device of denitrfying agent (12) is connected with denitrfying agent storage tank (10) by out of stock dose of pump.
7. coal dust kiln gas high efficiency according to claim 2 is without the special all standing high-efficient atomizing spraying system of ammonia denitration,
It is characterized in that, the special jet pipe is divided into symmetrically arranged 3 layers by jet pipe support construction (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721898661.6U CN207786298U (en) | 2017-12-29 | 2017-12-29 | Coal dust kiln gas high efficiency is without the special all standing high-efficient atomizing spraying system of ammonia denitration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721898661.6U CN207786298U (en) | 2017-12-29 | 2017-12-29 | Coal dust kiln gas high efficiency is without the special all standing high-efficient atomizing spraying system of ammonia denitration |
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| CN207786298U true CN207786298U (en) | 2018-08-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110075692A (en) * | 2019-05-27 | 2019-08-02 | 启明星宇节能科技股份有限公司 | A kind of denitration in the stove device and method for abolishing chemical bond constraint |
| CN114146724A (en) * | 2021-12-01 | 2022-03-08 | 南宁师范大学 | Preparation method of modified ZSM-5 molecular sieve |
-
2017
- 2017-12-29 CN CN201721898661.6U patent/CN207786298U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110075692A (en) * | 2019-05-27 | 2019-08-02 | 启明星宇节能科技股份有限公司 | A kind of denitration in the stove device and method for abolishing chemical bond constraint |
| CN114146724A (en) * | 2021-12-01 | 2022-03-08 | 南宁师范大学 | Preparation method of modified ZSM-5 molecular sieve |
| CN114146724B (en) * | 2021-12-01 | 2024-01-30 | 南宁师范大学 | Preparation method of modified ZSM-5 molecular sieve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Full coverage and high efficiency atomizing spray system for high efficiency ammonia free denitration of pulverized coal boiler flue gas Effective date of registration: 20201126 Granted publication date: 20180831 Pledgee: Bank of Tai'an Limited by Share Ltd. Ji'nan branch Pledgor: SHANDONG HENGLI NEW ENERGY ENGINEERING Co.,Ltd. Registration number: Y2020370000171 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20211210 Granted publication date: 20180831 Pledgee: Bank of Tai'an Limited by Share Ltd. Ji'nan branch Pledgor: SHANDONG HENGLI NEW ENERGY ENGINEERING Co.,Ltd. Registration number: Y2020370000171 |