CN105889969A - Nitrate-free combustion system capable of recycling carbon dioxide - Google Patents
Nitrate-free combustion system capable of recycling carbon dioxide Download PDFInfo
- Publication number
- CN105889969A CN105889969A CN201610373796.4A CN201610373796A CN105889969A CN 105889969 A CN105889969 A CN 105889969A CN 201610373796 A CN201610373796 A CN 201610373796A CN 105889969 A CN105889969 A CN 105889969A
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- CN
- China
- Prior art keywords
- carbon dioxide
- gas
- combustion system
- oxygen
- boiler
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
- F23L2900/07001—Injecting synthetic air, i.e. a combustion supporting mixture made of pure oxygen and an inert gas, e.g. nitrogen or recycled fumes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/32—Direct CO2 mitigation
Abstract
The invention discloses a nitrate-free combustion system capable of recycling carbon dioxide. The nitrate-free combustion system comprises an oxygen preparation device, wherein the oxygen preparation device is connected with an oxygen buffer tank; the oxygen buffer tank is connected with a gas proportioning device; a mixed gas outlet of the gas proportioning device is connected with a boiler forced draft fan; the boiler forced draft fan is connected with a combustion device; a waste gas outlet of the combustion device is connected with a carbon dioxide recycling device and a tail gas cooler correspondingly; the tail gas cooler is connected with a tail gas buffer tank; the tail gas buffer tank is connected with the gas proportioning device. The nitrate-free combustion system has the beneficial effects that nitric oxide in tail gas combusted in a boiler meets the standard, and is not needed to be subjected to nitric oxide treatment; carbon dioxide in the tail gas can be reused, and redundant carbon dioxide can be further recycled; by the control of the concentration of oxygen, combustion can be controlled at a required state, so that the combustion efficiency of the combustion system is higher; the nitrate-free combustion system is high in applicability; the conventional fuel and gas boiler can be equipped with a nitrate-free combustion and carbon dioxide recycling system without large-scale transformation, and is low in investment cost.
Description
Technical field
The present invention relates to technical field of environment protection equipment, the one especially relating to dust process and VOCs treatment can be right
Carbon dioxide carries out the combustion system without nitre reclaimed.
Background technology
Air pollution problems inherent increases the weight of day by day in recent years, and China is as a developing power, when the most considerably long one section
In will face the severe situation that air pollution constantly increases the weight of.In industrial production, a lot of industries are required for carrying out at high-temperature heating
Reason, discharges substantial amounts of waste gas, is all mingled with harmful impurity in these waste gas in heating process；The polishing of industrial products, former material
Expect the dust of generations such as crush/milling.Not only human body is caused the biggest harm, also atmospheric environment can be polluted, not have
Reach the discharge standard of country, if Around environment can be produced serious in air by organic exhaust gas of leaving, dust emission
Pollution, it is therefore necessary to organic exhaust gas, the dust produced in production process is effectively processed, suitable to reach
Emission request after enter again in air.
The combustion system that boiler is conventional at present is made up of air-fuel, has the oxygen of 21% to participate in combustion-supporting in air,
The nitrogen of 78% is not involved in burning, and the most substantial amounts of nitrogen by meaningless heating, at high temperature enters air, causes substantial amounts of heat
Amount loss, nitrogen the most also generates NOX gas with oxygen reaction simultaneously, enters air and easily forms acid rain, endangers earth's surface
Vegeto-animal normal existence and life, cause environmental pollution.Tradition method of denitration is that reacted flue gas is introduced denitrating tower, uses
Ammonia or ammoniacal liquor reduce the NOX in flue gas, enter air after generating nitrogen and water, and this process also results in substantial amounts of heat and damages
Losing, due to the requirement of chemical reaction to be met, denitrating tower cost of investment is the biggest.
Summary of the invention
The problem to be solved in the present invention is to provide that a kind of simple in construction, cost of investment be low, energy-conserving and environment-protective, efficiency of combustion are high,
Nitrogen oxide emission is low and the combustion system without nitre that can reclaim carbon dioxide.
For solving above-mentioned technical problem, the technical solution used in the present invention is: a kind of can reclaim carbon dioxide
Combustion system without nitre, includes oxygen device for making, and described oxygen device for making connects oxygen surge tank, and described oxygen buffers
Tank connects gas mixing ratio device, and the mixed gas outlet of described gas mixing ratio device connects boiler fan, described boiler
Pressure fan connects has burner, the side of described burner to be provided with fuel supply device, the waste gas of described burner
Outlet is connected to carbon dioxide recovering apparatus and exhaust gas cooler, and described exhaust gas cooler connects tail gas buffer, institute
State tail gas buffer to be connected with described gas mixing ratio device.
Preferably, above-mentioned a kind of combustion system without nitre that carbon dioxide can be reclaimed, wherein said gas mixing ratio
Device includes gas proportioning device and the first air inlet being separately positioned on described gas proportioning device and the second air inlet, institute
Stating the first air inlet to be connected with described tail gas buffer, described second air inlet is connected with described oxygen surge tank.
Preferably, above-mentioned a kind of combustion system without nitre that can reclaim carbon dioxide, wherein said oxygen buffers
It is provided with gas flow meter between tank and described second air inlet.
Preferably, above-mentioned a kind of combustion system without nitre that carbon dioxide can be reclaimed, wherein said burner
Include boiler or kiln.
Preferably, above-mentioned a kind of combustion system without nitre that carbon dioxide can be reclaimed, wherein said fuel supply
Switching valve and check valve it is provided with between device and described boiler or kiln.
Preferably, above-mentioned a kind of combustion system without nitre that carbon dioxide can be reclaimed, wherein said burner
And it is provided with gas concentration analyzer between described carbon dioxide recovering apparatus.
Preferably, above-mentioned a kind of combustion system without nitre that can reclaim carbon dioxide, wherein said tail gas cools down
Cooling water inlet and coolant outlet it is respectively arranged with on device.
The present invention has the advantage that and provides the benefit that:
1, the tail gas nitrogen oxide after boiler combustion is the most up to standard, it is not necessary to carry out the process of nitrogen oxides again, reduces substantial amounts of
Vent gas treatment cost, is more beneficial for energy-conserving and environment-protective.
2, the carbon dioxide in tail gas is recycled, it is not necessary to additionally increase carbon dioxide air feed equipment, not only reduce two
The discharge of carbonoxide, and save the cost producing carbon dioxide.
3, the concentration controlling oxygen makes Combustion System in required state, thus can select difference according to different fuel
Oxygen concentration, it is possible to make the efficiency of combustion of fuel higher.
4, applicability is strong, and existing fuel oil can increase without nitre burning and titanium dioxide without large-scale redevelopment with gas fired-boiler
Carbon recovery system, cost of investment is low.
5, the cost that this system is main is the energy consumption cost of oxygen producing, and the tail gas of discharge is the carbon dioxide of high concentration
And water vapour, carbon dioxide recovering apparatus can be mounted directly, as reclaimed carbon dioxide and selling outward, major part oxygen processed can be offset
The cost of gas even earns profit.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention；
Fig. 2 is the structural representation of burner in the present invention；
Fig. 3 is the structural representation of gas mixing ratio device in the present invention.
In figure: 1, oxygen device for making 2, oxygen surge tank 3, gas mixing ratio device
4, boiler fan 5, burner 6, gas concentration analyzer
7, exhaust gas cooler 8, tail gas buffer 9, carbon dioxide recovering apparatus
10, fuel supply device 11, coolant outlet 12, cooling water inlet
31, gas proportioning device 32, mixed gas outlet the 33, first air inlet
34, the second air inlet 35, gas flow meter 51, boiler
52, switching valve 53, check valve
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1, Figure 2 and Figure 3, a kind of combustion system without nitre that carbon dioxide can be reclaimed, include oxygen
Device for making 1, oxygen device for making 1 connects oxygen surge tank 2, and oxygen surge tank 2 connects gas mixing ratio device 3, gas
Matching device 3 includes gas proportioning device 31 and the first air inlet 33 and second of being separately positioned on gas proportioning device 31 enters
Gas port 34, the second air inlet 34 is connected with oxygen surge tank 2, is provided with gas between oxygen surge tank 2 and the second air inlet 34
Flowmeter 35, the mixed gas outlet 32 of gas mixing ratio device 3 connects boiler fan 4, and boiler fan 4 connects burning
Device 5, burner 5 generally uses boiler 51 or kiln, and the side of burner 5 is provided with fuel supply device 10, fuel
Being provided with switching valve 52 and check valve 53 between feeding mechanism 10 and boiler 51 or kiln, the waste gas outlet of burner 5 is respectively
Connect and have carbon dioxide recovering apparatus 9 and exhaust gas cooler 7, between burner 5 and carbon dioxide recovering apparatus 9, be provided with gas
Bulk concentration analyzer 6, exhaust gas cooler 7 is respectively arranged with cooling water inlet 12 and coolant outlet 11, and exhaust gas cooler 7 is even
Being connected to tail gas buffer 2, tail gas buffer 2 is connected with gas mixing ratio device 3, on tail gas buffer 2 and gas proportioning device 31
First air inlet 33 connects.
Global design is that the gaseous mixture using carbon dioxide and oxygen produces dress instead of air as burning rate accelerator for boiler, oxygen
Put 1 from air isolated oxygen, send into oxygen surge tank 2, then access to the second air inlet 34 on gas proportioning device 31；Gas
Boiler fan 4 is sent into after the carbon dioxide and oxygen automatic mixing by a certain percentage mixing that body proportioner 31 will loop back
Entrance, sends into boiler 51 and fuel mixed combustion through boiler fan 4；Boiler exhaust gas after burning out divides two-way, a road to send
Entering carbon dioxide recovering apparatus 9, the carbon dioxide in carbon dioxide recovering apparatus 9 tail gas will be purified and liquefy recovery；Separately
One tunnel sucks tail gas buffer 8 after sucking exhaust gas cooler 7 cooling under the negative pressure that boiler fan 4 produces, then is inhaled into gas
First air inlet 33 of body proportioner 31, this partial CO 2 will be recycled.
When system is just run, intrasystem nitrogen content is higher, along with the recycling of tail gas, after through gas mixing ratio
The mixed gas of device 31 is practically free of nitrogen, so that the amount of nitrogen oxides in flue gas is reduced to qualified discharge after Ran Shao
Level, nitrogen oxides containing only trace in tail gas.Exhaust gas component after burning is mainly the oxygen of carbon dioxide, steam and residual
Gas.By gas concentration analyzer 6 to the control of oxygen proportion in burning rate accelerator for boiler, control the residual of remaining oxygen in tail gas
Amount, thus realize the control of the concentration of CO2 in tail gas, after tail gas removes steam, CO2 concentration reaches 80%～95%, thus
The CO2 in boiler exhaust gas is made to have the economic worth of recovery.
Above one embodiment of the present of invention is described in detail, but described content has been only the preferable enforcement of the present invention
Example, it is impossible to be considered the practical range for limiting the present invention.All impartial changes made according to the present patent application scope and improvement
Deng, within all should still belonging to the patent covering scope of the present invention.
Claims (7)
1. the combustion system without nitre that carbon dioxide can be reclaimed, it is characterised in that: include oxygen device for making
(1), described oxygen device for making (1) connects oxygen surge tank (2), and described oxygen surge tank (2) connects has gas mixing ratio to fill
Putting (3), the mixed gas outlet (32) of described gas mixing ratio device (3) connects boiler fan (4), described boiler fan
(4) connection has burner (5), the side of described burner (5) to be provided with fuel supply device (10), described burner
(5) waste gas outlet is connected to carbon dioxide recovering apparatus (9) and exhaust gas cooler (7), and described exhaust gas cooler (7) is even
Being connected to tail gas buffer (8), described tail gas buffer (8) is connected with described gas mixing ratio device (3).
A kind of combustion system without nitre that carbon dioxide can be reclaimed the most according to claim 1, it is characterised in that: institute
State gas mixing ratio device (3) include gas proportioning device (31) and be separately positioned on first on described gas proportioning device (31)
Air inlet (33) and the second air inlet (34), described first air inlet (33) is connected with described tail gas buffer (8), and described second
Air inlet (34) is connected with described oxygen surge tank (2).
A kind of combustion system without nitre that carbon dioxide can be reclaimed the most according to claim 2, it is characterised in that: institute
State and between oxygen surge tank (2) and described second air inlet (34), be provided with gas flow meter (35).
A kind of combustion system without nitre that carbon dioxide can be reclaimed the most according to claim 1, it is characterised in that: institute
State burner (5) and include boiler (51) or kiln.
A kind of combustion system without nitre that carbon dioxide can be reclaimed the most according to claim 4, it is characterised in that: institute
State and between fuel supply device (10) and described boiler (51) or kiln, be provided with switching valve (52) and check valve (53).
6. according to a kind of combustion system without nitre that carbon dioxide can be reclaimed described in claim, it is characterised in that: institute
State and between burner (5) and described carbon dioxide recovering apparatus (9), be provided with gas concentration analyzer (6).
A kind of combustion system without nitre that carbon dioxide can be reclaimed the most according to claim 1, it is characterised in that: institute
State and on exhaust gas cooler (7), be respectively arranged with cooling water inlet (12) and coolant outlet (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610373796.4A CN105889969A (en) | 2016-05-30 | 2016-05-30 | Nitrate-free combustion system capable of recycling carbon dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610373796.4A CN105889969A (en) | 2016-05-30 | 2016-05-30 | Nitrate-free combustion system capable of recycling carbon dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105889969A true CN105889969A (en) | 2016-08-24 |
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ID=56710497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610373796.4A Pending CN105889969A (en) | 2016-05-30 | 2016-05-30 | Nitrate-free combustion system capable of recycling carbon dioxide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059035A (en) * | 2018-08-31 | 2018-12-21 | 田军 | A kind of flue gas recirculation carbon dioxide recovery system, in accordance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101336353A (en) * | 2005-11-28 | 2008-12-31 | 电源开发株式会社 | Disposal method and equipment for exhaust gas from combustion system |
| US20090249988A1 (en) * | 2008-04-07 | 2009-10-08 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Apparatus and Process for Oxycombustion with CO2 Capture |
| CN101874181A (en) * | 2007-11-26 | 2010-10-27 | 乔治洛德方法研究和开发液化空气有限公司 | Adapting of an oxy-combustion plant to energy availability and to the amount of co2 to be trapped |
| CN204494467U (en) * | 2015-03-12 | 2015-07-22 | 衡水合丰化工设备制造有限公司 | A kind of novel energy-saving environment-friendly flame furnace system |
| CN205825096U (en) * | 2016-05-30 | 2016-12-21 | 广东上典环境保护工程有限公司 | A kind of combustion system without nitre that carbon dioxide can be reclaimed |
-
2016
- 2016-05-30 CN CN201610373796.4A patent/CN105889969A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101336353A (en) * | 2005-11-28 | 2008-12-31 | 电源开发株式会社 | Disposal method and equipment for exhaust gas from combustion system |
| CN101874181A (en) * | 2007-11-26 | 2010-10-27 | 乔治洛德方法研究和开发液化空气有限公司 | Adapting of an oxy-combustion plant to energy availability and to the amount of co2 to be trapped |
| US20090249988A1 (en) * | 2008-04-07 | 2009-10-08 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Apparatus and Process for Oxycombustion with CO2 Capture |
| CN204494467U (en) * | 2015-03-12 | 2015-07-22 | 衡水合丰化工设备制造有限公司 | A kind of novel energy-saving environment-friendly flame furnace system |
| CN205825096U (en) * | 2016-05-30 | 2016-12-21 | 广东上典环境保护工程有限公司 | A kind of combustion system without nitre that carbon dioxide can be reclaimed |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059035A (en) * | 2018-08-31 | 2018-12-21 | 田军 | A kind of flue gas recirculation carbon dioxide recovery system, in accordance |
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| PB01 | Publication | ||
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Application publication date: 20160824 |
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| RJ01 | Rejection of invention patent application after publication |