CN202274482U - Energy-saving device for oxygen-enriched gas atomized liquid catalyst boiler - Google Patents
Energy-saving device for oxygen-enriched gas atomized liquid catalyst boiler Download PDFInfo
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- CN202274482U CN202274482U CN2011204013394U CN201120401339U CN202274482U CN 202274482 U CN202274482 U CN 202274482U CN 2011204013394 U CN2011204013394 U CN 2011204013394U CN 201120401339 U CN201120401339 U CN 201120401339U CN 202274482 U CN202274482 U CN 202274482U
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- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses an energy-saving device for an oxygen-enriched gas atomized liquid catalyst boiler. The energy-saving device comprises liquid catalyst preparation equipment, oxygen-enriched air generation equipment and gas-liquid atomization equipment, wherein the gas-liquid atomization equipment is used for being connected with the boiler; and both the liquid catalyst preparation equipment and the oxygen-enriched air generation equipment are connected with the gas-liquid atomization equipment. According to the energy-saving device for the oxygen-enriched gas atomized liquid catalyst boiler, a liquid composite coal combustion catalyst and an oxygen enrichment technology are integrated, the oxygen-enriched air and pressure are utilized, and an atomized liquid catalyst and coal powder are synchronously blown into the boiler, so that the release amount of volatile constituents in the coal powder and a combustion rate can be effectively increased, an ignition process of coal is facilitated, the temperature of flame is increased, the heat loss caused by chemical incomplete combustion and mechanical incomplete combustion is lowered, and the heat efficiency of the boiler is increased.
Description
Technical field
The utility model is the energy saver that is used for coal-burning boiler about a kind of.
Background technology
Along with the rapid growth of China's economic construction, many demands for energy also reach 10% growth rate with consuming.According to statistics, get into 2010, only the demand of coal is near 3,000,000,000 tons in China, and wherein the coal more than 60% is consumed by the thermal power plant.The now coal-fired generated energy in 1 year of thermal power plant of China approximately is 2,000,000,000,000 degree, and every degree electricity manys consumption 50 gram coals than developed country, and 1 year just 100,000,000 tons of coal that consume calculates promptly 60,000,000,000 yuans by 600 yuan per ton more; If 1 gram/KWH is lowered in our coal consumption, the whole nation is equivalent to practice thrift 2,600,000 tons of standard coals, and this is equivalent to our the country's coal production in 1 year in a super-huge colliery.Therefore, to the coal-fired powder boiler of China's thermoelectricity industry, develop the novel technology of economizing on coal, meaning is very great.
At present, domestic various dissimilar coal-saving agent products, majority are to be main with solid, and minority is the liquid coal-saving agent.These products are mainly used in small-sized coal-burning boiler, and the occupation mode of economizing on coal is: manual type is mixed the back with the solid coal-saving agent and is used with coal; The liquid coal-saving agent then is to spray to dump with simple and easy physical operations.These two kinds of artificial raw modes are difficult in practice to mix coal-saving agent and coal, and operation inconvenience is difficult to quantitatively, thereby is difficult to obtain reliable and stable result.Present homemade coal-saving agent is not shown in large-scale coal-fired powder boiler as yet, particularly uses successful story in the thermoelectricity industry coal powder furnace.
Oxygen-enriched combustion technology 70-80 in the last century age gets into the development phase in the world, at steel industry, as using the oxygen-enriched coal spray technical matters in the blast furnace, to lower coke-iron-rate, improves production capacity and reduces burnt consumption.China promotes existing 10 years history in the oxygen-enriched coal spray technological development of steel industry, and the used oxygen enrichment technology equipment of the industry is mainly the deep cooling oxygenerating technology, and high concentration oxygen is introduced in the blast furnace with air dilution back.Nonferrous metallurgy particularly copper mine stone smelt system blister copper industry, using oxygen-enriched air (35%) can be energy-conservation 25%, increases product yield simultaneously more than 20%, the existing ripe application of the oxygen-enriched combusting of this industry.The embrane method oxygenerating technology was risen by Japan, the U.S. the eighties in last century; Because embrane method system oxygen has its advantage in low concentration (30%) and medium and small system tolerance scope; So in medium and small boiler and kiln field, like existing successful Application such as glass furnace, ceramic kiln, small-sized heating furnaces.China is at the early-stage with research and application and development that the embrane method oxygenerating technology is used for the combustion-supporting aspect of Thermal Equipment.
The utility model content
The purpose of the utility model is the deficiency to prior art, and a kind of oxygen rich gas spraying liquid catalyst energy-saving device of boiler that can boiler thermal output is provided.
For realizing above-mentioned purpose; The utility model has adopted following technical scheme: a kind of oxygen rich gas spraying liquid catalyst energy-saving device of boiler; Comprise that liquid catalyst blending equipment, oxygen-enriched air generate equipment and be used to connect the gas-liquid atomization plant of boiler, said liquid catalyst blending equipment all is connected with said gas-liquid atomization plant with oxygen-enriched air generation equipment.
Further; Said liquid catalyst blending equipment comprises catalyst mother liquor tank, filler pipe road, the Agitation Tank with second liquid level controller, high pressure pump and the flowmeter with first liquid level controller; Said catalyst mother liquor tank and filler pipe road all are connected the inlet of said Agitation Tank; The liquid outlet connection of said Agitation Tank is made into liquid pipeline, and said flow is taken into account high pressure pump and is located at the said liquid pipeline that is made into, and the said liquid pipeline that is made into connects said gas-liquid atomization plant.Catalyst mother liquor tank and filler pipe road can be connected the same inlet that cooperates jar, also can be connected different inlets.The filler pipe road, be made into liquid pipeline and can form by one or more snippets pipeline, each section pipeline can adopt parallel connection, series connection or and the mode of tandem compound connect.
Further; Said liquid catalyst blending equipment also comprises another Agitation Tank with another said second liquid level controller; Said catalyst mother liquor tank and filler pipe road all are connected the inlet of said another Agitation Tank, and the liquid outlet of said another Agitation Tank connects the said liquid pipeline that is made into.
Further, the said liquid pipeline that is made into is provided with and is made into liquid filter and pressure sensor.
Further; Said oxygen-enriched air generation equipment comprises mechanical reciprocating vacuum pump, oxygen-enriched generator and high pressure positive blower; Said oxygen-enriched generator is connected between the gas outlet of air inlet and said high pressure positive blower of said mechanical reciprocating vacuum pump, and the gas outlet of said mechanical reciprocating vacuum pump connects said gas-liquid atomization plant.
Further, said oxygen-enriched generator comprises a plurality of rolling oxygen permeable membrane elements of parallel connection combination.
Further, said oxygen-enriched air generates equipment and also comprises air cleaner, and said air cleaner is connected the air inlet of said high pressure positive blower.
Further, the air inlet of said mechanical reciprocating vacuum pump and gas outlet all are connected with pressure sensor.
Further, said gas-liquid atomization plant comprises the gas-liquid atomizing lance.
The energy saver organic assembling advantage separately of chemical catalysis burning of oxygen-enriched combusting and coal; The equipmentization of making it and operation automation; Combustion characteristics and actual condition (variation of ature of coal and the variation of load) according to pulverized-coal fired boiler; Can follow the tracks of the furnace flame variation of temperature immediately, artificial or adjust this device automatically, the efficiency of combustion of coal dust in stove is improved and optimizes.
The function of energy saver is in the burner air channel of coal-fired powder boiler, to utilize oxygen-enriched air with after the liquid catalyst atomizing, through gas-liquid atomization plant and coal dust in the same way in the mixing jetting entering burner hearth.
The oxygen-enriched generator of energy saver adopts rolling oxygen permeable membrane form, and rolling oxygen permeable membrane component size is ф 200x1000, membrane component parallel connection Combination Design; The workflow of membrane component adopts negative-pressure operation, and the vavuum pump air inlet links to each other with the oxygen-enriched generator gas outlet, operating pressure-0.05～-0.09Mpa; Vavuum pump is that machinery is reciprocating type, outlet pressure 0.05～0.25Mpa; Oxygen-enriched generator work wind is supplied with by high pressure positive blower, and blast is at 3000～5000Pa, and work wind is removed air dust, filtering accuracy 100 μ through the cotton filtration of boxboard formula porous; This oxygen-enriched air generates equipment can be designed to produce oxygen concentration 25～35%, gas production 50～1200m
3/ h.
The configuration proportion of catalyst mother liquor and water is to utilize the liquid level controller to realize.Two Agitation Tanks that have agitator can be set, can a dosing and another work, thus realize continuous liquid material course of conveying; High pressure pump can adopt corrosion resistant centrifugal multistage pump multiple centrifugal pump; Liquid material carries Yang Chengke to reach 160m～200m.The liquid material delivery technology can need not the manually-operated operation by the PLC programme-control.
In same pressure space, this pressure space is by having certain pressure gas filling (oxygen-enriched air) through pipe influx separately for gas-liquid, and in the same outlet in gas-liquid atomizing lance center line port, makes the atomization of liquid through high flow rate gas; The rational Match of gas pressure and flow and fluid pressure and flow has determined that final atomizing effect or state are granular size and the jet length that liquid is atomized.Atomizing optimum state parameter: gas pressure 0.05～0.25Mpa, fluid pressure 0.1～0.3Mpa.
Energy saver is suitable for allocating liquid object (not containing solids); Supporting with it liquid catalyst is applicable to the coal-fired powder boiler of large, medium and small type; It is to realize practicing thrift coal-fired purpose through catalytic combustion.
The beneficial effect of the utility model is: this device is integrated liquid compound coal combustion catalyst and oxygen enrichment technology; Utilize oxygen-enriched air and pressure to be blown in the stove synchronously through spraying liquid catalyst and coal dust; Can improve the burst size and the burn rate of fugitive constituent in the coal dust effectively, promote the ignition process of coal, improve flame temperature; And then reduce chemically incomplete combustion and heat loss due to combustibles in refuse, improve boiler thermal output.
Description of drawings
Fig. 1 is the structural representation of this embodiment.
The specific embodiment
Combine accompanying drawing that the utility model is done further explain through the specific embodiment below.
This embodiment provides a kind of oxygen rich gas spraying liquid catalyst energy-saving device of boiler.This energy saver comprises that oxygen-enriched air generates equipment, liquid catalyst blending equipment and gas-liquid atomization plant.The function of this energy saver is that coal-fired liquid catalyst is sprayed in the boiler furnace along with coal burner mixes in the same way through oxygen-enriched air atomizing back, realizes the pulverized coal flame catalytic combustion, thereby reaches the purpose of energy-saving and smoke-removing.
As shown in Figure 1; The liquid catalyst blending equipment comprises the catalyst mother liquor tank 10 that has the first liquid level controller 11; Suction pumps 17; Running water filter 4,7 has Agitation Tank A, the B of the agitator 24,32 and the second liquid level controller 25,33, is made into liquid filter 52,59; High pressure pump 67,74; Pressure sensor 2,9,14,16,48,63,79, flow sensor 84, motor-driven valve 0,19,22,30,38,40,43,47,50,58,53,61,64,72,70,77,81,82 and hand-operated valve 1,3,5,6,8,18,20,21,23,29,31,37,39,41,42,44,45,49,51,56,57,54,55,60,62,65,66,71,73,68,69,75,76,78,80,83.During work; Catalyst mother liquor in the catalyst mother liquor tank 10 is sent into Agitation Tank A through suction pumps 17; Behind the needed volume of the second liquid level controller, 24 meterings, motor-driven valve 19 unlatchings add water to volume required automatically, switch to Agitation Tank B afterwards and add catalyst mother liquor and Jia Shui; After Agitation Tank A added mother liquor and adds water arrival desired location, liquid level signal indication high pressure pump 67 started.The workflow that system is accomplished automatic liquid matching, carried continuously by PLC.
For this liquid catalyst blending equipment, running water is through the inlet of filler pipe road 93 connection Agitation Tank A, B, and the liquid outlet connection of Agitation Tank A, B is made into liquid pipeline 94, and high pressure pump 67,74 and flowmeter 84 are located at this and are made on the liquid pipeline 94.Two are made into liquid filter 52,59 and respectively the liquid that is made into for preparing of Agitation Tank A, B output are filtered, and the liquid that is made into after the filtration is carried by high pressure pump 67,74 respectively.
Oxygen-enriched air generation equipment comprises mechanical reciprocating vacuum pump 91, oxygen-enriched generator 89, air cleaner 86, high pressure positive blower 87, pressure sensor 88,92 and vacuum transducer 90.Air cleaner 86 is taked box Combination Design with high pressure positive blower 87.Oxygen-enriched generator is a case construction, and it has a plurality of rolling oxygen permeable membrane elements of parallel connection, and lower box is the high-pressure blast bellows.Air after will being filtered by high pressure positive blower 87 is sent into the air duct of oxygen-enriched generator; Under vavuum pump 91 suction functions; Oxygen-enriched air is collected and is passed through air duct through the oxygen-enriched generator central tube and gets into vavuum pump 91 air inlets; Oxygen-enriched air is discharged by vavuum pump 91 gas outlets with the malleation form, and air more than needed enters atmosphere from the oxygen-enriched generator other end; The oxygen nitrogen separation of oxygen-enriched generator is 2 ,-0.06～-0.08Mpa under, oxygen-rich concentration can reach 28～32%.The major technique characteristics of this generation equipment are: adopt mechanical reciprocating vacuum pump 91 for oxygen-enriched generator provides operating pressure, remove from moisture trap, oxygen-enriched air dehumidification, preheating and the water ring vacuum pump that must join with water ring vacuum pump in the lot of consumption of water and the pump chamber because the temperature rise of water and fouling.After adopting mechanical reciprocating vacuum pump 91, the technological process that oxygen-enriched air generates equipment becomes simply, and the device context installation is compared with water ring vacuum pump with operation easier and diminished, and the trouble point tails off.
By the oxygen-enriched air that mechanical reciprocating vacuum pump 91 is discharged, adjustable in pressure is put in order model 0.05～0.25Mpa, liquid catalyst discharge pressure scope 0.1～0.3Mpa.Oxygen-enriched air and liquid catalyst pass through pipeline separately; Come together in the same pressure space in the gas-liquid atomization plant; This pressure space is by the oxygen rich gas filling with certain pressure; And shared outlet of gas-liquid in the gas-liquid atomizing lance center line port of gas-liquid atomization plant, make the atomization of liquid through the high flow rate oxygen rich gas; The rational Match of oxygen rich gas pressure and flow and fluid pressure and flow has determined that final atomizing effect or state are granular size and the jet length that liquid is atomized.Gas-liquid atomizing lance and boiler coal-ash burner be mounting arrangements in the same way, its quantity and coal burner quantity 1 to 1 or 2 to 1 couplings.
When liquid catalyst prepares, can to select transition metal and alkaline-earth metal salt for use be main and activating agent, dispersant as the compound prescription of assistant agent, in the heated and stirred still, fully dissolve with water, be sub-packed in the dosing container.
Purpose according to the utility model; Promptly to the coal-fired powder boiler of the above generating set of China power industry 200MW, develop the emission-reduction technology process system of economizing on coal with practical value, the prominent features of this technical matters is: organic assembling the chemical catalysis of oxygen-enriched combusting and the coal advantage separately of burning; The equipmentization of making it and operation automation; According to combustion characteristics and the variation of actual condition ature of coal and the variation of load of pulverized-coal fired boiler, can follow the tracks of the furnace flame variation of temperature immediately, artificial or adjust this energy saver automatically; The efficiency of combustion of coal dust in stove is improved and optimizes, and then reach the purpose of energy-saving and emission-reduction.
During practical implementation:
1) preferred catalyst kind is selected to adopt chemical complex process to prepare liquid composite catalyst to high, the water miscible good polynary catalyst of coal combustion catalytic activity;
2) design, type selecting, processing liquid catalyst blending equipment, gas-liquid atomization plant;
3) design, type selecting, processing oxygen-enriched air generate equipment;
4) PLC control system programming, the electric circuit design;
5) assembling, the test of water route UNICOM;
6) on-the-spot installation, debugging, operation.
Embodiment 1:
Present technique process system equipment, through on-the-spot Installation and Debugging, independent following with boiler disconnected couplet start debugging and operation result:
Embodiment 2:
Present technique process system equipment, through on-the-spot Installation and Debugging, following with boiler joint-trial operation result:
Annotate: 1, flame temperature test, adopt the hand-held infrared thermometer;
2, operating mode 1～5, is boiler actual motion load variations; Boiler 670T/h, the 200MW unit;
3, temperature test collection, for 8 flame-observing holes of boiler before and after equipment puts into operation, the arithmetic mean of instantaneous value that temperature becomes under the same load;
4, cat.-A-B: be that four kinds of conditions that liquid catalyst puts into operation change.
Above content is the further explain that combines concrete embodiment that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection domain of the utility model.
Claims (9)
1. oxygen rich gas spraying liquid catalyst energy-saving device of boiler; It is characterized in that: comprise that liquid catalyst blending equipment, oxygen-enriched air generate equipment and be used to connect the gas-liquid atomization plant of boiler, said liquid catalyst blending equipment all is connected with said gas-liquid atomization plant with oxygen-enriched air generation equipment.
2. oxygen rich gas spraying liquid catalyst energy-saving device of boiler as claimed in claim 1; It is characterized in that: said liquid catalyst blending equipment comprises catalyst mother liquor tank, filler pipe road, the Agitation Tank with second liquid level controller, high pressure pump and the flowmeter with first liquid level controller; Said catalyst mother liquor tank and filler pipe road all are connected the inlet of said Agitation Tank; The liquid outlet connection of said Agitation Tank is made into liquid pipeline; Said flow is taken into account high pressure pump and is located at the said liquid pipeline that is made into, and the said liquid pipeline that is made into connects said gas-liquid atomization plant.
3. oxygen rich gas spraying liquid catalyst energy-saving device of boiler as claimed in claim 2; It is characterized in that: said liquid catalyst blending equipment also comprises another Agitation Tank with another said second liquid level controller; Said catalyst mother liquor tank and filler pipe road all are connected the inlet of said another Agitation Tank, and the liquid outlet of said another Agitation Tank connects the said liquid pipeline that is made into.
4. oxygen rich gas spraying liquid catalyst energy-saving device of boiler as claimed in claim 3 is characterized in that: the said liquid pipeline that is made into is provided with and is made into liquid filter and pressure sensor.
5. like any described oxygen rich gas spraying liquid catalyst energy-saving device of boiler among the claim 2-4; It is characterized in that: said oxygen-enriched air generation equipment comprises mechanical reciprocating vacuum pump, oxygen-enriched generator and high pressure positive blower; Said oxygen-enriched generator is connected between the gas outlet of air inlet and said high pressure positive blower of said mechanical reciprocating vacuum pump, and the gas outlet of said mechanical reciprocating vacuum pump connects said gas-liquid atomization plant.
6. oxygen rich gas spraying liquid catalyst energy-saving device of boiler as claimed in claim 5 is characterized in that: said oxygen-enriched generator comprises a plurality of rolling oxygen permeable membrane elements of parallel connection combination.
7. oxygen rich gas spraying liquid catalyst energy-saving device of boiler as claimed in claim 6 is characterized in that: said oxygen-enriched air generates equipment and also comprises air cleaner, and said air cleaner is connected the air inlet of said high pressure positive blower.
8. oxygen rich gas spraying liquid catalyst energy-saving device of boiler as claimed in claim 7, it is characterized in that: the air inlet of said mechanical reciprocating vacuum pump and gas outlet all are connected with pressure sensor.
9. like any described oxygen rich gas spraying liquid catalyst energy-saving device of boiler among the claim 2-4, it is characterized in that: said gas-liquid atomization plant comprises the gas-liquid atomizing lance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204013394U CN202274482U (en) | 2011-10-20 | 2011-10-20 | Energy-saving device for oxygen-enriched gas atomized liquid catalyst boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204013394U CN202274482U (en) | 2011-10-20 | 2011-10-20 | Energy-saving device for oxygen-enriched gas atomized liquid catalyst boiler |
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| CN202274482U true CN202274482U (en) | 2012-06-13 |
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| CN2011204013394U Expired - Fee Related CN202274482U (en) | 2011-10-20 | 2011-10-20 | Energy-saving device for oxygen-enriched gas atomized liquid catalyst boiler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672939A (en) * | 2012-09-03 | 2014-03-26 | 阿尔斯通技术有限公司 | Method of operating an oxy-fuel boiler system |
| CN111121081A (en) * | 2020-01-18 | 2020-05-08 | 上海穗杉实业股份有限公司 | Energy-saving method and device for oxygen-enriched catalytic combustion of circulating fluidized bed |
-
2011
- 2011-10-20 CN CN2011204013394U patent/CN202274482U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672939A (en) * | 2012-09-03 | 2014-03-26 | 阿尔斯通技术有限公司 | Method of operating an oxy-fuel boiler system |
| CN111121081A (en) * | 2020-01-18 | 2020-05-08 | 上海穗杉实业股份有限公司 | Energy-saving method and device for oxygen-enriched catalytic combustion of circulating fluidized bed |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120613 Termination date: 20141020 |
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| EXPY | Termination of patent right or utility model |