CN100467945C - Thermal storage type moving bed combustion device using combustible low-calorific-value solid fuel - Google Patents
Thermal storage type moving bed combustion device using combustible low-calorific-value solid fuel Download PDFInfo
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- CN100467945C CN100467945C CNB2006101235616A CN200610123561A CN100467945C CN 100467945 C CN100467945 C CN 100467945C CN B2006101235616 A CNB2006101235616 A CN B2006101235616A CN 200610123561 A CN200610123561 A CN 200610123561A CN 100467945 C CN100467945 C CN 100467945C
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Abstract
The invention relates to a reheating burning device in moving bed by igniting solid fuel with low heating value, comprising furnace [1] and combustion chamber [2]. Fuel input port [3] of combustion chamber is set on the top and the bottom is slag discharge port [9]. Inner cavity [4] of the combustion chamber spreads gradually from top to bottom and wind inlet [7] is opened on the left-right sides. Regenerator [5] is filled into the left-right sides of furnace and on each regenerator two wind doors are assembled. Each channel [6] formed by regenerator is connected with wind inlet [7] of combustion chamber. Desulfuration catalyst is loaded into the regenerator [5]. In the invention solid fuel moves slowly through the combustion chamber from top to bottom and high-pressure heat exchanger face almost is not damaged, safety and stability, lower depreciation charge, high running parameter and low cost. SO<SUB>2</SUB> can be transmitted to SO<SUB>3</SUB> so as to produce inorganic fertilizer in furnace conveniently. The exhaust quality of SO<SUB>2</SUB> is lower than national standard largely.
Description
Technical field
The present invention relates to the burner of Industrial Boiler, is a kind of thermal storage type moving bed combustion device of using combustible low-calorific-value solid fuel specifically.
Background technology
There is following shortcoming in existing burning device of circulating fluidized bed:
Desulfurization degree is low, desulfurization expense height.As station boiler, every kilowatt of installation desulfurization is made an investment in about 800 yuan, accounts for gross investment 11%, per kilogram SO
2The desulfurization expense reach about 0.4 yuan, so most power plant all spend so big expense to invest desulfurization from former, so most SO
2All be discharged into atmosphere, contaminated environment.
There is potential safety hazard.Swiftly flowing fuel particle is to the abrasion of high pressure endothermic tube and that pipe explosion accident takes place is more common.
The construction costs height, depreciation cost height, cost height.Because can't be directly with SO at stove
2Transform, desulfurizer is set in addition.
Summary of the invention
The thermal storage type moving bed combustion device that the purpose of this invention is to provide a kind of safe and reliable, using combustible low-calorific-value solid fuel that cost is low.
The thermal storage type moving bed combustion device of using combustible low-calorific-value solid fuel provided by the invention, mainly be made up of body of heater, combustion chamber, the fuel dog-house of combustion chamber is installed in the top, and the bottom is a slag-drip opening, the inner chamber of combustion chamber is the flaring shape from top to bottom, and the left and right sides has air inlet; Body of heater the right and left is filled with heat storage respectively, and the heat storage on every limit all is equipped with two air doors, connects by the passage of heat storage formation and the air inlet of combustion chamber separately; In heat storage, be mounted with desulphurization catalyst.
Because the present invention uses under solid fuel is full of the situation of combustion chamber inner chamber, the fuel dog-house of combustion chamber is installed in the top, and it is convenient to be convenient to bin stock and charging, and can remain solid fuel and be full of the combustion chamber inner chamber.
Smooth and easy for guaranteeing deslagging, this slag-drip opening is formed by two dreg discharging rollers that are installed in the bottom, combustion chamber, when dreg discharging roller rotates, the cinder extruding can be taken out of and drain.
The inner chamber of combustion chamber of the present invention is the flaring shape from top to bottom, solid fuel can be guaranteed under the situation that is full of the combustion chamber inner chamber,, the combustion chamber can be from up to down moved through lentamente along with solid-fuelled combustion loss, make things convenient for deslagging, alleviate the wearing and tearing of solid fuel the high pressure heat-transfer surface.
The present invention is filled with heat storage respectively at body of heater the right and left, and two separate air doors are installed, four air doors alternately open and close about making, high temperature hot gas alternating current in combustion air and the combustion chamber is through left and right sides heat storage, through the high temperature combustion air of left and right sides heat storage preheating from a left side or the right laterally blow over fuel bed, fuel bed is burnt under higher origin temp,, also can produce sufficiently high ignition temperature even use low-calorific-value solid fuel.
The present invention is filled with heat storage respectively at body of heater the right and left, and desulphurization catalyst is loaded in 900 ℃～400 ℃ the temperature section of heat storage, with SO
2Transfer SO to
3, in the tail gas clean-up flow process, make dilute sulfuric acid again, be further used for producing phosphate fertilizer.The effect of doing like this need to consume alkaloids and sulfur method that product will look for local heap to fill out than original, can reduce the desulfurization expense greatly.
Endothermic tube of the present invention can be installed in both sides, the left and right sides, combustion chamber, and the thermal-flame that utilizes the combustion chamber is to its radiant heat transfer.Such benefit is because conduction of radiation ratio and convection heat transfer' heat-transfer by convection speed height, and traditional non-heat accumulating type boiler need expend the low temperature heat energy that a large amount of steel are used to absorb convection section, the present invention puts aside heat energy with a large amount of ceramic honeycombs, has substituted a large amount of convection section steel pipes of non-heat accumulating type boiler.The used steel pipe of the present invention has only 1/10th of traditional non-heat accumulating type boiler specifically, and total cost has only 1/3rd.
In a word, the present invention has following advantage:
1, can be easily in stove with SO
2Transfer SO to
3, produce chemical fertilizer, turn waste into wealth SO
2Discharge capacity is significantly less than national standard.
2, solid fuel from up to down moves through the combustion chamber lentamente in the combustion chamber, and the high pressure heat-transfer surface is not wearing and tearing almost, and safe and reliable, depreciation cost is low, the operational factor height, and cost is low.
3, construction costs is low, and depreciation cost is low, and cost is low.
Description of drawings
Fig. 1 is a cross section view of the present invention;
Fig. 2 is the vertical view of Fig. 1.
The specific embodiment
With reference to Fig. 1, Fig. 2, the moving bed combustion device of using combustible low-calorific-value solid fuel provided by the invention, mainly by body of heater [1], combustion chamber [2] is formed, the fuel dog-house [3] of combustion chamber [2] is installed in the top, make things convenient for charging and bin stock, the bottom is slag-drip opening [9], form by two dreg discharging rollers [8] that are installed in bottom, combustion chamber [2], the inner chamber of combustion chamber [4] is the flaring shape from top to bottom, its cross section can be up-narrow and down-wide as shown in Figure 1 trapezoidal, the combustion chamber inner chamber [4] in vertical another cross section, cross section can be rectangle and also can be up-narrow and down-wide trapezoidal therewith, and the two trapezoidal waists and the angle sum of horizontal plane are between 60 to 170 °, the left and right sides, combustion chamber has air inlet [7], and endothermic tube is installed in the both sides, combustion chamber, promptly trapezoidal Liang Yaochu; Body of heater [1] the right and left is filled with heat storage [5] respectively, heat storage [5] can adopt as cellular ceramic material to be made, heat storage [5] is equipped with separate two air doors [10], the passage [6] that forms by heat storage is connected with the air inlet [7] of combustion chamber after the pooling separately, is separated by partition wall [11] between the left and right sides heat storage [5].
During use, earlier solid fuel is added to the inner chamber [4] that solid fuel is full of the combustion chamber by fuel dog-house [3], at interior 900 ℃～400 ℃ temperature section of heat storage [5], load desulphurization catalyst, under programmable controller controls, four air doors are are alternately opened and closed, high temperature hot gas alternating current in combustion air and the combustion chamber is through left and right sides heat storage [5], left and right sides heat storage [5] is alternately put aside and is being discharged heat, such process hockets at left and right sides heat storage [5], move in endless cycles the SO that high temperature hot gas is carried
2Under the effect of desulphurization catalyst, be converted into SO
3Through the high temperature combustion air of left and right sides heat storage [5] preheating from a left side or the right laterally blow over fuel bed, fuel bed is burnt under higher origin temp, fuel from up to down moves lentamente, cinder is discharged by bottom slag-drip opening [9], during operation and remain the inner chamber [4] that solid fuel is full of the combustion chamber.And tail gas can be made dilute sulfuric acid in purification process, is further used for producing phosphate fertilizer.
The present invention is mainly used in steam boiler, also is applied to high temperature hot-blast furnace, and section etc. is melted in the preheating of metallurgical furnace.
Claims (4)
1, a kind of thermal storage type moving bed combustion device of using combustible low-calorific-value solid fuel, mainly form by body of heater [1], combustion chamber [2], the fuel dog-house [3] of combustion chamber is installed in the top, the bottom is slag-drip opening [9], the inner chamber [4] that it is characterized in that the combustion chamber is the flaring shape from top to bottom, and the left and right sides has air inlet [7]; Body of heater the right and left is filled with heat storage [5] respectively, and the heat storage on every limit all is equipped with two air doors [10], and the passage [6] that forms by heat storage is connected with the air inlet [7] of combustion chamber separately; In heat storage [5], be mounted with desulphurization catalyst.
2, the thermal storage type moving bed combustion device of using combustible low-calorific-value solid fuel according to claim 1, inner chamber [4] cross section that it is characterized in that the combustion chamber are up-narrow and down-wide trapezoidal.
3, the thermal storage type moving bed combustion device of using combustible low-calorific-value solid fuel according to claim 1 is characterized in that slag-drip opening [9] is formed by two dreg discharging rollers [8] that are installed in the bottom, combustion chamber.
4, the thermal storage type moving bed combustion device of using combustible low-calorific-value solid fuel according to claim 1 is characterized in that desulphurization catalyst is loaded in 900 ℃～400 ℃ temperature sections of heat storage [5].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101235616A CN100467945C (en) | 2006-11-09 | 2006-11-09 | Thermal storage type moving bed combustion device using combustible low-calorific-value solid fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101235616A CN100467945C (en) | 2006-11-09 | 2006-11-09 | Thermal storage type moving bed combustion device using combustible low-calorific-value solid fuel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1952477A CN1952477A (en) | 2007-04-25 |
| CN100467945C true CN100467945C (en) | 2009-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101235616A Expired - Fee Related CN100467945C (en) | 2006-11-09 | 2006-11-09 | Thermal storage type moving bed combustion device using combustible low-calorific-value solid fuel |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344246A (en) * | 2008-07-21 | 2009-01-14 | 梁兆志 | Non-gun slurry-throwing heat-accumulation moving bed boiler |
| RU2622139C2 (en) * | 2013-01-18 | 2017-06-13 | Бейджин Шеньву Энвайронмент энд Энерджи Текнолоджи Ко., Лтд. | Powdered fuel boiler with rotary type cycle heater |
| CN103672869B (en) * | 2013-01-18 | 2016-07-06 | 北京神雾环境能源科技集团股份有限公司 | Can bleeder pulverized-coal fired boiler |
| CN103672872B (en) * | 2013-01-18 | 2016-08-10 | 北京神雾环境能源科技集团股份有限公司 | Carrying heat storage rotates the particle fuel boiler of commutation heater |
| CN103672843B (en) * | 2013-01-18 | 2015-11-25 | 北京神雾环境能源科技集团股份有限公司 | Carrying heat storage rotates the powdered solid fuel boiler of commutation heater |
-
2006
- 2006-11-09 CN CNB2006101235616A patent/CN100467945C/en not_active Expired - Fee Related
Non-Patent Citations (8)
| Title |
|---|
| 蓄热式燃烧技术的工业应用. 邴国强，孙艳萍.化学工程师. 2006 |
| 蓄热式燃烧技术的工业应用. 邴国强，孙艳萍.化学工程师. 2006 * |
| 蓄热燃烧技术在工业炉上的合理应用. 孙全应.工业炉，第27卷第1期. 2005 |
| 蓄热燃烧技术在工业炉上的合理应用. 孙全应.工业炉，第27卷第1期. 2005 * |
| 高温空气燃烧技术的发展与应用. 吴存宽，吴彬林.工业炉，第25卷第2期. 2003 |
| 高温空气燃烧技术的发展与应用. 吴存宽，吴彬林.工业炉，第25卷第2期. 2003 * |
| 高温空气燃烧技术的节能、环保效益. 谢民，萧琦.信息产品与节能. 2003 |
| 高温空气燃烧技术的节能、环保效益. 谢民，萧琦.信息产品与节能. 2003 * |
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| CN1952477A (en) | 2007-04-25 |
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