CN104713058A - Self-deoxidization waste heat boiler suitable for sulfur-containing fuel - Google Patents
Self-deoxidization waste heat boiler suitable for sulfur-containing fuel Download PDFInfo
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- CN104713058A CN104713058A CN201310684868.3A CN201310684868A CN104713058A CN 104713058 A CN104713058 A CN 104713058A CN 201310684868 A CN201310684868 A CN 201310684868A CN 104713058 A CN104713058 A CN 104713058A
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- boiler
- deoxygenation
- waste heat
- flash vessel
- heating furnace
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- 239000002918 waste heat Substances 0.000 title claims abstract description 57
- 239000000446 fuel Substances 0.000 title claims abstract description 24
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title abstract 2
- 229910052717 sulfur Inorganic materials 0.000 title abstract 2
- 239000011593 sulfur Substances 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 238000011084 recovery Methods 0.000 claims abstract description 18
- 238000006392 deoxygenation reaction Methods 0.000 claims description 52
- 238000010438 heat treatment Methods 0.000 claims description 34
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 239000000779 smoke Substances 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 14
- 239000003546 flue gas Substances 0.000 description 14
- 239000003517 fume Substances 0.000 description 14
- 230000007797 corrosion Effects 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 12
- 238000012546 transfer Methods 0.000 description 12
- 239000002253 acid Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000007701 flash-distillation Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 238000010795 Steam Flooding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention provides a self-deoxidization waste heat boiler suitable for sulfur-containing fuel. The self-deoxidization waste heat boiler comprises a waste heat recovery device, a flash evaporator internally provided with a steam and water separator, a deoxidization water tank communicated with the flash evaporator, a steam pocket and an evaporator arranged in a flue. A heat absorption section and a heat release section of the waste heat recovery device are connected through an ascent pipe and a descent pipe, the heat absorption section is arranged in the flue, the steam pocket is connected with the evaporator through a circulation pipeline, a boiler water supply pipe is connected with a water inlet of the flash evaporator after passing through the heat release section, and a water outlet of the deoxidization water tank is connected with the steam pocket. The flash evaporator is adopted for deoxidization, heat energy used for deoxidization is smoke waste heat of the boiler, the temperature of exhausted smoke of the waste heat boiler can be effectively reduced, waste heat of the boiler is fully used, steam does not need to be extracted in the deoxidization process after the flash evaporator is additionally arranged, the steam amount of the boiler is saved, and the efficiency of the boiler is improved.
Description
Technical field
The present invention relates to a kind of waste heat boiler, particularly relate to a kind of be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler.
Background technology
The common equipment that Converter Residual Heat Boiler, using residual heat from kiln furnace boiler are converters, using residual heat from kiln furnace reclaims.In order to prevent oxygen corrosion equipment and pipeline, converter, using residual heat from kiln furnace boiler feedwater must deoxygenations, and converter, kiln self do not have oxygen-eliminating device, and therefore converter, using residual heat from kiln furnace boiler must install deaerating plant separately.
The deoxidation method adopted in conventional art has: chemical deoxidization, parsing deoxygenation, deaeration in condenser and thermal de-aeration.Chemical deoxidization expensive and after deoxygenation in water salt content increase, make water quality deterioration.When utilizing carbon dioxide to resolve deoxygenation, the carbon dioxide in water can be made to increase, easily cause equipment pipeline blockage, and adjustment management inconvenience.Deaeration in condenser needs complicated equipment, and equipment investment is large.It is the energy that thermal de-aeration needs with vapours, consumes a lot of personal steam.
And existing Converter Residual Heat Boiler and using residual heat from kiln furnace exhaust gas temperature very high, the potential of fume afterheat could not be made full use of.Containing sour gas in the flue gas of sulfurous fuels heating furnace discharge, when cigarette temperature is high, they can flow through each heating surface of boiler in the form of a vapor until be removed in desulfurizing tower; When cigarette temperature is lower than a certain temperature, they can be combined into sulfuric acid with the steam in flue gas and corrode heat transmission equipment.More than the ratio of heat transfer coefficient flue gas between water and heat exchanger wall and the large order of magnitude of the heat transfer coefficient between heat exchanger wall.Therefore, heat exchanger wall surface temperature is closer to water temperature.The conventional method of heat exchanger generation cold end corrosion is avoided to be by improving the flue-gas temperature at heat exchanger place.If the water temperature of heat exchange is lower, only have that exhaust gas temperature is very high just likely ensures that the wall surface temperature of heat exchanger cold end corrosion does not occur higher than acid dew-point temperature, high fume temperature causes waste heat boiler efficiency significantly to reduce.Even if exhaust gas temperature is very high, when the concentration of the sulfur dioxide in flue gas is higher, the cold end corrosion problem of heat exchanger is also very serious.Therefore, waste heat boiler high fume temperature is required for anticorrosion, that is wants to make full use of fume afterheat, needs the problem solving corrosion protection of equipment.
Chinese patent ZL201110415035.8, name is called from oxygen removing type afterheat generating system and electricity-generating method thereof, comprise condensing turbine, generator, condensate pump, oxygen-eliminating device, deaerating heater, feed pump, economizer, evaporimeter, drum, low temperature superheater, high temperature superheater, attemperator and collection vapour header, described drum or low temperature superheater or high temperature superheater or collection vapour header in the form of individual or the form of any combination be connected with oxygen-eliminating device by controlled thermal source supply pipeline, when deaerating heater absorbs waste heat quantity not sufficient, the drum or low temperature superheater or high temperature superheater that carry in system or collection vapour header is utilized to realize heat supply to oxygen-eliminating device.Waste heat in this patent utilization deaerating heater absorption boiler flue gas heats the water in oxygen-eliminating device, can reduce waste heat boiler exhaust gas temperature to a certain extent, improves waste heat recovery efficiency; But because the water of deaerating heater heating is from oxygen-eliminating device water outlet, water temperature is higher, constrain deaerating heater and utilize waste heat in flue, cigarette temperature of therefore discharging fume can not reduce effectively, does not play the effective object improving the waste heat recovery efficiency of waste heat boiler.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler, for solving waste heat boiler high fume temperature in prior art, and the heating source of oxygen-eliminating device is the problem that steam pumping affects boiler effect.
For achieving the above object and other relevant objects, the invention provides a kind of be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler, it comprises endotherm section, heat release section, tedge, down-comer, inside establish the flash vessel of steam-water separator, the deoxygenation water tank communicated with flash vessel, drum, and the evaporimeter be located in flue, described endotherm section is connected with down-comer by tedge with heat release section, endotherm section is located in described flue, described drum is connected by fall way with described evaporimeter, boiler feed pipe is connected with the water inlet of described flash vessel after described heat release section again, the delivery port of described deoxygenation water tank is connected with described drum.
Preferably, described boiler feed pipe is divided into two-way: main road and the branch road of drawing from described main road, described main road is directly connected with the water inlet of described flash vessel, and described branch road is connected with the water inlet of described flash vessel after described heat release section again.
Preferably, also comprise control system, and the first temperature sensor be located on described endotherm section, be located at the second temperature sensor of described flash vessel water inlet, and two control valves be located at respectively on described main road and branch road, described first temperature sensor, the second temperature sensor, control valve are all connected with described control system.
Preferably, the water temperature of described flash vessel water inlet is higher than 104 DEG C.
Preferably, also comprise the condensing turbine be connected with generator, the steam (vapor) outlet of described drum is connected with described condensing turbine.
Preferably, described condensing turbine is connected with condenser, and the outlet pipe of described condenser is connected with described branch road, and the outlet pipe of described condenser is provided with water pump.
Preferably, the top of described flash vessel is provided with steam drain, and described water inlet is located at the middle part of described flash vessel, and the bottom of described flash vessel is connected with described oxygen-eliminating device.
Preferably, the top of described flash vessel is also provided with safety relief valve.
Preferably, the two ends of described flue are respectively heating furnace and chimney.
Preferably, the exhaust outlet of one end connecting engine of described flue, the other end does not establish chimney.
As mentioned above, of the present invention be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler, there is following beneficial effect: the present invention adopts and boiler feedwater is first reached uniform temperature through the heat absorption of waste-heat recovery device endotherm section enters flash vessel and carry out flash distillation deoxygenation, without using other thermals source (as boiler draws gas), boiler feedwater enters deaerated water case after flash vessel deoxygenation, then enters drum and then go condensing turbine to do work.Flash vessel is adopted to carry out deoxygenation in the present invention, the heat energy that its deoxygenation utilizes is the fume afterheat of boiler self, can effectively reduce waste heat boiler exhaust gas temperature, the waste heat of boiler is fully used, and utilize flash vessel flash distillation deoxygenation not need to draw gas, save the quantity of steam of boiler self, improve boiler self effect; Make the Temperature of Working in economizer raise simultaneously, make the metallic walls surface temperature of boiler economizer higher than flue gas dew point temperature, the corrosion of acid dew can not occur.
Accompanying drawing explanation
Fig. 1 be shown as of the present invention be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler one schematic diagram.
Fig. 2 be shown as of the present invention be applicable to sulfurous fuels heating furnace from another schematic diagram of deoxygenation waste heat boiler.
Fig. 3 is shown as the structural representation of waste-heat recovery device of the present invention.
Fig. 4 is shown as schematic diagram when the present invention is applied to engine exhaust flue.
Fig. 5 is shown as another schematic diagram when the present invention is applied to engine exhaust flue.
Element numbers explanation
1 drum
2 flash vessels
3 waste-heat recovery devices
31 endotherm sections
32 heat release section
33 tedges
34 down-comers
4 economizers
5 evaporimeters
6 superheaters
7 condensing turbine
8 deoxygenation water tanks
9 condensers
10 flues
11 second temperature sensors
12 control valves
13 boiler feed pipes
14 water pumps
15 generators
16 control systems
17 control valves
18 first temperature sensors
19 heating furnaces
20 chimneys
21 engines
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this description can understand other advantages of the present invention and effect easily.
Refer to Fig. 1 to Fig. 5.Notice, structure, ratio, size etc. that this description institute accompanying drawings illustrates, content all only in order to coordinate description to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the present invention can produce and the object that can reach, still all should drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, quote in this description as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
As shown in Figure 1, the invention provides a kind of be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler, comprise a waste-heat recovery device, inside establish the flash vessel 2 of steam-water separator b, the deoxygenation water tank 8 communicated with flash vessel 2, drum 1, and the evaporimeter 5 be located in flue 10, waste-heat recovery device comprises again endotherm section 31, heat release section 32, tedge 33 and down-comer 34, as shown in Figure 3, heat release section 32 is positioned at the top of endotherm section 31, endotherm section 31 is connected with down-comer 34 by tedge 33 with heat release section 32, and in heat release section 32, the mouth of pipe of tedge 33 is higher than the mouth of pipe of down-comer 34, make the heat transfer medium of the heat transfer medium of rising and decline non-interference.Endotherm section 31 is located in flue 10, and drum 1 is connected by circulating line with evaporimeter 5, and boiler feed pipe 13 is connected with the water inlet c of flash vessel 2 after heat release section 32 again, and the delivery port of deoxygenation water tank 8 is connected with drum 1.Boiler feedwater first reaches after uniform temperature is converged with the boiler feedwater in supervisor through heat release section heat absorption again and enters flash distillation deoxygenation in flash vessel 2 by the present invention, be that high-temperature water is without using other thermals source (as boiler draws gas) deoxygenation by the water making to enter flash vessel 2 that adds of waste-heat recovery device, boiler feedwater enters deaerated water case 8 after flash vessel 2 deoxygenation, then enters drum 1 and form steam.As can be seen here, the heat energy that in the present invention, deoxygenation utilizes is the fume afterheat in boiler flue, can effectively reduce waste heat boiler exhaust gas temperature, fume afterheat is fully used, and utilize flash vessel 2 flash distillation deoxygenation not need to draw gas, save the quantity of steam of boiler self, improve boiler self effect; Make the Temperature of Working in economizer raise simultaneously, make the metallic walls surface temperature of boiler economizer higher than flue gas dew point temperature, the corrosion of acid dew can not occur.
The concrete structure of above-mentioned flash vessel is: the top of flash vessel 2 is provided with steam drain d, and water inlet c is located at the middle part of flash vessel 2, and the bottom of flash vessel 2 is provided with skirt, and the base of this skirt is connected with the upper side of deoxygenation water tank by an adpting flange.For safe handling, the top of above-mentioned flash vessel 2 is also provided with safety relief valve a.Owing to adopting the deaerating plant of band flash vessel to be used as thermal source without the need to using boiler to draw gas, which saving the thermal effect of boiler self, improving boiler utilization rate.Meanwhile, the present invention, by adding waste-heat recovery device on boiler feedwater pipeline, makes the water entering flash vessel be high-temperature water, guarantees boiler feedwater deoxygenation in flash vessel.
The boiler feed temperature of waste heat boiler is generally 20 DEG C, if flue gas is direct and heating equipment heat exchange, heating equipment wall surface temperature is near or below flue gas acid dew point temperature, may cause the acid dew corrosion of heating equipment; And the exhaust gas temperature of exhaust-heat boiler flue gas is very high, directly discharge causes very large waste, and the present invention carrys out heating boiler feed water by installing waste-heat recovery device as heating equipment recovery using waste heat from tail gas.Waste-heat recovery device comprises the endotherm section 31 and heat release section 32 that are connected with down-comer 34 by tedge 33, endotherm section 31 is located in flue 10, heat release section 32 is placed on the branch road of boiler feed pipe, flue gas when through endotherm section 31 by thermal release to the heat transfer medium in endotherm section 31, the lift produced because of density contrast after heat transfer medium absorbs heat enters heat release section 32 by tedge 33, endotherm section 31 is got back to by down-comer 34 after release heat in heat release section 32, complete a circulation thus, without the need to external impetus in whole cyclic process.Endotherm section is placed in flue and absorbs heat and pass to heat transfer medium, heat transfer medium passes to the boiler feedwater of 20 DEG C again in heat release section, by boiler feedwater heat temperature raising, the water temperature of flash vessel water inlet is made to reach deoxygenation temperature more than 104 DEG C, the heat transfer medium of waste-heat recovery device is often high temperature forced circulation water or Natural Circulation steam, therefore its heat transfer coefficient is surveyed far above flue gas, wall surface temperature is determined by heat transfer medium side temperature, therefore can control waste-heat recovery device from the corrosion of acid dew by the temperature of Heat Transfer Control medium.
Above-mentioned boiler feed pipe 13 is divided into two-way: main road and the branch road of drawing from main road, and main road is directly connected with the water inlet c of flash vessel 2, and branch road is connected with the water inlet c of flash vessel 2 after heat release section 32 again.Can, so that regulate the caloric receptivity of above-mentioned endotherm section, be easy to realize automatic control like this.
As shown in Figure 2, an economizer 4 also can be established in the flue of above-mentioned endotherm section front, the delivery port of above-mentioned deoxygenation water tank 8 is connected with the water inlet of economizer 4, the delivery port of economizer 4 is connected with drum 1, boiler feedwater can be made like this after flash vessel 2 deoxygenation to enter deaerated water case 8, then form steam by entering drum 1 after economizer 4, make the further preheating of boiler feedwater, improve the water temperature entering drum, reach better residual heat from boiler fume utilization rate.
Normally work for making each equipment in flue of the present invention better, from the corrosion of acid dew, the present invention also comprises control system 16, control system 16 and the first temperature sensor 18 be located on endotherm section, be located at flash vessel water inlet c place the second temperature sensor 11 and be located at above-mentioned main road respectively and be connected with the control valve 12,17 on branch road.Control valve 12 is three-way control valve, and boiler feed pipe is divided into two-way and above-mentioned supervisor and arm by it, and the flow of arm can also be regulated by control valve 17, to control absorbed fume afterheat amount.Therefore, this control system effectively can control the temperature of oxygen-eliminating device 8 more than deoxygenation temperature (about 104 DEG C), improves oxygen removal efficiency, and the wall surface temperature simultaneously controlling above-mentioned endotherm section 31, higher than acid dew-point temperature, fundamentally avoids the corrosion of acid dew and clogging phenomenon.
In the present invention, boiler feedwater flows to and is: boiler feedwater is divided into two-way and main road and branch road by the control valve 12 on boiler feed pipe 13, boiler feedwater in branch road to converge with the boiler feedwater in main road and enters flash vessel 2 from the water inlet c of flash vessel 2 after heat release section 32 is absorbed heat, the boiler feedwater now entering flash vessel is high-temperature water, guarantee that it deoxygenation can enter deoxygenation water tank 8 in flash vessel, economizer 4 can be entered after deoxygenation absorb heat further, enter drum 1 again, carrying out between drum 1 and evaporimeter 5 circulates and absorb heat becomes steam, the steam formed can go generating, steam (vapor) outlet by drum 1 is connected with condensing turbine 7, condensing turbine 7 is connected with generator 15.As needs superheated steam, as shown in Figure 2, the steam (vapor) outlet of drum 1 can be connected with the superheater be located in flue 10 6, superheater 6 is connected with above-mentioned condensing turbine 7 again, and then the superheated steam drive electrical generators 15 that does work in condensing turbine 7 generates electricity.Condensing turbine 7 is connected with condenser 9, the outlet pipe of condenser 9 is connected with above-mentioned branch road, becomes water to be recycled in boiler feedwater the steam condensation after acting, through heat release section 32 heats after going here and there mutually with above-mentioned branch road, for ease of the circulation of water, the outlet pipe of this condenser 9 is provided with water pump 14.
In embodiment shown in Fig. 1 and Fig. 2, flue 10 is arranged between heating furnace 19 and chimney 20.
But said sulfurous fuels heating furnace also can be the boiler of engine or other high fume temperatures in the present invention.As shown in Figure 4, Figure 5, when said sulfurous fuels heating furnace refers to engine, the exhaust outlet of the front end connecting engine 21 of flue 10, and the end of flue 10 does not establish chimney.
In sum, of the present invention be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler, the heat energy that in the present invention, deoxygenation utilizes is the fume afterheat in boiler flue, can effectively reduce waste heat boiler exhaust gas temperature, fume afterheat is fully used, and utilize flash vessel flash distillation deoxygenation not need to draw gas, save the quantity of steam of boiler self, improve boiler self effect; Make the Temperature of Working in economizer raise simultaneously, make the metallic walls surface temperature of boiler economizer higher than flue gas dew point temperature, the corrosion of acid dew can not occur.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (10)
1. one kind be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler, it is characterized in that, comprise a waste-heat recovery device, inside establish the flash vessel (2) of steam-water separator, the deoxygenation water tank (8) communicated with flash vessel (2), drum (1), and the evaporimeter (5) be located in flue (10), the endotherm section (31) of described waste-heat recovery device is connected with down-comer (34) by tedge (33) with heat release section (32), endotherm section is located in described flue (10), described drum (1) is connected by circulating line with described evaporimeter (5), boiler feed pipe is connected with the water inlet of described flash vessel (2) after described heat release section again, the delivery port of described deoxygenation water tank (8) is connected with described drum (1).
2. according to claim 1 be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler, it is characterized in that: described boiler feed pipe is divided into two-way: main road and the branch road of drawing from described main road, described main road is directly connected with the water inlet of described flash vessel (2), and described branch road is connected with the water inlet of described flash vessel (2) after described heat release section again.
3. according to claim 2 be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler, it is characterized in that: also comprise control system (16), and be located at the first temperature sensor (18) on described endotherm section, the second temperature sensor (11) being located at described flash vessel water inlet and two control valves (12,17) be located at respectively on described main road and branch road, described first temperature sensor (18), the second temperature sensor (11), control valve (12,17) are all connected with described control system (16).
4. according to claim 1 be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler, it is characterized in that: the water temperature of described flash vessel water inlet (c) is higher than 104 DEG C.
5. according to claim 1 be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler, it is characterized in that: also comprise the condensing turbine (7) be connected with generator (15), the steam (vapor) outlet of described drum (1) is connected with described condensing turbine (7).
6. according to claim 5 be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler, it is characterized in that: described condensing turbine (7) is connected with condenser (9), the outlet pipe of described condenser (9) is connected with described branch road, and the outlet pipe of described condenser (9) is provided with water pump (14).
7. according to claim 1 be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler, it is characterized in that: the top of described flash vessel (2) is provided with steam drain (d), described water inlet (c) is located at the middle part of described flash vessel (2), and the bottom of described flash vessel (2) is connected with described deoxygenation water tank (8).
8. according to claim 7 be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler, it is characterized in that: the top of described flash vessel (2) is also provided with safety relief valve (a).
9. according to claim 1 be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler, it is characterized in that: the two ends of described flue (10) are respectively heating furnace and chimney.
10. according to claim 1 be applicable to sulfurous fuels heating furnace from deoxygenation waste heat boiler, it is characterized in that: the exhaust outlet of one end connecting engine of described flue (10), the other end does not establish chimney.
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| CN201310684868.3A CN104713058B (en) | 2013-12-12 | 2013-12-12 | Self-deoxidization waste heat boiler suitable for sulfur-containing fuel |
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| CN201310684868.3A CN104713058B (en) | 2013-12-12 | 2013-12-12 | Self-deoxidization waste heat boiler suitable for sulfur-containing fuel |
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| CN107990299A (en) * | 2017-10-25 | 2018-05-04 | 山西潞安煤基精细化学品有限公司 | A kind of water supply line for converting feedwater preheater |
| CN110056859A (en) * | 2019-04-02 | 2019-07-26 | 南通常安能源有限公司 | A kind of flue gas waste heat recovery heat-exchange system and method |
| CN113405079A (en) * | 2021-06-29 | 2021-09-17 | 浙江诚邦新能源科技有限公司 | Heat storage type waste heat recovery device |
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| CN106546113A (en) * | 2016-11-29 | 2017-03-29 | 无锡市锡源锅炉有限公司 | A kind of heat carrier gas stove device for recycling exhaust smoke residual heat |
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| CN110056859A (en) * | 2019-04-02 | 2019-07-26 | 南通常安能源有限公司 | A kind of flue gas waste heat recovery heat-exchange system and method |
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