CN111649316B - Hydrophobic exhaust steam waste heat recovery process - Google Patents
Hydrophobic exhaust steam waste heat recovery process Download PDFInfo
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- CN111649316B CN111649316B CN202010538937.XA CN202010538937A CN111649316B CN 111649316 B CN111649316 B CN 111649316B CN 202010538937 A CN202010538937 A CN 202010538937A CN 111649316 B CN111649316 B CN 111649316B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/50—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers for draining or expelling water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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Abstract
The invention relates to a hydrophobic exhaust steam waste heat recovery process, which comprises the following steps: the method comprises the steps that firstly, a steam-water mixer and a degassing water storage tank for gas-liquid separation are included, the dewatering exhaust steam of an air preheater and the dewatering exhaust steam of electric dust removal are respectively communicated with the gas input end of the steam-water mixer through pipelines, the liquid output end of the steam-water mixer is communicated with the input end of the degassing water storage tank, and the demineralized water output end of a deaerator is communicated with the liquid input end of the steam-water mixer; a hot water output end of the degassing water storage tank is communicated with a demineralized water input end of a deaerator through a pipeline; and a hot water pump is arranged on a pipeline between the liquid output end of the degassing water storage tank and the deaerator. The invention can effectively and further recycle the heat energy generated by the domestic waste incineration boiler so as to save energy and reduce production cost.
Description
Technical Field
The invention relates to the technical field of heat energy recycling, in particular to a hydrophobic exhaust steam waste heat recycling process.
Background
The waste incineration power generation is a work of introducing waste incineration plants and waste incineration equipment, digesting and absorbing and re-creating, mainly utilizes heat energy generated by waste incineration to generate power, and mainly uses a household waste incineration boiler and a deaerator for supplying water to the household waste incineration boiler. However, in the prior art, when the domestic waste incineration boiler is used, certain high-heat gas is discharged due to combustion of the domestic waste incineration boiler, and more impurities exist in the high-heat gas, so that certain energy waste is caused, and meanwhile, certain pollution is caused to the surrounding environment.
In order to solve the technical problems, an air prediction device and an electric dust removal device are often installed in a flue of a domestic waste incineration boiler in the prior art so as to recycle heat of flue gas discharged from the flue of the domestic waste incineration boiler and absorb and purify the discharged flue gas, thereby improving the heat utilization rate and reducing the influence on the surrounding environment.
The above prior art solutions have the following drawbacks: empty prediction and electrostatic precipitator can produce relatively more hydrophobic and pan steam when using, and these pan steam can directly discharge to the air when using, and hydrophobic can directly be discharged to the cooling tower and use after doing the deposit for the utilization ratio of the heat energy that produces to domestic waste incineration boiler burning is still relatively lower when using, is unfavorable for the energy saving and reduces use cost.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a hydrophobic exhaust steam waste heat recovery process which can effectively and further recycle heat energy generated by a household garbage incineration boiler so as to save energy and reduce production cost.
The above object of the present invention is achieved by the following technical solutions:
a hydrophobic exhaust steam waste heat recovery process comprises the following steps: the method comprises the steps that firstly, a steam-water mixer and a degassing water storage tank for gas-liquid separation are included, the dewatering exhaust steam of an air preheater and the dewatering exhaust steam of electric dust removal are respectively communicated with the gas input end of the steam-water mixer through pipelines, the liquid output end of the steam-water mixer is communicated with the input end of the degassing water storage tank, and the demineralized water output end of a deaerator is communicated with the liquid input end of the steam-water mixer; a hot water output end of the degassing water storage tank is communicated with a demineralized water input end of a deaerator through a pipeline; and a hot water pump is arranged on a pipeline between the liquid output end of the degassing water storage tank and the deaerator.
By adopting the technical scheme, the first step can enable the dewatering exhaust steam of the air preheater and the dewatering exhaust steam of the electric dust remover to be mixed with the desalted water of the deaerator through a steam-water mixer, heat the desalted water required by the deaerator, utilize the residual heat of the dewatering exhaust steam of the air preheater and the dewatering exhaust steam of the electric dust remover, and then separate water from steam through a degassing water storage tank; step two is used for making when using mixed hydrophobic demineralized water after being heated by the hydrophobic exhaust steam of air preheater and the hydrophobic exhaust steam of electrostatic precipitator can transmit into the demineralized water input of oxygen-eliminating device again, with the energy that the reduction needs to consume the demineralized water heating, waste heat in the hydrophobic exhaust steam of utilization air preheater and the hydrophobic exhaust steam of electrostatic precipitator that can be comparatively abundant, the hot-water pump can make the demineralized water after the heating transmit into to the oxygen-eliminating device again simultaneously, can improve the reuse rate of water simultaneously, optimize the result of use.
The present invention in a preferred example may be further configured to: the step one and the step two also comprise electric switch valves arranged at the liquid output end of the deaerator, the electric switch valves and the hot water pump run in a linkage mode, and valves are arranged at the liquid output end of the degassing water storage tank and the demineralized water input end and the demineralized water output end of the deaerator.
Through adopting above-mentioned technical scheme, can make electric switch valve and hot-water pump open and close simultaneously to make when using, if the demineralized water output goes wrong or the demineralized water of hot-water pump after the pump sending heating appears when unusual, the accessible closes the liquid output of hot-water pump and electric switch valve control degasification water storage tank simultaneously, makes the gas-liquid flow in degasification water storage tank and the vapour water mixer suspend, makes to use the probability that reduces the secondary anomaly that appears that the while that leads to because of the abnormal conditions comparatively simple.
The present invention in a preferred example may be further configured to: the liquid input end of the steam-water mixer is provided with a filter, and the demineralized water output end of the deaerator is communicated with the liquid input end of the filter through a pipeline.
Through adopting above-mentioned technical scheme, because the demineralized water contains the drainage of air preheater and electrostatic precipitator, can have certain impurity, filter some impurity among them through the filter to reduce the influence of impurity to the oxygen-eliminating device use, the cycle of extension use, thereby can further increase the rate of reuse to water, with the optimization result of use.
The present invention in a preferred example may be further configured to: and a high liquid level alarm and a low liquid level alarm are arranged between the input end and the output end of the degassing water storage tank, and the high liquid level alarm and the low liquid level alarm are respectively arranged on the upper part and the lower part of the degassing water storage tank.
Through adopting above-mentioned technical scheme for do the monitoring to the liquid level of jar internal, reduce the probability that the too much or too little condition of the internal liquid of jar appears.
The present invention in a preferred example may be further configured to: the gas input end of the steam-water mixer is communicated and fixedly connected with a supercharger, and the input of the supercharger is communicated with the output end of the air preheater drainage exhaust steam or the electric dust removal drainage exhaust steam.
By adopting the technical scheme, the dewatering and the exhaust steam output by the output end of the dewatering exhaust steam of the air preheater or the dewatering exhaust steam of the electric dust collector are subjected to pressurization treatment, so that the heating effect of desalted water discharged by the deaerator is optimized while the backflow condition in the steam-water mixer is reduced.
The present invention in a preferred example may be further configured to: the steam-water mixer comprises a three-way pipe and an input pipe for guiding a steam-liquid mixture, wherein the three-way pipe is provided with a liquid input end, a gas input end and an output end, the inner wall of the gas input end is frustum-shaped and is a large-end opening, the input pipe is inserted into the inner wall of the gas input end and is matched with the inner wall of the gas input end, the input pipe comprises a connecting part and an output part integrally formed with the connecting part, the connecting part and the gas input end are both connected with a pipeline of the hydrophobic exhaust steam of the air preheater or the hydrophobic exhaust steam of the electric dust remover through bolt flanges, the opening edge of the output part is inwards sunken to form a semicircular annular structure, and the semicircular opening of the output part faces towards the liquid input end.
By adopting the technical scheme, when in use, as the steam-water mixer mixes the hydrophobic and steam mixture discharged by the hydrophobic exhaust steam of the air preheater or the hydrophobic exhaust steam of the electric dust collector with the demineralized water, in order to ensure that the mixing effect is relatively better, the utilization efficiency of preheating in the hydrophobic exhaust steam of the air preheater or the hydrophobic exhaust steam of the electric dust collector is optimized, the opening edge pipe wall of the output part facing to one end of the output end is inwards sunken to form a semicircular structure, the semicircular opening of the output part faces to the liquid input end, the inner wall of the output part and the liquid input end far away from one side of the output end is in smooth transition, when in use, the mixture of the hydrophobic and steam sequentially passes through the connecting part and the output part, the flow speed and the pressure of the mixture of the hydrophobic and steam can be increased when the output part outputs, so as to increase the impact effect on the demineralized water, and ensure that the hydrophobic and the steam are relatively fully mixed, and meanwhile, the probability of sufficient contact between the desalted water and the hydrophobic water and the steam during impact is increased, so that the heating uniformity and the heating effect of the desalted water are further optimized.
The present invention in a preferred example may be further configured to: the outer wall of one side, facing the liquid input end, of the output part is fixedly connected with a plurality of guide plate groups, each guide plate group comprises two guide plates, the two guide plates in the same group extend to the opening edge of the output part in opposite directions, the inner wall of the opening edge of the output part is provided with a plurality of triangular guide blocks I and rhombic guide blocks II, the guide blocks I and the guide blocks II are distributed in a staggered mode, the upper ends and the lower ends of the guide blocks I and the guide blocks II are fixedly connected to the inner walls of the upper side and the lower side of the output part respectively, a plurality of groups of output channels are formed between the adjacent guide blocks I and the guide blocks II, and the output channels in the same group comprise two output channels with openings in opposite directions.
By adopting the technical scheme, when the device is used, the flow trend of the original relatively regular demineralized water can be changed under the guiding action of the guide plates, so that the flow trends and the rules of the demineralized water at different positions in the semicircular structure of the output part are different, the demineralized water can be more fully contacted when the mixture of hydrophobic water and steam is contacted, and the preheating utilization effect of the hydrophobic exhaust steam of the air preheater and the hydrophobic exhaust steam of the electric dust collector is optimized; when the mixture of hydrophobic and steam is discharged from the output channel simultaneously, because the guide effect of output channel makes the mixture of hydrophobic and steam can form the collection beam current and impact each other in the output portion outside, thereby can make the mixture of hydrophobic and steam can be more abundant mix with the demineralized water, to the utilization efficiency that the hydrophobic exhaust steam of air preheater and the hydrophobic exhaust steam of electrostatic precipitator preheat during further optimization use, guide piece one and guide piece two can make the mixture of hydrophobic and steam enter into the output channel simultaneously, can do guide and pressure boost to the mixture of hydrophobic and steam, reduce the hindrance that receives when flowing into the output channel to hydrophobic and steam, with the optimization result of use.
The present invention in a preferred example may be further configured to: the inner wall of the output end is fixedly connected with a plurality of hydrophobic plates.
Through adopting above-mentioned technical scheme, in order to make the mixture of hydrophobic and steam fully mix with the demineralized water, the flow of the mixture after the three mixes is comparatively disorderly relatively, can produce certain noise, can effectually do dredging hydrophobic, steam and demineralized water through the hydrophobic plate to the noise that produces when reducing the mixture transmission of hydrophobic, steam and demineralized water, with optimize the result of use.
The present invention in a preferred example may be further configured to: the plurality of hydrophobic plates are spirally arranged, and the spiral lines of the spirals of the hydrophobic plates do not interfere with each other.
Through adopting above-mentioned technical scheme, when combing to the mixture of hydrophobic, steam and demineralized water, can effectually reduce the striking that produces between hydrophobic board and the mixture of hydrophobic, steam and demineralized water, the noise that produces when reducing the combing optimizes the result of use.
In summary, the invention includes at least one of the following beneficial technical effects:
1. step one, enabling the air preheater hydrophobic exhaust steam and the electric dust removal hydrophobic exhaust steam to be mixed with desalted water of a deaerator through a steam-water mixer to be used as steam-water, heating the deaerator to use the required desalted water, utilizing the residual heat of the air preheater hydrophobic exhaust steam and the electric dust removal hydrophobic exhaust steam, and then performing steam-water separation through a degassing water storage tank; step two, desalting water and a hydrophobic mixture heated by the hydrophobic exhaust steam of the air preheater and the hydrophobic exhaust steam of the electric dust remover can be transferred to the desalting water input end of the deaerator again when the electric dust remover is used, so that the energy consumed for heating the desalting water is reduced, the waste heat in the hydrophobic exhaust steam of the air preheater and the hydrophobic exhaust steam of the electric dust remover can be relatively fully utilized, and meanwhile, the heated desalting water can be transferred to the deaerator again by the hot water pump;
2. when in use, as the steam-water mixer mixes the hydrophobic and steam mixture discharged by the hydrophobic exhaust steam of the air preheater or the hydrophobic exhaust steam of the electric dust collector with the demineralized water, in order to ensure that the mixing effect is relatively better, the utilization efficiency of preheating in the hydrophobic exhaust steam of the air preheater or the hydrophobic exhaust steam of the electric dust collector is optimized, the opening edge of the output part facing one end of the output end is inwards sunken along the pipe wall to form a semicircular structure, the semicircular opening of the output part faces the liquid input end, the inner wall of the output part and the inner wall of the liquid input end far away from the output end are in smooth transition, when in use, the hydrophobic and steam mixture sequentially passes through the connecting part and the output part, the flow rate and the pressure of the hydrophobic and steam mixture can be increased when the output part outputs the mixture, so as to increase the impact effect on the demineralized water, the relative and sufficient mixing of the demineralized water and the hydrophobic and the steam, and the probability of sufficient contact between the demineralized water and the hydrophobic and the steam during impact is increased, thereby further optimizing the uniformity and heating effect of the heating of the demineralized water.
Drawings
Fig. 1 is a block diagram of the present embodiment, which is mainly used to show the overall structure.
Fig. 2 is a schematic structural diagram of the steam-water mixer, the degassing water storage tank and the hot water pump in the embodiment, which is mainly used for showing the installation position relationship of the steam-water mixer, the degassing water storage tank and the hot water pump.
Fig. 3 is a partial characteristic sectional structure diagram of a partial structure of the embodiment, which is mainly used for showing the structures of a steam-water mixer and a degassing water storage tank.
Fig. 4 is an enlarged schematic view of a portion a in fig. 3, and is mainly used for showing the structures of the first guiding block and the second guiding block.
In the figure, 1, a steam-water mixer; 11. a filter; 111. a water pressure detector; 12. a three-way pipe; 121. a liquid input; 122. a gas input; 123. an output end; 124. a hydrophobic plate; 13. an input tube; 131. a connecting portion; 132. an output section; 133. a guide plate; 134. a first guide block; 135. a second guide block; 2. a degassing water storage tank; 21. a high liquid level alarm; 22. a low liquid level alarm; 23. a tank body; 231. an output pipe; 232. an exhaust pipe; 24. a separating member; 241. a drive motor; 242. a separation tube; 243. separating the first blade; 244. separating the second blade; 245. a first transmission bevel gear; 246. a drive shaft; 247. a second transmission bevel gear; 3. a hot water pump; 4. an electrically operated on-off valve; 5. a supercharger.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, the hydrophobic exhaust steam waste heat recovery process disclosed by the invention comprises
The method comprises the steps that firstly, a steam-water mixer 1 and a degassing water storage tank 2 used for gas-liquid separation are included, the hydrophobic exhaust steam of an air preheater and the hydrophobic exhaust steam of electric dust removal are respectively communicated through pipelines and input into the gas input end of the steam-water mixer 1, the liquid input end of the steam-water mixer 1 is communicated with the demineralized water output end of a deaerator, and the liquid output end of the steam-water mixer 1 is communicated with the input end of the degassing water storage tank 2, so that the hydrophobic exhaust steam of the air preheater and the hydrophobic exhaust steam of the electric dust removal are subjected to steam-water mixing with demineralized water of the deaerator through the steam-water mixer 1, the deaerator is subjected to heating treatment by using required demineralized water, and the residual heat of the hydrophobic exhaust steam of the air preheater and the hydrophobic exhaust steam of the electric dust removal are utilized;
a hot water output end of the degassing water storage tank 2 is communicated with a demineralized water input end of the deaerator through a pipeline so that demineralized water and a hydrophobic mixture heated by the hydrophobic exhaust steam of the air preheater and the hydrophobic exhaust steam of the electric dust collector can be transmitted to the demineralized water input end of the deaerator again when the deaerator is used, energy consumed for heating the demineralized water is reduced, and residual heat in the hydrophobic exhaust steam of the air preheater and the hydrophobic exhaust steam of the electric dust collector can be utilized relatively fully; wherein the temperature of the desalted water after heating is 80 ℃.
The pipeline between the liquid output of degasification water storage tank 2 and the oxygen-eliminating device is provided with hot-water pump 3, the pipeline of the demineralized water output intercommunication of oxygen-eliminating device is provided with electric switch valve 4, electric switch valve 4's input/output end communicates respectively in the demineralized water output of oxygen-eliminating device and the liquid input of vapour water blender 1, electric switch valve 4 and 3 chain operation of hot-water pump, can make electric switch valve 4 and the power cord of hot-water pump 3 communicate in the same power output end of opening and close the switch, so that electric switch valve 4 and hot-water pump 3 can open and close simultaneously. So that when using, if the demineralized water output goes wrong or the demineralized water of hot-water pump after the pump sending heating appears unusually, the accessible closes hot-water pump 3 and the liquid output of electric switch valve 4 control degasification water storage tank 2 simultaneously for the gas-liquid flow in degasification water storage tank 2 and the vapor-water mixer 1 stops, reduces the probability that the secondary anomaly that appears because of the abnormal conditions leads to when making use comparatively simple.
Referring to fig. 2 and 3, the liquid input end of the steam-water mixer 1 is connected with a filter 11, and the liquid input end of the filter 11 is connected with the output end of the electric switch valve 4 through a pipeline, so that the input end of the filter 11 is connected with the demineralized water output end of the deaerator through the pipeline and the electric switch valve 4. Wherein, the input and output ends of the filter 11 are respectively provided with a water pressure detector 111 for detecting the water pressure at the input and output ends of the filter 11, thereby reducing the probability of the filter 11 being blocked due to excessive filtered impurities in the filter 11.
Meanwhile, the gas input end of the steam-water mixer 1 is communicated and fixedly connected with a supercharger 5, the input end of the supercharger 5 is communicated with the output end of the air preheater hydrophobic exhaust steam or the electric dust removal hydrophobic exhaust steam, so that the output end of the air preheater hydrophobic exhaust steam or the electric dust removal hydrophobic exhaust steam is subjected to pressurization treatment when in use, the backflow situation in the steam-water mixer 1 is reduced, and the heating effect of desalted water discharged by a deaerator is optimized.
Referring to fig. 1 and 2, the steam-water mixer 1 includes a three-way pipe 12 and an input pipe 13 for guiding the air preheater hydrophobic exhaust steam or the electric dust removal hydrophobic exhaust steam into the three-way pipe 12, three open ends of the three-way pipe 12 are respectively a liquid input end 121, a gas input end 122 and an output end 123, an inner wall of the gas input end 122 is in a frustum-shaped structure, and the gas input end 122 is in a large-end opening.
The output portion 132 has a semicircular opening edge, and outer walls on both sides in the axial direction of the opening edge abut against the inner wall of the three-way pipe 12. The connecting portion 131 is located the outside opening border of liquid input 121 and the opening border of gas input 122 and all turns over and turn over and be formed with the flange, and two flanges are worn to be equipped with the bolt and are made two equal flange connections of flange in the hydrophobic exhaust steam of air preheater or the hydrophobic exhaust steam's of electrostatic precipitator pipeline. So that when using, the outer wall through connecting portion 131 frustum shape fits in the inner wall of liquid input 121 frustum shape for area of contact between the two is bigger relatively, optimizes the leakproofness between the two, and makes when connecting, connects between the two and inseparabler relatively, reduces the probability that the condition that water oozes or steam oozes.
When in use, as the steam-water mixer 1 mixes the hydrophobic and steam mixture discharged by the hydrophobic exhaust steam of the air preheater or the hydrophobic exhaust steam of the electric dust collector with the demineralized water, in order to ensure that the mixing effect is relatively better, the utilization efficiency of preheating in the hydrophobic exhaust steam of the air preheater or the hydrophobic exhaust steam of the electric dust collector is optimized, the opening edge of the output part 132 facing one end of the output end 123 is inwards sunken along the pipe wall to form a semicircular structure, the semicircular opening of the output part 132 faces the liquid input end 121, the smooth transition is formed between the output part 132 and the inner wall of the liquid input end 121 far away from the output end 123, when in use, the hydrophobic and steam mixture sequentially passes through the connecting part 131 and the output part 132, the flow rate and the pressure of the hydrophobic and steam mixture can be increased when the output part 132 outputs the mixture, so as to increase the impact effect on the demineralized water, and ensure that the hydrophobic and steam mixture are relatively fully mixed, and meanwhile, the probability of sufficient contact between the desalted water and the hydrophobic water and the steam during impact is increased, so that the heating uniformity and the heating effect of the desalted water are further optimized.
Referring to fig. 3 and 4, a plurality of sets of guide plate sets are fixedly connected to an outer wall of the output part 132 on the side facing the liquid input end 121, each guide plate set includes two guide plates 133, the two guide plates 133 extend toward an opening edge of the output part 132, one ends of the two guide plates 133 on the edge facing the output part 132 are also opposite to each other, so that a plane on which the two guide plates 133 are located is V-shaped, the V-shaped opening faces the connecting part 131, and an edge of the guide plate 133 on the side facing the liquid input end 121 is fixedly connected to an inner wall of the three-way pipe 12. So that when using, the demineralized water can change the flow trend of original comparatively law under the guide effect of a plurality of guide plates 133 for the flow trend and the law that are located the demineralized water of different positions in output portion 132 semicircle column structure are different, thereby can make the demineralized water can more abundant contact when the mixture contact of hydrophobic and steam, in order to optimize the utilization effect to the preheating of air preheater drainage exhaust steam and electrostatic precipitator drainage exhaust steam.
The inner wall of the opening edge of the output part 132 is provided with a plurality of first guide blocks 134 in a triangular prism structure and second guide blocks 135 in a quadrangular prism structure, the cross sections of the second guide blocks 135 are in a diamond shape, the first guide blocks 134 and the second guide blocks 135 are circumferentially distributed along the opening edge of the output part 132, output channels are respectively formed between the second guide blocks 135 and the adjacent first guide blocks 134, and the two output channels are opened oppositely. When being used for when using, hydrophobic and steam's mixture is discharged from the output channel, can be in the outside mutual impact of output portion 132 to can make hydrophobic and steam's mixture can be more abundant mix with demineralized water, the efficiency of utilization that preheats hydrophobic exhaust steam of air preheater and the hydrophobic exhaust steam of electrostatic precipitator during further optimization use, guide block one 134 and guide block two 135 can make when hydrophobic and steam's mixture enters into the output channel simultaneously, can do guide and pressure boost to hydrophobic and steam's mixture, reduce the hindrance that receives when flowing into the output channel to hydrophobic and steam, with optimization result of use.
Because in order to make the mixture of the hydrophobic and the steam fully mixed with the demineralized water, the flow of the mixture of the hydrophobic and the steam is relatively disordered and certain noise is generated, the inner wall of the output end 123 is fixedly connected with a plurality of hydrophobic plates 124 for performing flow carding on the mixture of the hydrophobic, the steam and the demineralized water, so that the noise generated during the transmission of the mixture of the hydrophobic, the steam and the demineralized water is reduced, and the using effect is optimized.
The face of a plurality of hydrophobic boards 124 is the spiral setting and mutual noninterference between the spiral line of a plurality of hydrophobic boards 124 spiral to when making the mixture to hydrophobic, steam and demineralized water and comb, reduce the striking that produces between hydrophobic board 124 and the mixture of hydrophobic, steam and demineralized water, the noise that produces when reducing the comb optimizes the result of use.
Referring to fig. 3, the degassing water storage tank 2 includes a tank 23 and a separator 24 disposed in the tank for assisting water-gas separation, an output pipe 231 is fixed to and communicated with the lower end of the tank 23, the output pipe 231 is communicated with the input end of the hot water pump 3, and a valve for manual opening and closing is disposed between the output pipe 231 and the input end of the hot water pump 3. An exhaust pipe 232 for exhausting is fixed and communicated with the upper end of the tank body 23; the separating member 24 includes a driving motor 241, a separating tube 242, a plurality of first separating blades 243, and a plurality of second separating blades 244. Wherein, the separation pipe 242 is a plate structure and a lower opening structure, and the separation pipe 242 is disposed in the tank 23.
The driving motor 241 is fixedly connected to the upper end of the tank 23, an output shaft of the driving motor 241 is coaxially and fixedly connected with a first driving bevel gear 245, the tank 23 is provided with a transmission shaft 246, the lower end of the transmission shaft 246 penetrates into the tank 23, and the upper end of the transmission shaft 246 penetrates out of the tank 23 and is fixedly connected with a second driving bevel gear 247 meshed with the first driving bevel gear 245. The lower end of the transmission shaft 246 penetrates into and passes through the separation pipe 242, and a plurality of first separation blades 243 and a plurality of second separation blades 244 are respectively arranged around the part of the transmission shaft 246 penetrating into the tank body 23.
The first separating blade 243 is fixedly connected to the transmission shaft 246 and located in the separating tube 242, the second separating blade 244 is located below the separating tube 242 and the length of the second separating blade 244 is greater than that of the first separating blade 243. The first separating paddle 243 and the second separating paddle 244 are both obliquely arranged, and lower side plate surfaces of the first separating paddle 243 and the second separating paddle face towards the rotating direction of the first separating paddle and the second separating paddle. The end of the output end 123 facing the tank 23 is connected with the outer wall of the tank 23 by a flange, and the end of the output end 123 facing the tank 23 is communicated with and fixed with a pipeline which penetrates into the tank 23 and is communicated with the separation pipe 242.
When the device is used, a mixture of the hydrophobic water, the steam and the demineralized water discharged by the steam-water mixer 1 is discharged into the separation pipe 242 through the output end 123, at this time, the driving motor 241 drives the driving shaft 246 to rotate through the first driving bevel gear 245 and the second driving bevel gear 247 so as to drive the first separation blades 243 and the second separation blades 244 to rotate, because the first separation blades 243 and the second separation blades 244 are obliquely arranged and the lower side plate surfaces of the first separation blades and the second separation blades face the rotating direction of the first separation blades and the second separation blades, the mixture in the separation pipe 242 is pressurized, the mixture in the separation pipe 242 can be blocked by the separation pipe 242 so as to accelerate the separation of non-condensable gas mixed in the mixture, at this time, the mixture falls on the bottom of the tank body 23 through the separation pipe 242, the liquid generated after the separation has a tendency of moving towards the bottom of the tank body 23 under the rotation of the second separation blades 244 and can be further pressurized, so that the liquid generated after the separation circularly flows in the tank body 23, in order to further do the separation to noncondensable gas, with optimizing the result of use, the noncondensable gas after the separation passes through blast pipe 232 discharge from the clearance between the outer wall of separator 242 and the inner wall of jar body 23 this moment, and the liquid that produces after the separation lets in to the demineralized water mother pipe of oxygen-eliminating device through output tube 231 under the effect of hot-water pump 3 for the demineralized water after the heating.
Referring to fig. 3, in order to facilitate the monitoring and measurement of the liquid stored in the tank 23, the tank 23 is fixedly connected with a high liquid level alarm 21 and a low liquid level alarm 22, the high liquid level alarm 21 and the low liquid level alarm 22 are located below the output end 123 and above the output pipe 231, and the high liquid level alarm 21 and the low liquid level alarm 22 are vertically distributed at the upper part and the lower part of the tank 23 so as to monitor the liquid level in the tank 23 and reduce the probability of the occurrence of the excessive or insufficient liquid in the tank 23.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The hydrophobic exhaust steam waste heat recovery process is characterized by comprising the following steps: the method comprises the steps of firstly, including a steam-water mixer (1) and a degassing water storage tank (2) for gas-liquid separation, wherein hydrophobic exhaust steam of an air preheater and hydrophobic exhaust steam of electric dust removal are respectively communicated with a gas input end of the steam-water mixer (1) through pipelines, a liquid output end of the steam-water mixer (1) is communicated with an input end of the degassing water storage tank (2), and a demineralized water output end of a deaerator is communicated with a liquid input end of the steam-water mixer (1); the hot water output end of the degassing water storage tank (2) is communicated with the demineralized water input end of the deaerator through a pipeline; a hot water pump (3) is arranged on a pipeline between the liquid output end of the degassing water storage tank (2) and the deaerator; steam-water mixer (1) is including three-way pipe (12) and input tube (13) that are used for leading-in vapour-liquid mixture, three-way pipe (12) are provided with liquid input end (121), gas input end (122) and output (123), the inner wall of gas input end (122) is the frustum form and it is the main aspects opening, inner wall of establishing and adaptation in gas input end (122) is inserted in input tube (13), input tube (13) include connecting portion (131) and with connecting portion (131) integrated into one piece's output part (132), connecting portion (131) and gas input end (122) all through bolted flange connection in the pipeline of air preheater drainage exhaust steam or electric precipitation drainage exhaust steam, the opening border invagination of output part (132) is half circular ring structure, the half circular opening of output part (132) is towards the liquid input end.
2. The hydrophobic exhaust steam waste heat recovery process according to claim 1, characterized in that: the step one and the step two are further characterized by comprising an electric switch valve (4) arranged at the liquid output end of the deaerator, the electric switch valve (4) and the hot water pump (3) are in linkage operation, and valves are arranged at the liquid output end of the degassing water storage tank (2) and the demineralized water input end and the demineralized water output end of the deaerator.
3. The hydrophobic exhaust steam waste heat recovery process according to claim 1, characterized in that: the liquid input end of the steam-water mixer (1) is provided with a filter (11), and the demineralized water output end of the deaerator is communicated with the liquid input end of the filter (11) through a pipeline.
4. The hydrophobic exhaust steam waste heat recovery process according to claim 1, characterized in that: be provided with high liquid level alarm (21) and low liquid level alarm (22) between the input of degasification water storage tank (2) and the output, high liquid level alarm (21) and low liquid level alarm (22) set up respectively in the upper and lower portion of degasification water storage tank (2).
5. The hydrophobic exhaust steam waste heat recovery process according to claim 2, characterized in that: the gas input end of the steam-water mixer (1) is communicated and fixedly connected with a supercharger (5), and the input end of the supercharger (5) is communicated with the output end of the air preheater drainage exhaust steam or the electric dust removal drainage exhaust steam.
6. The hydrophobic exhaust steam waste heat recovery process according to claim 1, characterized in that: the liquid output device is characterized in that a plurality of groups of guide plate groups are fixedly connected to the outer wall of one side, facing the liquid input end (121), of the output portion (132), each guide plate group comprises two guide plates (133), the two guide plates (133) in the same group extend to the opening edge of the output portion (132) in opposite directions, a plurality of triangular guide blocks I (134) and rhombic guide blocks II (135) are arranged on the inner wall of the opening edge of the output portion (132), the guide blocks I (134) and the guide blocks II (135) are distributed in a staggered mode, the upper ends and the lower ends of the guide blocks I (134) and the guide blocks II (135) are fixedly connected to the inner walls of the upper side and the lower side of the output portion (132), a plurality of groups of output channels are formed between the adjacent guide blocks I (134) and the guide blocks II (135), and the output channels in the same group comprise two output channels with openings in opposite directions.
7. The hydrophobic exhaust steam waste heat recovery process according to claim 6, characterized in that: the inner wall of the output end (123) is fixedly connected with a plurality of hydrophobic plates (124).
8. The hydrophobic exhaust steam waste heat recovery process according to claim 7, characterized in that: the plurality of hydrophobic plates (124) are arranged spirally, and the spiral lines of the plurality of hydrophobic plates (124) do not interfere with each other.
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| CN101165399A (en) * | 2007-08-07 | 2008-04-23 | 江苏工业学院 | Boiler low grade residual heat combined reclamation method and device |
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