CN204285491U - The first anti-thawing apparatus of cylinder after a kind of single-drum chimney desulfurization - Google Patents
The first anti-thawing apparatus of cylinder after a kind of single-drum chimney desulfurization Download PDFInfo
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- CN204285491U CN204285491U CN201420634999.0U CN201420634999U CN204285491U CN 204285491 U CN204285491 U CN 204285491U CN 201420634999 U CN201420634999 U CN 201420634999U CN 204285491 U CN204285491 U CN 204285491U
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Abstract
The utility model provides the first anti-thawing apparatus of cylinder after a kind of single-drum chimney desulfurization, increase the steel cylinder mutually isometrical with chimney internal diameter in former concrete chimney cylinder header bits and recovering tray is set at steel cylinder and former concrete chimney junction, flue gas is allowed to discharge through steel cylinder, the condensate liquid become rapidly after the recyclable moist flue gas of recovering tray under steel cylinder meets cold air, by the recovery holes that pallet is reserved, return again and plow in chimney, comprise the former corrosion-resistant lining material forming station stage structure in dismantling concrete chimney barrel head within the scope of steel cylinder; In the cylinder head removing former corrosion-resistant lining material, reinforcing bar is adopted to carry out bar planting; Corrosion Protection of Fiber Reinforced Plastics layer is set after bar planting; Steel hoop installed by the reinforcing bar of each bar planting, and the two ends of steel hoop arrange pad; Outside Corrosion Protection of Fiber Reinforced Plastics layer, adiabator layer is set; Adiabator layer is outer to be fixed on steel cylinder on former concrete chimney by the first reinforcing bar be implanted into of bolt and cylinder is fastening, and on the bolt exposed weld bolt steel buckle closure; The step that concrete chimney upper outlet wall and the steel cylinder be exposed on the external are formed arranges a circle condensate liquid recovering tray, recovering tray is connected with the condensate liquid recovery approach of former concrete chimney.
Description
Technical field
The utility model belongs to old chimney transformation field, particularly relates to the first anti-thawing apparatus of cylinder after the existing old single-drum chimney desulfurization of a kind of cold district.
Background technology
Along with being on the increase of China's big-and-middle-sized thermal power plant quantity, the acid rain effect that the dust pollution brought by power plant boiler fire coal and sulfur dioxide (SO2) emissions bring, environmental pollution increases the weight of day by day.Therefore, carrying out overall control to sulfur dioxide (SO2) emissions is the major control index that national energy-saving reduces discharging, and all newly-built thermal power plants all must carry out desulfurization design.And require that the rectification of desulphurization plant time limit also will be gone up by old power plant.
The desulfurization method that each thermal power plant of current China generally adopts is Limestone-gypsum Wet Flue Gas Desulfurization Process, its technological principle is mixed with the water containing chemical mediator by the flue gas under the condition of high temperature, the oxious components such as SO2, SO3 and HF in flue gas and medium are reacted, forms dilute sulfuric acid, watery hydrochloric acid and other compound.Its desulfuration efficiency can reach more than 95%, and the byproduct of generation is based on gypsum.
If do not established flue gas heating system (GGH), (this system does not go up to flue gas after wet desulphurization process in most of power plant domestic at present, main cause is that the cost of equipment is high, annual operating cost is high, maintenance cost is also very high, and often go wrong), flue gas is in low temperature and high relative humidity state, and the moisture content in wet flue gas is close to saturation state, and chimney inlet temperature is about about 50 degree.Related data shows, and wet desulfurizing process is to the SO in flue gas
2removal efficiency is very high, but to causing the SO of flue gas corrosion main component
3removal efficiency is only about 20%.Containing SO
3, the material such as hydrogen fluoride and chloride saturated steam when running into the low barrel of temperature by rapid condensation, form the low temperature and high relative humidity diluted acid type corrosive environment that a kind of corrosivity is very high, permeability is very strong, to the corrosivity of inner wall of stack and strong.
For this situation, old chimney of electric plant, because design uses of the remote past, be substantially all single-drum chimney, liner major part is clay brick or acidproof brick.Masonry quality is poor, and the mortar joint of a lot of liner comes off all.Although there is a lot of problem in old-fashioned chimney, can not due to sulfur removal technology will be gone up, and reconstruction that chimney is dismantled.So, before upper wet desulphurization, tackle old factory chimney carry out reforming processing, make it the requirement meeting desulfurization fume exhaust technique.
The problem of old factory desulfurizing fly ash chimney is a lot, the first ice formation issues of cylinder after the chimney desulfurization of cold district old factory.Because desulfurization fume exists, high humidity, cigarette temperature are low, corrosivity strong, flue gas is reduced from pull out force, flue gas from throat out after, run into cold gas, very easily cover at chimney outlet, form condensate liquid.Because the barrel of single-drum chimney is concrete section, section is thicker, is easy to liquid and retains.Due to cold low temperature, very fast liquid freezes, and flue gas constantly increases, and ice stream continues to increase, and cause chimney stem to form ice stream, ice stream thickness reaches 2-3 rice.Chimney of electric plant is general high at about 180 ~ 270 meters, and it is danger close that cylinder head freezes.
Current processing method
Due to the appearance of the first ice formation issues of chimney barrel, the method for solution adopts electrical heating method.Using in engineering at present more has two kinds of heaters: electric heating tube and electric heating film.These two kinds of ubiquitous problems of device are: need external cable to pass to chimney barrel head, and annual power consumption is very large, and safeguards very inconvenient, needs high altitude climbing, danger close.Chimney barrel head place corrosivity is extremely strong in addition, the direct service life affecting heater, and the environment of cylinder head is also very poor, and wind is large, rain is large, temperature is high for low summer in winter, often there is circut breaking in cable connector, once there is outage problem, cylinder head freezes very soon, winter cannot deicing and maintenance, can only wait until ice post processing in the coming year.This device initial cost is about 1,700,000, and annual power consumption expense and maintenance cost are also more than hundreds of thousands unit.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of waste heat of flue gas self that utilizes to solve the first ice formation issues of chimney barrel, without the need to external energy.Compared with adding heating device with the cylinder head generally used at present, initial cost cost reduces, without cost of use, without the first anti-thawing apparatus of cylinder after the single-drum chimney desulfurization of maintenance cost.
The utility model is achieved in that
The utility model additionally provides the first anti-thawing apparatus of cylinder after a kind of single-drum chimney desulfurization, increase the steel cylinder mutually isometrical with chimney internal diameter in former concrete chimney cylinder header bits and recovering tray is set at steel cylinder and former concrete chimney junction, flue gas is allowed to discharge through steel cylinder, the condensate liquid become rapidly after the recyclable moist flue gas of recovering tray under steel cylinder meets cold air, by the recovery holes that pallet is reserved, return again and plow in chimney, comprise the former corrosion-resistant lining material forming station stage structure in dismantling concrete chimney barrel head within the scope of steel cylinder; In the cylinder head removing former corrosion-resistant lining material, reinforcing bar is adopted to carry out bar planting; Corrosion Protection of Fiber Reinforced Plastics layer is set after bar planting; Steel hoop installed by the reinforcing bar of each bar planting, and the two ends of steel hoop arrange pad; Outside Corrosion Protection of Fiber Reinforced Plastics layer, adiabator layer is set; Adiabator layer is outer to be fixed on steel cylinder on former concrete chimney by the first reinforcing bar be implanted into of bolt and cylinder is fastening, and on the bolt exposed weld bolt steel buckle closure; The step that concrete chimney upper outlet wall and the steel cylinder be exposed on the external are formed arranges a circle condensate liquid recovering tray, recovering tray is connected with the condensate liquid recovery approach of former concrete chimney.
In the device technique scheme of above-mentioned realization further, strengthen the vertical rigidity of steel cylinder at the steel cylinder outside weldings steel cylinder reinforcement exposed, steel cylinder top arranges Reinforced Hoop.
In the device technique scheme of above-mentioned realization further, on recovering tray with weld recovering tray reinforcement between steel cylinder.
In the device technique scheme of above-mentioned realization further,
Transition cover plate is set between the former concrete tube wall in step place and steel cylinder, between welding transition cover plate, smears acidproof layer of silica gel for calking at step place.
In the device technique scheme of above-mentioned realization further, described steel cylinder total height is 7-8 rice, and the steel cylinder height exposed is between 1.5 ~ 2 meters.
In the device technique scheme of above-mentioned realization further, recovering tray wider than concrete chimney upper outlet wall go out 100 ~ 200 millimeters.
Compared with prior art, beneficial effect is the utility model: utilize the waste heat of flue gas self to solve the first ice formation issues of chimney barrel, without the need to external energy.Compared with adding heating device with the cylinder head generally used at present, initial cost cost reduces, without cost of use, without maintenance cost.
The utility model is discharged after steel chimney by flue gas.Because the heat conductivility of steel is relatively good, selected structure ensures remain on about 40 degree when whole flue gas flows out, be unlikely to icing, steel cylinder surface is in tepid state, and the condensate liquid that the recyclable moist flue gas of recovering tray under steel cylinder becomes rapidly after meeting cold air, by the recovery holes that recovering tray is reserved, then return time to enter in chimney.Solve the first ice formation issues of concrete chimney cylinder like this, expense is not high, and key is self waste heat utilizing flue gas, solutionization ice problem.This, compared with the electric heater unit used at present, has very high economic worth and energy-conserving action.
The utility model is 7-8 rice in steel cylinder total height, the steel cylinder height exposed between 1.5 ~ 2 meters and recovering tray wider than concrete chimney upper outlet wall go out 100 ~ 200 millimeters, this scope is through repetitious test, can play and remain on not icing condition in the least significant end temperature of steel cylinder, what the height of steel cylinder can't be arranged too highly impacts in original concrete chimney structure, corresponding original mechanical performance.Be arranged on the steel cylinder part in concrete chimney, one is the effect playing connection more, and another part is that the flue-gas temperature in the deep in chimney is passed to by the steel cylinder part in chimney the part exposed.
Accompanying drawing explanation
Fig. 1 is the chimney breast structural representation that the utility model embodiment provides;
Fig. 2 is 1-1 cross section structure schematic diagram in Fig. 1;
Fig. 3 is 2-2 cross section structure schematic diagram in Fig. 1;
Fig. 4 is structure part A enlarged drawing in Fig. 2.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Fig. 1 composition graphs 2, Fig. 3, the first anti-thawing apparatus of cylinder after a kind of single-drum chimney desulfurization, increase the steel cylinder 1 mutually isometrical with chimney internal diameter in former concrete chimney cylinder header bits and recovering tray 6 is set in steel cylinder 1 and former concrete chimney junction, flue gas is allowed to discharge through steel cylinder 1, the ice action of playing of steel cylinder 1; Can form by burst welding assembly, the condensate liquid become rapidly after the recyclable moist flue gas of recovering tray 6 under steel cylinder 1 meets cold air, by the recovery holes 2 that recovering tray 6 is reserved, recovering tray 6 is for collecting condensate liquid, by recovery holes, be back to by condensate liquid in chimney and return time chimney again, in the present embodiment, steel cylinder 1 total height is 7-8 rice, the steel cylinder height exposed, must not more than 2 meters between 1.5 ~ 2 meters.Recovering tray 6 wider than concrete chimney 11 upper outlet wall go out 100 ~ 200 millimeters.This device comprises the former corrosion-resistant lining material forming station stage structure in dismantling concrete chimney barrel head within the scope of steel cylinder; In the cylinder head removing former corrosion-resistant lining material, adopt reinforcing bar 10 to carry out bar planting, bar planting is used for fixing steel cylinder 1, and diameter quantity is determined by concrete engineering; Corrosion Protection of Fiber Reinforced Plastics layer 8 is set after bar planting; As shown in Figure 4, steel hoop 13 installed by the reinforcing bar of each bar planting, the two ends of steel hoop 13 arrange pad 14, and steel hoop 13 is for limiting the thickness of heat-insulation layer; Adiabator layer 5 is set outside Corrosion Protection of Fiber Reinforced Plastics layer 8; Adiabator layer 5 is outer to be fixed on steel cylinder on former concrete chimney by the first reinforcing bar be implanted into of bolt and cylinder is fastening, and on the bolt exposed weld bolt steel buckle closure 15; Buckle closure 15 plays protection bolt and is not corroded, and buckle closure 15 and steel cylinder 1 periphery full weld, then polish with sand paper, integral spray anticorrosive paint.The step that concrete chimney upper outlet wall and the steel cylinder be exposed on the external are formed arranges a circle condensate liquid recovering tray 6, recovering tray 6 is connected with the condensate liquid recovery approach of former concrete chimney.The condensate liquid that flue gas is formed after meeting cold air is through moisture recycled in chimney through recovering tray for lower time along steel cylinder.But from observation, before most condensate liquid does not also flow to recovering tray, just air-dry, because the first wind speed of cylinder is very large, with dropping down with drying up, few part flows in chimney.
As shown in figures 2 and 3, in one embodiment, strengthen the vertical rigidity of steel cylinder at the steel cylinder 1 outside weldings steel cylinder reinforcement 4 exposed, steel cylinder 1 top arranges Reinforced Hoop 3, for strengthening the integral rigidity of steel cylinder.
In one embodiment, recovering tray 6 welds recovering tray reinforcement 7 with between steel cylinder 1, make recovering tray have certain rigidity, be unlikely to distortion, quantity is determined according to concrete engineering.
In one embodiment, between the former concrete tube wall 12 in step place and steel cylinder, transition cover plate 16 is set, acidproof layer of silica gel is smeared for calking at step place between welding transition cover plate 16, the acidproof layer of silica gel 9 of full coat in cover plate, not only this silica gel ageing-resistant but also have certain elasticity, gap all can be closed.
Technical process of the present utility model is: increase the steel cylinder 1 mutually isometrical with chimney internal diameter in former concrete chimney cylinder 1 header bits and arrange recovering tray 6 in steel cylinder 1 and former concrete chimney junction, flue gas is allowed to discharge through steel cylinder 1, the condensate liquid become rapidly after the recyclable moist flue gas of recovering tray 6 under steel cylinder 1 meets cold air, by the recovery holes 2 that recovering tray is reserved, return again and plow in chimney, specifically comprise the steps:
1) the former corrosion-resistant lining material forming station stage structure in dismantling concrete chimney barrel head in steel cylinder 1 scope;
2) in the cylinder head removing former corrosion-resistant lining material, reinforcing bar 10 is adopted to carry out bar planting;
3) Corrosion Protection of Fiber Reinforced Plastics layer 8 is done after bar planting;
4) on the reinforcing bar of each bar planting, install steel hoop 13, the two ends of described steel hoop 13 arrange pad 14;
5) Corrosion Protection of Fiber Reinforced Plastics layer 8 is outer installs adiabator layer 5;
6) stack shell implanting former concrete chimney at steel cylinder 1 offers bolt hole according to bar planting position;
7) steel cylinder 1 is put into concrete chimney and is contacted with step, and the reinforcing bar be implanted into by bolt and cylinder head is fastening to be fixed on steel cylinder on former concrete chimney, and on the bolt exposed weld bolt steel buckle closure 15;
8) step formed at concrete chimney upper outlet wall and the steel cylinder that is exposed on the external arranges a circle condensate liquid recovering tray 6, recovering tray 6 is connected with the condensate liquid recovery approach of former concrete chimney; Also recovering tray 6 can be made directly to be passed in chimney by recovery holes;
9) vertical rigidity of short steel cylinder is strengthened at the steel cylinder outside weldings steel cylinder reinforcement 4 exposed;
10) on recovering tray 6, recovering tray reinforcement 7 is welded with between steel cylinder 1;
11) Reinforced Hoop 3 is set at steel cylinder top;
12) transition cover plate 16 is set between the former concrete tube wall in step place and steel cylinder, before welding transition cover plate 16, smears acidproof layer of silica gel 9 for calking at step place;
13) the spraying inside and outside anti-corrosion paint for chimney of the steel cylinder exposed.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. the first anti-thawing apparatus of cylinder after a single-drum chimney desulfurization, it is characterized in that, increase the steel cylinder mutually isometrical with chimney internal diameter in former concrete chimney cylinder header bits and recovering tray is set at steel cylinder and former concrete chimney junction, flue gas is allowed to discharge through steel cylinder, the condensate liquid become rapidly after the recyclable moist flue gas of recovering tray under steel cylinder meets cold air, by the recovery holes that pallet is reserved, return again and plow in chimney, comprise the former corrosion-resistant lining material forming station stage structure in dismantling concrete chimney barrel head within the scope of steel cylinder; In the cylinder head removing former corrosion-resistant lining material, reinforcing bar is adopted to carry out bar planting; Corrosion Protection of Fiber Reinforced Plastics layer is set after bar planting; Steel hoop installed by the reinforcing bar of each bar planting, and the two ends of steel hoop arrange pad; Outside Corrosion Protection of Fiber Reinforced Plastics layer, adiabator layer is set; Adiabator layer is outer to be fixed on steel cylinder on former concrete chimney by the first reinforcing bar be implanted into of bolt and cylinder is fastening, and on the bolt exposed weld bolt steel buckle closure; The step that concrete chimney upper outlet wall and the steel cylinder be exposed on the external are formed arranges a circle condensate liquid recovering tray, recovering tray is connected with the condensate liquid recovery approach of former concrete chimney.
2., according to the first anti-thawing apparatus of cylinder after single-drum chimney desulfurization according to claim 1, it is characterized in that, strengthen the vertical rigidity of steel cylinder at the steel cylinder outside weldings steel cylinder reinforcement exposed, steel cylinder top arranges Reinforced Hoop.
3., according to the first anti-thawing apparatus of cylinder after single-drum chimney desulfurization according to claim 1, it is characterized in that, on recovering tray with weld recovering tray reinforcement between steel cylinder.
4., according to the first anti-thawing apparatus of cylinder after single-drum chimney desulfurization according to claim 1, it is characterized in that,
Transition cover plate is set between the former concrete tube wall in step place and steel cylinder, between welding transition cover plate, smears acidproof layer of silica gel for calking at step place.
5., according to the first anti-thawing apparatus of cylinder after single-drum chimney desulfurization according to claim 1, it is characterized in that, described steel cylinder total height is 7-8 rice, and the steel cylinder height exposed is between 1.5 ~ 2 meters.
6. the first anti-thawing apparatus of cylinder after single-drum chimney desulfurization as claimed in claim 1, is characterized in that, recovering tray wider than concrete chimney upper outlet wall go out 100 ~ 200 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420634999.0U CN204285491U (en) | 2014-10-28 | 2014-10-28 | The first anti-thawing apparatus of cylinder after a kind of single-drum chimney desulfurization |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420634999.0U CN204285491U (en) | 2014-10-28 | 2014-10-28 | The first anti-thawing apparatus of cylinder after a kind of single-drum chimney desulfurization |
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| CN204285491U true CN204285491U (en) | 2015-04-22 |
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|---|---|---|---|
| CN201420634999.0U Withdrawn - After Issue CN204285491U (en) | 2014-10-28 | 2014-10-28 | The first anti-thawing apparatus of cylinder after a kind of single-drum chimney desulfurization |
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| CN (1) | CN204285491U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373946A (en) * | 2014-10-28 | 2015-02-25 | 吉林省电力勘测设计院 | Method and device for preventing and melting ice on tube head of single-tube chimney after desulfurization |
| CN111412501A (en) * | 2019-01-08 | 2020-07-14 | 宁波方太厨具有限公司 | Smoke exhaust pipe and balance smoke pipe |
-
2014
- 2014-10-28 CN CN201420634999.0U patent/CN204285491U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373946A (en) * | 2014-10-28 | 2015-02-25 | 吉林省电力勘测设计院 | Method and device for preventing and melting ice on tube head of single-tube chimney after desulfurization |
| CN104373946B (en) * | 2014-10-28 | 2016-09-28 | 吉林省电力勘测设计院 | Cylinder head chemical defence ice method and device after a kind of single-drum chimney desulfurization |
| CN111412501A (en) * | 2019-01-08 | 2020-07-14 | 宁波方太厨具有限公司 | Smoke exhaust pipe and balance smoke pipe |
| CN111412501B (en) * | 2019-01-08 | 2021-07-16 | 宁波方太厨具有限公司 | Smoke exhaust pipe and balance smoke pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150422 Effective date of abandoning: 20160928 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |