CN204625576U - A kind of Novel water cooling wall for coal gasifier - Google Patents
A kind of Novel water cooling wall for coal gasifier Download PDFInfo
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- CN204625576U CN204625576U CN201520295279.0U CN201520295279U CN204625576U CN 204625576 U CN204625576 U CN 204625576U CN 201520295279 U CN201520295279 U CN 201520295279U CN 204625576 U CN204625576 U CN 204625576U
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Abstract
The utility model relates to a kind of Novel water cooling wall for coal gasifier, this water wall is to being spliced into fit tightly with the firing space of coal gasifier cylindric by two semi-cylindrical heat exchanger plates, described semi-cylindrical heat exchanger plates is to being connected to form through solder contacts to fiery sidelight sliding surface by a back-fire side male and fomale(M&F) and one, described back-fire side male and fomale(M&F) and the cavity circulated for fluid to fiery sidelight sliding surface intermediate formation, top and bottom are connected fluid inlet/outlet pipe respectively, and on fiery sidelight sliding surface, be welded with slag nail described, slag is followed closely and be coated with refractory materials on fiery sidelight sliding surface.Compared with prior art, the utility model has heat exchanging fluid and is evenly distributed, and can realize uniform heat exchange, structure is simple, the advantage such as to install, manufacturing process is comparatively simple.
Description
Technical field
The utility model relates to a kind of Novel water cooling wall for coal gasifier, especially relates to a kind of new and effective Novel water cooling wall for coal gasifier.
Background technology
Coal gasifier combustion chamber stove flame temperature is very high; thermal-radiating intensity is very large, in order to reduce temperature of furnace wall, and protection furnace wall; the general radiations heat energy being absorbed thermal-flame or flue gas in burner hearth by the structure that resistivity against fire is higher, at present primarily of refractory brick and water wall two kinds of structures.Compared with traditional firebrick structure, water wall structure essentially eliminates the drawbacks such as frequent examine and replace refractory liner, consumes expensive, manufacture difficulty, simultaneously, water wall structure list stove gas deliverability is large, have efficient, maximize and the distinguishing feature of long-term operation, therefore vapourizing furnace all have employed novel water wall structure of all kinds mostly at present, comprises bare-tube wall and membrane wall.
At present conventional water wall can fit tightly burner hearth and absorbs the radiant heat of burner hearth and play the effect of sealing simultaneously, and resistance to air loss is good, leaks out little, reduces heat loss due to exhaust gas, improves boiler thermal output, therefore has larger advantage.Due to its compact structure, the most thorough to the protection of furnace wall, therefore furnace wall only need use lagging material, and without refractory materials, furnace wall thickness, weight are all greatly reduced, simplify furnace wall structure, alleviate gross weight of equipment amount; Meanwhile, larger side force can be born, add uprising ability; In addition, compared to refractory brick, water wall structure can dispatch from the factory by assembly, decreases installation workload.
At present, in order to strengthen heat transfer and ensure stopping property, the heat exchange element of membrane wall is generally pipe-fin-tube construction pattern, rifled tube or finned tube (comprising Ω pipe) structural shape.Each water cooled membrane wall heat-transfer surface composition circular passage, pipe is longitudinal arrangement; The pipe of each round shape heat interchanging area element is divided into straight tube to arrange or coiled coil forms.For these forms, first, the heat transfer efficiency that the form of these enhancement of heat transfer can reach is limited, fails the enhancement of heat transfer of maximum strength; Secondly, device manufacturing process is more complicated, relative to traditional firebrick structure, adds manufacturing cost; In addition, in this kind of structure formation, tube panel thermal stress distribution is more complicated, the more difficult control of whole process; Meanwhile, in use, heat-energy losses is reduced in order to reduce byproduct water quantity of steam, water coolant is in supercooled state always and carries out pump circulation, its arrangement form, especially for the pipe group of coiled coil, larger water resistance can be caused, namely add the lift of boiler water circulating pump.
Summary of the invention
The purpose of this utility model is exactly provide a kind of heat exchanging fluid to be evenly distributed to overcome defect that above-mentioned prior art exists, can realize uniform heat exchange, structure is simple, install, the comparatively simple Novel water cooling wall for coal gasifier of manufacturing process.
The purpose of this utility model can be achieved through the following technical solutions: a kind of Novel water cooling wall for coal gasifier, it is characterized in that, this water wall is to being spliced into fit tightly with the firing space of coal gasifier cylindric by two semi-cylindrical heat exchanger plates, described semi-cylindrical heat exchanger plates is to being connected to form through solder contacts to fiery sidelight sliding surface by a back-fire side male and fomale(M&F) and one, described back-fire side male and fomale(M&F) and the cavity circulated for fluid to fiery sidelight sliding surface intermediate formation, top and bottom are connected fluid inlet/outlet pipe respectively, and on fiery sidelight sliding surface, be welded with slag nail described, slag is followed closely and be coated with refractory materials on fiery sidelight sliding surface.
Described heat exchanger plates to being connected by multiple solder contacts by the metal sheet of two different thickness, then carries out side weld aftershaping, and be wherein thick sheet metal sheet to fiery sidelight sliding surface, back-fire side male and fomale(M&F) is sheet metal sheet.Due to spot welding and the shaping sheet metal sheet surface uniform that makes protruding, disturbance can be carried out to the heat exchanging fluid flowing through plate journey cavity, enhance heat transfer.
Described heat exchanger plates is evenly provided with multiple solder contacts to upper, and multiple solder contacts is crisscross arranged, and contact density is 1500 ~ 5000 Ge/㎡, and contact spacing is 20 ~ 100mm.Different contact densities can realize different heat transfer effects.
Described fluid inlet/outlet pipe comprises lower coil pipe, lower branch line, upper coil pipe and upper arm, described lower coil pipe is used for collecting and will enters the heat exchanging fluid of heat exchanger plates to part, described lower branch line one end connects lower coil pipe, the other end connects heat exchanger plates pair, be used for making fluid under pressure, fluid well-distributing in lower coil pipe is assigned between heat exchanger plates pair, described upper arm one end connects heat exchanger plates pair, the other end connects upper coil pipe, be used for the heat exchanging fluid through heat exchange to collect in upper coil pipe under pressure, discharged by upper coil pipe.
Described slag nail is connected with to fiery sidelight sliding surface by the form of welding, and it is one group that two slags are followed closely, and is V-shapedly welded on on fiery sidelight sliding surface.In order to adhere to slag, make its thickness reach running balance, realize with the effect of slag anti-slag.Protect cooling stave on the whole, avoid in-furnace temperature too high.
Described refractory materials uses SiC refractory material, when molten state slag flows above, plays the effect of protection water wall.
In the utility model Novel water cooling wall, in order to easy for installation, overall heat exchange plate chamber be divided into two semi-cylindrical, scrabble up cylindric during installation, fit tightly with firing space.Cooling fluid enters plate journey by cooling stave one end, carries out heat exchange to inboard wall of burner hearth, and whole heat transfer process can by-product low pressure steam according to processing requirement, and due to producing steam, general upper coil diameter is larger than lower coil pipe, is conducive to steam and discharges.Because the contact of evenly gathering between plate journey inner panel pair strengthens the disturbance of heat exchanging fluid, increase heat exchange efficiency.
Cooling stave side towards the fire be welded with slag nail and scribble refractory liner, the two all has good conduction of heat, and slag nail is conducive to slag cooling attachment and melted by heat, and the even dynamic change of thickness of slag blanket, makes range of temperature in burner hearth less.
The utility model make use of plate structure formation flexibly, and simple manufacturing process.Meanwhile, can realize adjusting heat transfer effect by regulating contact density and plate journey cavity space size during design.
Compared with prior art, the utility model has the following advantages:
One, heat exchanging fluid is evenly distributed, and can realize uniform heat exchange;
Heat exchanging fluid first by coil pipe, then is assigned to heat exchange cavity through arm, and the turbulence state of fluid can ensure higher flow velocity simultaneously, and heat exchanging fluid almost distributes completely in whole cavity thus, there will not be local superheating phenomenon.
Two, structure is simple, installs, manufacturing process is comparatively simple;
Whole cooling stave designs according to vapourizing furnace body of heater size, and heat exchanging chamber body manufacturing processed is simple, and the plate of two different thickness is first rolled into semi-cylindrical, after through spot welding, then carry out side weld, last high pressure gas are shaping, just define plate journey heat exchange cavity.Cooling stave is divided into two identical semicolumn heat exchanger plates bundles, and each semicolumn plate bundle integrally, surrounds vapourizing furnace combustion chamber and assembles from both sides, forms a complete cooling stave.
Three, flexible structure, contact density is adjustable, can realize higher heat exchange efficiency;
According to different processing requirements, can contact density between adjustable plate, realize different heat transfer requirements.The existence of contact, the disturbance of energy larger fluid, makes the liquid form of liquid be turbulence state, greatly enhances heat transfer.Contact density is larger, and exchange capability of heat is stronger, and fluid-pressure drop is larger; Contact density is less, and exchange capability of heat weakens, and fluid-pressure drop reduces.
Accompanying drawing explanation
Fig. 1 is the front local structure schematic diagram of the utility model pillow formula heat exchange element;
Fig. 2 is the utility model Novel water cooling wall composition structural representation;
Fig. 3 is the utility model Novel water cooling wall contour structures schematic diagram.
In Fig. 1 shown in label:
A, pillow formula cooling stave carry on the back fiery face, b, pillow formula cooling stave side towards the fire, c, solder contacts;
In Fig. 2 shown in label:
1, back-fire side male and fomale(M&F), 2, slag nail, 3, fluidic heat exchange of fluids plate chamber, 4, to fiery sidelight sliding surface, 5, refractory materials;
In Fig. 3 shown in label:
30, formula cooling stave wall is rested the head on, 31, cooling fluid inlet, 32, lower coil pipe, 33, lower branch line, 34, upper arm, 35, upper coil pipe, 36, cooling fluid outlet.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Embodiment
As shown in Figures 1 to 3, New-type coal gasifying stove water wall of the present utility model, this water wall is to being spliced into fit tightly with the firing space of coal gasifier cylindric by two semi-cylindrical heat exchanger plates, described semi-cylindrical heat exchanger plates is to being connected by multiple solder contacts by the metal sheet of two different thickness, carry out side weld aftershaping again, in pillow formula structure, as shown in Figure 1-2, thick sheet metal sheet is namely rest the head on formula cooling stave side towards the fire b to fiery sidelight sliding surface 4, and sheet metal sheet is that namely back-fire side male and fomale(M&F) 1 is rested the head on formula cooling stave and carried on the back fiery face a.Due to spot welding and the shaping sheet metal sheet surface uniform that makes protruding, form solder contacts c, disturbance can be carried out to the heat exchanging fluid flowing through plate journey cavity, enhance heat transfer, thus strengthen heat transfer effect.
Described heat exchanger plates is evenly provided with multiple solder contacts to upper, and multiple solder contacts is crisscross arranged, and contact density is 1500 ~ 5000 Ge/㎡, and contact spacing is 20 ~ 100mm.Different contact densities can realize different heat transfer effects.Back-fire side male and fomale(M&F) 1 and the fluidic heat exchange of fluids plate chamber 3 of circulating for fluid to fiery sidelight sliding surface 4 intermediate formation, top and bottom are connected fluid inlet/outlet pipe respectively, and on fiery sidelight sliding surface, be welded with slag nail 2 described, slag nail 2 and be coated with refractory materials 5 on fiery sidelight sliding surface.Described slag nail 2 is connected with to fiery sidelight sliding surface by the forms of welding, and it is one group that two slags are followed closely, and is V-shapedly welded on on fiery sidelight sliding surface.In order to adhere to slag, make its thickness reach running balance, realize with the effect of slag anti-slag.Protect cooling stave on the whole, avoid in-furnace temperature too high.Described refractory materials 5 uses SiC refractory material, when molten state slag flows above, plays the effect of protection water wall.Both slag nail 2 and refractory materials 5 all have good conduction of heat, and slag nail 2 is conducive to slag cooling attachment and melted by heat, and the even dynamic change of thickness of slag blanket, makes range of temperature in burner hearth less.
The profile of New-type coal gasifying stove water wall of the present utility model as shown in Figure 3, fluid inlet/outlet pipe is connected with the pillow formula cooling stave wall about 30 formed to fiery sidelight sliding surface 4 by back-fire side male and fomale(M&F) 1, described fluid inlet/outlet pipe comprises lower coil pipe 32, lower branch line 33, upper coil pipe 35 and upper arm 34, described lower coil pipe 32 is used for collecting and will enters the heat exchanging fluid of heat exchanger plates to part, described lower branch line 33 one end connects lower coil pipe, the other end connects heat exchanger plates pair, be used for making fluid under pressure, fluid well-distributing in lower coil pipe is assigned between heat exchanger plates pair, described upper arm 34 one end connects heat exchanger plates pair, the other end connects upper coil pipe 35, the heat exchanging fluid through heat exchange is used for collect in upper coil pipe under pressure, discharged by upper coil pipe.
Cooling fluid is entered by cooling fluid inlet 31, via fluid lower coil pipe 32, fluidic heat exchange of fluids plate chamber 3 is evenly distributed to again by fluid lower branch line 33, flow through whole cooling wallboard chamber from bottom to up, absorb combustion chamber heat, finally under pressure, flow out from heat exchanger plates chamber via arm on fluid 34, by coil pipe on fluid 35, flow out cooling stave eventually through cooling fluid outlet 36, realize whole heat transfer process.
Claims (6)
1. the Novel water cooling wall for coal gasifier, it is characterized in that, this water wall is to being spliced into fit tightly with the firing space of coal gasifier cylindric by two semi-cylindrical heat exchanger plates, described semi-cylindrical heat exchanger plates is to being connected to form through solder contacts to fiery sidelight sliding surface by a back-fire side male and fomale(M&F) and one, described back-fire side male and fomale(M&F) and the cavity circulated for fluid to fiery sidelight sliding surface intermediate formation, top and bottom are connected fluid inlet/outlet pipe respectively, and on fiery sidelight sliding surface, be welded with slag nail described, slag is followed closely and be coated with refractory materials on fiery sidelight sliding surface.
2. a kind of Novel water cooling wall for coal gasifier according to claim 1, it is characterized in that, described heat exchanger plates is to being connected by multiple solder contacts by the metal sheet of two different thickness, carry out side weld aftershaping again, be wherein thick sheet metal sheet to fiery sidelight sliding surface, back-fire side male and fomale(M&F) is sheet metal sheet.
3. a kind of Novel water cooling wall for coal gasifier according to claim 1, it is characterized in that, described heat exchanger plates is evenly provided with multiple solder contacts to upper, and multiple solder contacts is crisscross arranged, contact density is 1500 ~ 5000 Ge/㎡, and contact spacing is 20 ~ 100mm.
4. a kind of Novel water cooling wall for coal gasifier according to claim 1 or 2 or 3, it is characterized in that, described fluid inlet/outlet pipe comprises lower coil pipe, lower branch line, upper coil pipe and upper arm, described lower coil pipe is used for collecting and will enters the heat exchanging fluid of heat exchanger plates to part, described lower branch line one end connects lower coil pipe, the other end connects heat exchanger plates pair, be used for making fluid under pressure, fluid well-distributing in lower coil pipe is assigned between heat exchanger plates pair, described upper arm one end connects heat exchanger plates pair, the other end connects upper coil pipe, the heat exchanging fluid through heat exchange is used for collect in upper coil pipe under pressure, discharged by upper coil pipe.
5. a kind of Novel water cooling wall for coal gasifier according to claim 1, is characterized in that, described slag nail is connected with to fiery sidelight sliding surface by the form of welding, and it is one group that two slags are followed closely, and is V-shapedly welded on on fiery sidelight sliding surface.
6. a kind of Novel water cooling wall for coal gasifier according to claim 1, is characterized in that, described refractory materials uses SiC refractory material, when molten state slag flows above, plays the effect of protection water wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520295279.0U CN204625576U (en) | 2015-05-08 | 2015-05-08 | A kind of Novel water cooling wall for coal gasifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520295279.0U CN204625576U (en) | 2015-05-08 | 2015-05-08 | A kind of Novel water cooling wall for coal gasifier |
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| CN204625576U true CN204625576U (en) | 2015-09-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104789272A (en) * | 2015-05-08 | 2015-07-22 | 德艾柯工程技术（上海）有限公司 | Novel water-cooled wall for coal gasification furnace |
| CN105542866A (en) * | 2016-01-25 | 2016-05-04 | 新疆心连心能源化工有限公司 | Pulverized gas technology |
-
2015
- 2015-05-08 CN CN201520295279.0U patent/CN204625576U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104789272A (en) * | 2015-05-08 | 2015-07-22 | 德艾柯工程技术（上海）有限公司 | Novel water-cooled wall for coal gasification furnace |
| CN104789272B (en) * | 2015-05-08 | 2017-12-05 | 德艾柯工程技术（上海）有限公司 | A kind of novel water cooling wall for coal gasifier |
| CN105542866A (en) * | 2016-01-25 | 2016-05-04 | 新疆心连心能源化工有限公司 | Pulverized gas technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Fengqing Inventor after: Tang Dechang Inventor after: Sun Yuaner Inventor before: Li Fengqing Inventor before: Sun Yuaner |
|
| CB03 | Change of inventor or designer information |