CN204153772U - Slag cooler at the bottom of a kind of water-cooled flash distillation - Google Patents
Slag cooler at the bottom of a kind of water-cooled flash distillation Download PDFInfo
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- CN204153772U CN204153772U CN201420602872.0U CN201420602872U CN204153772U CN 204153772 U CN204153772 U CN 204153772U CN 201420602872 U CN201420602872 U CN 201420602872U CN 204153772 U CN204153772 U CN 204153772U
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- slag
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- slag cooler
- flash distillation
- cooled flash
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Abstract
Slag cooler at the bottom of a kind of water-cooled flash distillation, comprise end slag cooler body, the end slag inlet of slag cooler body is positioned at top, boiler slag discharging tube is connected by slag feed pipe, individual layer or multi-level water spray pipeline that upper position installs the level of being equipped with is positioned in end slag cooler body, every layer of water pipeline arranges one or more sparge pipe, the steam discharge pipe being communicated to follow-up water treatment system is arranged at slag cooler base side top, the end, the end slag exhaust outlet being communicated to follow-up slag conveyer is arranged at bottom, the utility model adopts water-cooled flash principle, make full use of the latent heat of vaporization of cooling water, cooling water and end slag heat exchange strong, good cooling results, cooling capacity is strong, cooling water adopts single or multiple lift to arrange, cooling effect is better, cooling water inflow is low, and to end slag particle degree strong adaptability, characteristics of compact layout, floor space is less.
Description
Technical field
The utility model relates to CFB Slag cooling technology field, particularly slag cooler at the bottom of a kind of water-cooled flash distillation.
Background technology
Emission control and the cooling of end slag are the outstanding problems perplexing CFBB power plant at present, directly have influence on the safe and stable operation of whole unit.Owing to there is slagging scorification, wearing and tearing, letting cinder control lost efficacy, do not reach expection cooling effect and the problem such as little of exerting oneself, and slag cooler fault causes very large economic loss to power plant.At present, the Slag Cooler for Circulation Fluidized Bed Boiler that range of application is wider mainly contains water cold drum formula and wind and water combined fluidized bed formula two kinds.
Although water cold drum formula slag cooler have control relatively simple, to advantages such as granularity strong adaptabilities, but there is following shortcoming: 1) heat transfer coefficient relatively low, 2) frame for movement fault phase for more, 3) to 300MW grade recycle fluidized-bed combustion boiler, when adopting condensate water as cooling medium, its pressure is higher is 3.0-3.5MPa, double-layer seal sleeve and Inlet and outlet water swivel joint are had higher requirement, cause swivel joint easily to occur leaking water problem, 4) whole recovery of heat are had difficulties.
Wind and water combined cooling bed formula slag cooler efficiently utilizes the two phase flow technology of fluidized-bed combustion boiler maturation, heat transfer efficiency is high, its principle is: cold air is transported to the air compartment of slag cooler by high pressure positive blower, then air distribution plate is flowed uniformly across, contact with the slag on air distribution plate, under fluidised state, cold air and slag carry out heat exchange, cold air is heated, and slag is cooled.In addition, arrange wall-cooling surface in slag cooler, more effectively can absorb heat of slags, reduce slag temperature, improve boiler efficiency.This slag cooler adopts fluidized bed principle and corresponding construction, and the heat transfer coefficient between slag particle and heating surface is high, and slag cooler is exerted oneself greatly; By air and water two media, the heat to lime-ash is recycled, and improves boiler efficiency.But this slag cooler exists slag input to be controlled difficulty, granularity bad adaptability, runs the shortcomings such as control is complicated, fault rate is relatively high, is difficult to the needs meeting boiler controller system reliability service.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the purpose of this utility model is to provide slag cooler at the bottom of a kind of water-cooled flash distillation, have the technical characterstics such as cold slag is effective, cooling water inflow is few, end slag particle degree strong adaptability, floor space are little, system is more simple and reliable, and with low cost.
To achieve these goals, the technical solution adopted in the utility model is:
Slag cooler at the bottom of a kind of water-cooled flash distillation, comprise end slag cooler body 7, the slag inlet of end slag cooler body 7 is positioned at top, boiler slag discharging tube is connected by slag feed pipe 9, individual layer or multi-level water spray pipeline that upper position installs the level of being equipped with is positioned in end slag cooler body 7, every layer of water pipeline arranges one or more sparge pipe, and end slag cooler body 7 upper lateral part has the steam discharge pipe 3 being communicated to follow-up water treatment system, and the end slag exhaust outlet being communicated to follow-up slag conveyer 8 is arranged at bottom.
Further, described boiler slag discharging tube is connected via comb formula combination valve 1, compensator 2 and slag feed pipe 9 slag inlet with slag cooler body of the described end 7 successively.
Further, described water pipeline has two-layer, is upper strata water pipeline 5 and lower floor's water pipeline 6 respectively.
Further, described sparge pipe has two.
Further, described every root sparge pipe has one or more water jet, and the water spraying direction of described water jet is downward.
Further, described follow-up slag conveyer 8 is drag conveyor.
Further, the outside coated external thermal insulation 1 of slag cooler body of the described end 7, the outside coated external thermal insulation 2 10 of described steam discharge pipe 3.
Further, described slag feed pipe 9 is inserted into slag cooler body 7 inside, the end.
Compared with prior art, the beneficial effects of the utility model are:
1, adopt water-cooled flash principle, make full use of the latent heat of vaporization of cooling water, strongly, good cooling results, cooling capacity is strong for cooling water and end slag heat exchange.
2, cooling water adopts two-layer layout, and cooling effect is better.
3, cooling water fully absorbs heat, and cooling water inflow is low, 10% of not enough existing conventional water cooling roller slag cooler cooling water inflow.
4, inner without heating surface, end slag moves in the mode of moving bed, to end slag particle degree strong adaptability.
5, this cooler characteristics of compact layout, floor space is less.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is that A of the present utility model is to top view.
Detailed description of the invention
Embodiment of the present utility model is described in detail below in conjunction with drawings and Examples.
As depicted in figs. 1 and 2, slag cooler at the bottom of a kind of water-cooled flash distillation of the present utility model, comprise top with slag inlet and the bottom end slag cooler body 7 with slag notch, end slag cooler body 7 is a cavity, the bore of slag notch is larger, the follow-up slag conveyer 8 (the present embodiment selection drag conveyor) of direct correspondence, is convenient to conveying.Boiler slag discharging tube is connected via comb formula combination valve 1, compensator 2 and slag feed pipe 9 slag inlet with end slag cooler body 7 successively, and it is inner that slag feed pipe 9 is inserted into end slag cooler body 7 with certain degree of depth.The end slag that temperature is about 900 DEG C enters into end slag cooler body 7 thus, after cooling, is directly seen off by follow-up slag conveyer 8.
The water pipeline water spray of cooling mainly by being positioned at position, slag cooler body 7 middle and upper part, the end realizes, and water pipeline can be individual layer or multilayer, sets according to actual conditions.Select double-deck in the present embodiment, be respectively upper strata water pipeline 5 and lower floor's water pipeline 6, the sparge pipe of every layer can be one and also can be many, and also set according to actual conditions, in the present embodiment, each layer is two.The water jet that every root sparge pipe has some water spraying directions downward.Cooling water enters end slag cooler body 7 via upper strata water pipeline 5 and lower floor's water pipeline 6 respectively and carries out end slag cooling, and after cooling water vaporization, enter follow-up water treatment system via steam discharge pipe 3, cooling water circulation utilizes.
At the bottom of a kind of water-cooled flash distillation of the present utility model, slag cooler operation principle is: CFBB discharge temperature is about the end slag of 900 DEG C via after CFBB deslagging comb formula combination valve 1, compensator 2 and slag feed pipe 9, enter end slag cooler 7, the cooling water sprayed by the upper strata water pipeline 5 and lower floor's water pipeline 6 that are arranged in slag cooler 7 middle and upper part, the end carries out the cooling of end slag, slag of the cooled end moves down in the mode of moving bed, and translational speed is determined by the movement velocity of the drag conveyor being arranged in end slag cooler 7.The steam that vaporization generates enters follow-up water treatment system via steam discharge pipe 3.
Claims (8)
1. slag cooler at the bottom of a water-cooled flash distillation, comprise end slag cooler body (7), it is characterized in that, the slag inlet at end slag cooler body (7) is positioned at top, boiler slag discharging tube is connected by slag feed pipe (9), individual layer or multi-level water spray pipeline that upper position installs the level of being equipped with is positioned at at the end slag cooler body (7), every layer of water pipeline arranges one or more sparge pipe, end slag cooler body (7) upper lateral part has the steam discharge pipe (3) being communicated to follow-up water treatment system, the end slag exhaust outlet being communicated to follow-up slag conveyer (8) is arranged at bottom.
2. slag cooler at the bottom of water-cooled flash distillation according to claim 1, it is characterized in that, described boiler slag discharging tube is connected via comb formula combination valve (1), compensator (2) and slag feed pipe (9) slag inlet with described end slag cooler body (7) successively.
3. slag cooler at the bottom of water-cooled flash distillation according to claim 1, it is characterized in that, described water pipeline has two-layer, is upper strata water pipeline (5) and lower floor's water pipeline (6) respectively.
4. slag cooler at the bottom of water-cooled flash distillation according to claim 1 or 3, it is characterized in that, described sparge pipe has two.
5. slag cooler at the bottom of water-cooled flash distillation according to claim 4, it is characterized in that, described every root sparge pipe has one or more water jet, and the water spraying direction of described water jet is downward.
6. slag cooler at the bottom of water-cooled flash distillation according to claim 1, it is characterized in that, described follow-up slag conveyer (8) is drag conveyor.
7. slag cooler at the bottom of water-cooled flash distillation according to claim 1, it is characterized in that, the outside coated external thermal insulation one (4) of described end slag cooler body (7), the outside coated external thermal insulation two (10) of described steam discharge pipe (3).
8. slag cooler at the bottom of water-cooled flash distillation according to claim 1, is characterized in that: it is inner that described slag feed pipe (9) is inserted into end slag cooler body (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420602872.0U CN204153772U (en) | 2014-10-17 | 2014-10-17 | Slag cooler at the bottom of a kind of water-cooled flash distillation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420602872.0U CN204153772U (en) | 2014-10-17 | 2014-10-17 | Slag cooler at the bottom of a kind of water-cooled flash distillation |
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| CN204153772U true CN204153772U (en) | 2015-02-11 |
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| CN201420602872.0U Active CN204153772U (en) | 2014-10-17 | 2014-10-17 | Slag cooler at the bottom of a kind of water-cooled flash distillation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329664A (en) * | 2014-10-17 | 2015-02-04 | 中国华能集团清洁能源技术研究院有限公司 | Water-cooling flash evaporation bottom slag cooler |
-
2014
- 2014-10-17 CN CN201420602872.0U patent/CN204153772U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329664A (en) * | 2014-10-17 | 2015-02-04 | 中国华能集团清洁能源技术研究院有限公司 | Water-cooling flash evaporation bottom slag cooler |
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