CN210267189U - Waste heat utilization system for heating cooling water backwater of slag cooler by using boiler blow-down water - Google Patents
Waste heat utilization system for heating cooling water backwater of slag cooler by using boiler blow-down water Download PDFInfo
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- CN210267189U CN210267189U CN201921139084.1U CN201921139084U CN210267189U CN 210267189 U CN210267189 U CN 210267189U CN 201921139084 U CN201921139084 U CN 201921139084U CN 210267189 U CN210267189 U CN 210267189U
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Abstract
The utility model discloses an utilize waste heat utilization system of boiler blow-off water heating cold sediment ware cooling water return water, the heat exchange tube is located the hot-water tank, the hydrophobic water pipe that comes of boiler body is linked together through the entry of first valve with the heat exchange tube after even the water pipe that comes through pipeline and pipe, the export of cold sediment ware cooling water return water pipe is divided into two the tunnel, wherein be linked together with the cooling tower all the way, another way is linked together through second valve and hot-water tank entry, industry water pipe and running water pipe are linked together with the entry of hot-water tank, the export of hot-water tank is divided into two the tunnel, wherein be linked together through third valve and hot water loading mouth all the way, another way is linked together through fourth valve and hot water and heat supply pipeline, this system can effectually retrieve and utilize the heat of boiler blow-off water.
Description
Technical Field
The utility model belongs to the technical field of boiler equipment, a utilize waste heat utilization system of boiler blow-down water heating slag cooler cooling water return water is related to.
Background
During the operation of the boiler, the high-temperature salt-containing softened water in the boiler barrel is continuously evaporated and concentrated, and in order to enable the boiler water to meet the specified requirements, the boiler water needs to be discharged. The pollution discharge mode comprises continuous pollution discharge and periodic pollution discharge, wherein the continuous pollution discharge is to continuously and uninterruptedly discharge a certain amount of concentrated water from the part with the highest salt concentration in the boiler circulation loop and simultaneously convey the same amount of fresh softened water so as to reduce the salt content and the alkalinity of the boiler water; the periodic blowdown is to supplement the deficiency of continuous blowdown, and the sediments in the drum are discharged from low points of a lower drum and the like of the boiler so as to improve the water quality of the boiler. The water discharged by the two is the saturated water temperature (the temperature reaches 250 ℃) under the rated pressure of the boiler, the heat energy is extremely high, and the discharge capacity is about 3% of the evaporation capacity of the boiler. Many enterprises discharge this high temperature water directly into the trench, resulting in a large waste of heat energy and water resources.
The cooling of the traditional slag cooler is realized through a cooling tower, after cooling water absorbs heat in the slag cooler, return water is sent to the cooling tower for cooling and heat dissipation, and other heat is dissipated to the air, so that the cooling water cannot be recycled, and meanwhile, the waste of water resources is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide an utilize waste heat utilization system of boiler blow-off water heating cold sediment ware cooling water return water, this system can effectual recovery and utilize the heat of boiler blow-off water.
In order to achieve the above purpose, the waste heat utilization system for heating the cooling water return water of the slag cooler by utilizing the boiler sewage of the utility model comprises a boiler body drainage water inlet pipe, a continuous drainage water inlet pipe, a first valve, a heat exchange pipe, a slag cooler cooling water return pipe, a cooling tower, a second valve, a hot water tank, an industrial water inlet pipe, a tap water inlet pipe, a third valve, a hot water loading port, a fourth valve and a hot water heat supply pipeline;
the heat exchange tube is positioned in the hot water tank, a water draining water inlet pipe of the boiler body and a water draining connecting water inlet pipe are connected with an inlet of the heat exchange tube through a first valve after being connected in parallel through a pipeline, an outlet of a cooling water return pipe of the slag cooler is divided into two paths, one path is communicated with the cooling tower, the other path is communicated with an inlet of the hot water tank through a second valve, an industrial water inlet pipe and a tap water inlet pipe are communicated with an inlet of the hot water tank, an outlet of the hot water tank is divided into two paths, one path is communicated with a hot water loading port through a third valve, and the other path is communicated with a hot water heat supply pipeline through.
The boiler also comprises a fixed-discharge water inlet pipe and a fixed-discharge flash tank, wherein the fixed-discharge water inlet pipe and the fixed-discharge flash tank are communicated with the drainage water inlet pipe and the continuous-discharge water inlet pipe of the boiler body.
And a fifth valve is arranged on the cooling water return pipe of the slag cooler.
And a sixth valve is arranged between the first valve and the inlet of the heat exchange tube.
The industrial water inlet pipe is provided with a seventh valve, and the tap water inlet pipe is provided with an eighth valve.
The outlet of the hot water tank is communicated with a hot water loading port and a hot water parallel heat supply pipeline through a ninth valve, a hot water pump, a tenth valve and a flowmeter in sequence.
And an eleventh valve is arranged at the inlet of the fixed-discharge flash tank.
The utility model discloses following beneficial effect has:
utilize waste heat utilization system of boiler blow-off water heating slag cooler cooling water return water when concrete operation, the slag cooler cooling water return water of utilizing slag cooler cooling water return pipe output absorbs the hydrophobic boiler body who comes the water pipe output of boiler body and hydrophobic and even the heat of arranging the water of even arranging that comes the water pipe output, cold slag cooler cooling water return water after the absorption heat is sent into in hot water loading mouth and hot water and the heat supply pipeline to realize retrieving and utilizing the thermal purpose of boiler blow-off water, create extra economic benefits for the enterprise when recycle heat energy and water resource. Compared with the prior art, the utility model discloses can effectively retrieve cold sediment ware cooling water return water, reduce its water waste that directly discharges and lead to after cooling through the cooling tower. Meanwhile, the recovered heat can be output as hot water, and heating can be performed in winter, so that additional economic benefits are created for enterprises.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a cooling water return pipe of the slag cooler, 21 is a first valve, 22 is a second valve, 23 is a third valve, 24 is a fourth valve, 25 is a fifth valve, 26 is a sixth valve, 27 is a seventh valve, 28 is an eighth valve, 29 is a ninth valve, 210 is a tenth valve, 211 is an eleventh valve, 3 is a cooling tower, 4 is a hot water tank, 5 is a boiler body drainage water supply pipe, 6 is a continuous water supply pipe, 7 is a fixed water supply pipe, 8 is a fixed water flash tank, 9 is a tubular heat exchanger, 10 is a hot water pump, 11 is a flow meter, 12 is a hot water loading port, 13 is a hot water and heat supply pipeline, 14 is an industrial water supply pipe, and 15 is a tap water supply pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the waste heat utilization system for heating cooling water return water of a slag cooler by using boiler sewage according to the present invention includes a boiler body drainage water inlet pipe 5, a continuous drainage water inlet pipe 6, a first valve 21, a heat exchange pipe 9, a slag cooler cooling water return pipe 1, a cooling tower 3, a second valve 22, a hot water tank 4, an industrial water inlet pipe 14, a tap water inlet pipe 15, a third valve 23, a hot water loading port 12, a fourth valve 24, and a hot water and heat supply pipeline 13; the heat exchange tube 9 is positioned in the hot water tank 4, the water draining water inlet pipe 5 of the boiler body and the water draining and feeding pipe 6 are connected with the inlet of the heat exchange tube 9 through a first valve 21 after being connected in parallel through a pipeline, the outlet of the slag cooler cooling water return pipe 1 is divided into two paths, one path is communicated with the cooling tower 3, the other path is communicated with the inlet of the hot water tank 4 through a second valve 22, the industrial water inlet pipe 14 and the tap water inlet pipe 15 are communicated with the inlet of the hot water tank 4, the outlet of the hot water tank 4 is divided into two paths, one path is communicated with the hot water loading port 12 through a third valve 23, and the other path is communicated with the hot water and heat supply pipeline 13 through a fourth.
The utility model discloses still including arranging water pipe 7 and arranging flash tank 8 surely, wherein, arrange water pipe 7 surely and arrange flash tank 8 surely and the hydrophobic water pipe 5 of coming of boiler body and even arrange water pipe 6 and be linked together.
A fifth valve 25 is arranged on the cooling water return pipe 1 of the slag cooler; a sixth valve 26 is arranged between the first valve 21 and the inlet of the heat exchange tube 9; a seventh valve 27 is arranged on the industrial water inlet pipe 14, and an eighth valve 28 is arranged on the tap water inlet pipe 15; an outlet of the hot water tank 4 is communicated with a hot water loading port 12 and a hot water heat supply pipeline 13 through a ninth valve 29, a hot water pump 10, a tenth valve 210 and a flowmeter 11 in sequence; an eleventh valve 211 is provided at the inlet of the fixed displacement flash tank 8.
The utility model discloses a concrete operation process does:
the drained water of the boiler body output by the drainage water inlet pipe 5 of the boiler body and the continuous drainage water output by the continuous drainage water inlet pipe 6 converge and then enter the heat exchange pipe 9 for heat release; the cold sediment ware cooling water return water of cold sediment ware cooling water wet return 1 output is divided into two the tunnel, wherein enter into cooling tower 3 all the way, another tunnel enters into hot-water tank 4 and absorbs heat, when cold sediment ware cooling water return water is not enough, the water that industrial water came water pipe 14 and running water and came water pipe 15 output enters into hot-water tank 4 and absorbs heat, the moisture behind the heat absorption of hot-water tank 4 output is two tunnel, wherein directly carry to the tank car in through hot water loading mouth 12 all the way, another tunnel merges into in the heat supply pipeline through hot water and heat supply pipeline 13.
The water replenishing of the industrial water inlet pipe 14 and the tap water inlet pipe 15 is used as a standby scheme for the insufficient cooling water of the slag cooler; the heat exchange tube 9 may be composed of a light tube or a finned tube or other enhanced heat transfer tubes.
The fixed-discharge flash tank 8 is mainly used for absorbing the regular sewage discharged by the fixed-discharge water inlet pipe 7, and the fixed-discharge water is difficult to recycle the waste heat because the fixed-discharge water has short discharge time and high temperature and the common heat exchanger is difficult to adapt to the short-time high-heat-energy rapid recycling.
Utilize boiler blow off water, through the cold sediment ware cooling water return water of heat exchanger heating, realize the waste heat utilization of boiler blow off water, reduce the water waste that the direct emission of cold sediment ware cooling water return water leads to after passing through cooling tower 3 cooling, when actual operation, can design corresponding parameter according to actual need, change performance parameters such as blow off water flow, cold sediment ware cooling water return water flow, hot water flow and hot water temperature.
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A waste heat utilization system for heating cooling water return water of a slag cooler by using boiler blow-down water is characterized by comprising a boiler body drainage water inlet pipe (5), a continuous drainage water inlet pipe (6), a first valve (21), a heat exchange pipe (9), a slag cooler cooling water return pipe (1), a cooling tower (3), a second valve (22), a hot water tank (4), an industrial water inlet pipe (14), a tap water inlet pipe (15), a third valve (23), a hot water loading port (12), a fourth valve (24) and a hot water and heat supply pipeline (13);
the heat exchange pipe (9) is positioned in the hot water tank (4), the water draining water inlet pipe (5) of the boiler body and the water connecting and draining pipe (6) are communicated with the inlet of the heat exchange pipe (9) through a first valve (21) after being connected in parallel through a pipeline, the outlet of the slag cooler cooling water return pipe (1) is divided into two paths, one path is communicated with the cooling tower (3), the other path is communicated with the inlet of the hot water tank (4) through a second valve (22), the industrial water inlet pipe (14) and the tap water inlet pipe (15) are communicated with the inlet of the hot water tank (4), the outlet of the hot water tank (4) is divided into two paths, one path is communicated with the hot water loading port (12) through a third valve (23), and the other path is communicated with the hot water and heat supply pipeline (13) through a fourth valve (24).
2. The waste heat utilization system for heating the cooling water return water of the slag cooler by using the boiler blow-off water as claimed in claim 1, further comprising a fixed-discharge water inlet pipe (7) and a fixed-discharge flash tank (8), wherein the fixed-discharge water inlet pipe (7) and the fixed-discharge flash tank (8) are communicated with the drainage water inlet pipe (5) and the continuous-discharge water inlet pipe (6) of the boiler body.
3. The waste heat utilization system for heating the return water of the cooling water of the slag cooler by utilizing the boiler blow-down water as claimed in claim 2, wherein a fifth valve (25) is arranged on the return water pipe (1) of the cooling water of the slag cooler.
4. The waste heat utilization system for heating the cooling water backwater of the slag cooler by utilizing the boiler blow-down water as claimed in claim 3, characterized in that a sixth valve (26) is arranged between the first valve (21) and the inlet of the heat exchange pipe (9).
5. The waste heat utilization system for heating the cooling water return water of the slag cooler by using the boiler blow-down water as claimed in claim 4, wherein a seventh valve (27) is arranged on the industrial water inlet pipe (14), and an eighth valve (28) is arranged on the tap water inlet pipe (15).
6. The waste heat utilization system for heating the cooling water return water of the slag cooler by using the boiler blow-off water as claimed in claim 5, wherein an outlet of the hot water tank (4) is communicated with the hot water loading port (12) and the hot water parallel heat supply pipeline (13) sequentially through a ninth valve (29), a hot water pump (10), a tenth valve (210) and a flowmeter (11).
7. The waste heat utilization system for heating the cooling water return water of the slag cooler by using the boiler blow-off water as claimed in claim 6, wherein an eleventh valve (211) is arranged at an inlet of the fixed-discharge flash tank (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921139084.1U CN210267189U (en) | 2019-07-18 | 2019-07-18 | Waste heat utilization system for heating cooling water backwater of slag cooler by using boiler blow-down water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921139084.1U CN210267189U (en) | 2019-07-18 | 2019-07-18 | Waste heat utilization system for heating cooling water backwater of slag cooler by using boiler blow-down water |
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| CN210267189U true CN210267189U (en) | 2020-04-07 |
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| CN201921139084.1U Active CN210267189U (en) | 2019-07-18 | 2019-07-18 | Waste heat utilization system for heating cooling water backwater of slag cooler by using boiler blow-down water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296388A (en) * | 2019-07-18 | 2019-10-01 | 中国华能集团清洁能源技术研究院有限公司 | Utilize the afterheat utilizing system and method for boiler blowdown water heating slag cooler cooling water return water |
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2019
- 2019-07-18 CN CN201921139084.1U patent/CN210267189U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296388A (en) * | 2019-07-18 | 2019-10-01 | 中国华能集团清洁能源技术研究院有限公司 | Utilize the afterheat utilizing system and method for boiler blowdown water heating slag cooler cooling water return water |
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