CN214619494U - Recovery unit of boiler blow-down water resource and heat energy - Google Patents
Recovery unit of boiler blow-down water resource and heat energy Download PDFInfo
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- CN214619494U CN214619494U CN202120345514.6U CN202120345514U CN214619494U CN 214619494 U CN214619494 U CN 214619494U CN 202120345514 U CN202120345514 U CN 202120345514U CN 214619494 U CN214619494 U CN 214619494U
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Abstract
The utility model discloses a recovery unit of boiler blow-down water resource and heat energy, including demineralized water tank and oxygen-eliminating device, the oxygen-eliminating device is connected to the demineralized water tank, demineralized water tank's water provides the water for the boiler through the oxygen-eliminating device deoxidization, the sewage of boiler steam pocket is connected respectively to the input interface of a flash tank even the blow-down port and the boiler under the header is decided and is arranged the export, the steam outlet of flash tank connects the oxygen-eliminating device, a filter of flash tank water exit linkage, the acid-base neutralization apparatus input interface of exit linkage of filter, the heat source coil pipe import of a heat exchanger of acid-base neutralization apparatus output interface connection, heat source coil pipe exit linkage to former water tank of heat exchanger, the oxygen-eliminating device is connected behind heat exchanger to the demineralized water tank, heat exchanger sends into the oxygen-eliminating device deoxidization after with the demineralized water heating. The utility model discloses a recovery unit carries out recycle to the continuous blowdown of boiler and the heat energy of periodic blowdown, has practiced thrift the water resource, has reduced the environmental pollution problem.
Description
Technical Field
The utility model relates to a recovery unit of boiler blow-down water resource and heat energy.
Background
The boiler pollution discharge is divided into continuous pollution discharge and periodic pollution discharge. The purpose of continuous blowdown is to discharge a part of dissolved salts in the boiler water to maintain a certain salt content and alkalinity of the boiler water. The purpose of periodic pollution discharge is to discharge insoluble water slag in the boiler water from a lower header of a water-cooled wall. The blowdown time is intermittent. The traditional method is completely and directly discharged, and has the defects of pipeline corrosion, environmental pollution and the like.
Disclosure of Invention
An object of the utility model is to provide a recovery unit of boiler blowdown water resource and heat energy carries out recycle to heat energy wherein through one set of recovery unit with the continuous blowdown and the periodic blowdown of boiler, has overcome shortcomings such as corruption pipeline, environmental pollution.
In order to achieve the above purpose, the utility model discloses a scheme is: a recovery device for boiler blow-down water resources and heat energy comprises a desalting water tank and a deaerator, wherein the desalting water tank is connected with the deaerator, water in the desalting water tank is deaerated by the deaerator to provide water for a boiler, an input interface of a flash tank is respectively connected with a sewage continuous discharge outlet of a boiler drum and a sewage constant discharge outlet of a boiler lower header, the flash tank separates water and vapor of the received sewage and then discharges the separated sewage from a steam outlet and a water outlet, wherein, the steam outlet of flash vessel connects the oxygen-eliminating device, and flash vessel water exit linkage filter, the exit linkage of filter acid-base neutralization device input interface, and the heat source coil pipe of a heat exchanger of acid-base neutralization device output interface connection import, the heat source coil pipe exit linkage of heat exchanger is to former water tank, connects the oxygen-eliminating device behind heat exchanger in the demineralized water case, and the oxygen-eliminating device oxygen-eliminating is sent into after heat exchanger heats the demineralized water.
The scheme is further as follows: the filter screen of the filter comprises two layers of aluminum nets, and a layer of stainless steel net is added between the two layers of aluminum nets.
The scheme is further as follows: the aperture of the meshes of the aluminum net and the stainless steel net is 3 multiplied by 6mm, the thickness of the aluminum net is 0.45mm, the thickness of the stainless steel net is 0.3mm, and the meshes of the three layers of nets are staggered and overlapped.
The scheme is further as follows: a shunt pipe is arranged at the inlet of a heat source coil pipe of the heat exchanger, an adjusting valve is arranged on the shunt pipe, and the shunt pipe is connected to an original water tank after passing through the adjusting valve.
The utility model has the advantages that: through one set of recovery unit to the continuous blowdown of boiler and the heat energy of periodic blowdown carry out recycle, can retrieve boiler blowdown water resource promptly, preheat boiler moisturizing again, the gas of having saved extraction steam engine is given reverse osmosis heating of intaking, has improved heat utilization ratio, has practiced thrift the water resource, has reduced the environmental pollution problem.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
A recycling device for boiler blow-down water resources and heat energy is shown in figure 1 and comprises a desalted water tank 1 and a deaerator 2, wherein the desalted water tank is connected with a deaerator, water in the desalted water tank is deaerated by the deaerator to provide water for a boiler 3, an input interface of a flash tank 4 is respectively connected with a sewage continuous discharge outlet of a boiler drum 301 and a sewage constant discharge outlet of a boiler lower header 302, the flash tank 4 is a known standard device and is used for carrying out pressure reduction decomposition on high-temperature and high-pressure continuous discharge sewage of the boiler into steam and water, and the flash tank is used for separating and then discharging the received water vapor from the steam outlet and the water outlet; in order to utilize the energy in the high-temperature and high-pressure sewage, because the salt content of the discharged secondary steam is lower and conforms to the water inlet of a boiler, a steam outlet of a flash tank is connected with a deaerator, and the temperature is reduced in the deaerator to form condensed water for utilization; simultaneously with filter 5 of flash vessel water exit linkage, the exit linkage of filter is the input interface of an acid-base neutralization device 6, the heat source coil pipe 701 import of a heat exchanger 7 of output interface connection of acid-base neutralization device 6, the heat source coil pipe exit linkage of heat exchanger 7 is to former water tank 8, the water of former water tank is squeezed into the demineralized water case again through the pump, the demineralized water case connects the oxygen-eliminating device behind heat exchanger heat exchange coil pipe 702, the efficiency that the oxygen-eliminating can be improved to the oxygen-eliminating is sent into the oxygen-eliminating device deoxidization after heat exchanger heats the demineralized water.
Wherein, because the flash tank does not cool down the temperature that its water outlet goes out the temperature of water and can reach 300 degrees centigrade, consequently, the filter screen of filter is compound high temperature resistant filter screen, including two-layer aluminium net 501 around, the middle one deck stainless steel net 502 that adds of two-layer aluminium net. The mesh apertures of the aluminum net and the stainless steel net are both 3 multiplied by 6mm, the thickness of the aluminum net is 0.45mm, and the thickness of the stainless steel net is 0.3 mm. The meshes of the three layers of nets are staggered and overlapped with each other. The three layers of filter screens are overlapped together and can be taken out for replacement and cleaning at any time. Dirt water slag filtered out from the left side of the filter screen in the filter box body is discharged through a drain pipe and a drain valve 503 arranged on the box body, the alkalinity of outlet water on the right side of the filter screen in the filter box body is slightly higher, in order to reduce the alkalinity, the acidity of cation bed forward washing water 601 of the acid-base neutralizing device 6 is used for neutralizing to reach the alkalinity standard of demineralized water, the acid-base neutralizing device 6 is general equipment, and the neutralizing water is neutral by adjusting a valve of the cation bed forward washing water.
Wherein: in order to regulate the hot water entering the heat exchanger 7, a shunt pipe 9 is arranged at the inlet of a heat source coil pipe of the heat exchanger, a regulating valve 10 is arranged on the shunt pipe, and the shunt pipe is connected to the original water tank after passing through the regulating valve.
After the water in the raw water tank is heated, the water in the raw water tank does not need to be additionally heated in the reverse osmosis step, and the steam which is required to be extracted from the steam engine and heated by the water is saved.
Claims (4)
1. A recovery device for boiler blow-down water resources and heat energy comprises a desalting water tank and a deaerator, wherein the desalting water tank is connected with the deaerator, water in the desalting water tank is deaerated by the deaerator to provide water for a boiler, an input interface of a flash tank is respectively connected with a sewage continuous discharge outlet of a boiler drum and a sewage constant discharge outlet of a boiler lower header, the flash tank separates water and vapor of the received sewage and then discharges the separated sewage from a steam outlet and a water outlet, the device is characterized in that a steam outlet of the flash tank is connected with a deaerator, a water outlet of the flash tank is connected with a filter, an outlet of the filter is connected with an input interface of an acid-base neutralization device, an output interface of the acid-base neutralization device is connected with an inlet of a heat source coil of a heat exchanger, an outlet of the heat source coil of the heat exchanger is connected to a raw water tank, a desalted water tank is connected with the deaerator after passing through the heat exchanger, and the heat exchanger heats desalted water and then sends the heated desalted water into the deaerator to deaerate.
2. The apparatus for recovering water and heat energy from boiler sewage according to claim 1, wherein the filtering net of the filter comprises two layers of aluminum nets, and a layer of stainless steel net is added between the two layers of aluminum nets.
3. The recovery device of boiler blow-down water resources and heat energy according to claim 2, characterized in that the mesh aperture of the aluminum net and the stainless steel net is 3 x 6mm, the thickness of the aluminum net is 0.45mm, the thickness of the stainless steel net is 0.3mm, and the meshes of the three layers of nets are staggered and overlapped.
4. The apparatus for recovering water and heat from boiler blow-down water according to claim 1, wherein a flow dividing pipe is provided at the inlet of the heat source coil of said heat exchanger, and an adjusting valve is provided on the flow dividing pipe, and the flow dividing pipe is connected to the raw water tank after passing through the adjusting valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120345514.6U CN214619494U (en) | 2021-02-07 | 2021-02-07 | Recovery unit of boiler blow-down water resource and heat energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120345514.6U CN214619494U (en) | 2021-02-07 | 2021-02-07 | Recovery unit of boiler blow-down water resource and heat energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214619494U true CN214619494U (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120345514.6U Active CN214619494U (en) | 2021-02-07 | 2021-02-07 | Recovery unit of boiler blow-down water resource and heat energy |
Country Status (1)
| Country | Link |
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| CN (1) | CN214619494U (en) |
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2021
- 2021-02-07 CN CN202120345514.6U patent/CN214619494U/en active Active
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