CN209876892U

CN209876892U - Recycling device for waste steam emission of deaerator

Info

Publication number: CN209876892U
Application number: CN201821580668.8U
Authority: CN
Inventors: 黄小飞; 蒋雪芬; 余浩
Original assignee: Quzhou Donggang Environmental Thermal Power Co Ltd
Current assignee: Quzhou Donggang Environmental Thermal Power Co Ltd
Priority date: 2018-09-27
Filing date: 2018-09-27
Publication date: 2019-12-31
Anticipated expiration: 2028-09-27

Abstract

The utility model relates to a waste gas recovery utilizes technical field, and discloses a recycle device that oxygen-eliminating device exhaust steam discharged, including deoxidization water tank and shell, the fixed intercommunication of top center department of deoxidization water tank has the deoxidization tower head, the fixed intercommunication of lateral wall of deoxidization tower head has first admission line and inlet channel, the fixed intercommunication in bottom of deoxidization water tank has outlet conduit, the fixed intercommunication in one side of shell has the three-way pipe, the both ends that the shell was kept away from to the three-way pipe are fixed the intercommunication respectively and are had second admission line and exhaust-gas discharge pipeline, the last pipe valve that is provided with of exhaust-gas discharge pipeline, the interior top fixedly connected with baffle of shell, be provided with the space between the interior bottom of baffle and shell. The device for recycling the exhaust steam of the deaerator directly introduces the exhaust steam of the high-pressure deaerator into a steam turbine shaft seal air leakage conveying pipeline, and the exhaust steam and the steam turbine shaft seal air leakage conveying pipeline enter a shaft seal heater together to be cooled and recycle heat energy and condensed water of the steam turbine shaft seal air leakage conveying pipeline.

Description

Recycling device for waste steam emission of deaerator

Technical Field

The utility model relates to a waste gas recovery utilizes technical field, specifically is a recycle device that oxygen-eliminating device exhaust steam discharged.

Background

The working principle of the thermal-type high-pressure deaerator is that the desalted water is heated by steam to be in a saturated state by utilizing the gas solution law, Henry's law and the composition law of liquid level full pressure, Dalton's law, thus, the pressure of the space above the liquid level of the demineralized water is basically composed of steam pressure, gases except oxygen and oxygen in the demineralized water can escape from the water level, the escaped gas is discharged into the atmosphere through a deaerator waste gas discharge pipeline by the pressure of the escaped gas, so that the oxygen in the desalted water is eliminated, the oxygen corrosion of a steam-water pipeline of a high-pressure water supply system and a boiler system is prevented, but in the process of removing oxygen and gases except oxygen, part of steam is also discharged into the atmosphere at the same time, thus bringing about steam quality and heat loss, meanwhile, the discharged steam and condensed water thereof bring certain negative effects on the steel frame structure of the surrounding factory buildings and the sanitation of the ground environment.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a to prior art's is not enough, the utility model provides a recycle device that oxygen-eliminating device exhaust steam discharged possesses advantages such as steam recovery, heat recovery, has solved oxygen-eliminating device steam quality and calorific loss's problem.

(II) technical scheme

For the purpose of realizing above-mentioned steam recovery, heat recovery, the utility model provides a following technical scheme: a recycling device for waste steam emission of a deaerator comprises a deaerator water tank and a shell, wherein a deaerator tower head is fixedly communicated with the center of the top of the deaerator water tank, a first air inlet pipeline and an air inlet pipeline are fixedly communicated with the side wall of the deaerator tower head, a water outlet pipeline is fixedly communicated with the bottom of the deaerator water tank, a three-way pipe is fixedly communicated with one side of the shell, two ends, far away from the shell, of the three-way pipe are respectively and fixedly communicated with a second air inlet pipeline and a waste gas emission pipeline, a pipe valve is arranged on the waste gas emission pipeline, a partition plate is fixedly connected with the inner top of the shell, a gap is formed between the partition plate and the inner bottom of the shell, the partition plate divides the inside of the shell into a first heat exchange cavity and a second heat exchange cavity, a heat exchange copper pipe is fixedly connected with the inner walls of the first heat exchange cavity, the fixed intercommunication of water pump one end has first connecting pipe, the one end that the water pump was kept away from to first connecting pipe links to each other with the bottom of shell is fixed, and is linked together with the one end of heat transfer copper pipe, the other end fixed intercommunication of water pump has the second connecting pipe, the one end that the water pump was kept away from to the second connecting pipe links to each other with the bottom of shell is fixed, and is linked together with the other end of heat transfer copper pipe, be provided with the steam extraction mechanism who is linked together with the shell is inside on the shell, the fixed intercommunication in top of shell has the blast pipe, the fixed intercommunication in bottom of shell has the drain pipe, the one end that the shell was kept away from to the drain pipe.

Preferably, the steam extraction mechanism comprises an air extractor, a third connecting pipe is fixedly communicated with the throat part of the air extractor, the third connecting pipe is communicated with the first heat exchange cavity, a fourth connecting pipe is fixedly communicated with the tail end of the air extractor, the fourth connecting pipe is communicated with the second heat exchange cavity, a heat exchanger is arranged on the first connecting pipe, a heating pipe is fixedly connected to the heat exchanger, a heating water tank is fixedly connected to the side wall of the heat exchanger, the heating pipe is located inside the heating water tank, a steam pipe is fixedly communicated with the top of the heating water tank, and the steam pipe is communicated with the end part of the air extractor.

Preferably, the waste gas discharge pipeline, the second air inlet pipeline and the three-way pipe are fixedly connected through flanges.

Preferably, the equal fixedly connected with supporting leg in bottom of deoxidization water tank and shell, the bottom fixedly connected with mounting panel of supporting leg, the mounting hole has been seted up on the mounting panel.

Preferably, the first air inlet pipeline, the waste gas discharge pipeline, the second air inlet pipeline and the outer side wall of the three-way pipe are sequentially sleeved with a heat insulation layer and a silencing layer.

(III) advantageous effects

Compared with the prior art, the utility model provides a recycle device that oxygen-eliminating device exhaust steam discharged possesses following beneficial effect:

1. the recycling device for waste steam emission of the deaerator comprises a shell, high-temperature steam enters a deaerator tower head through a first air inlet pipeline, the steam heats demineralized water to enable the demineralized water to be in a saturated state, so that the space pressure above the liquid level of the demineralized water basically consists of steam pressure, gases except oxygen and oxygen in the demineralized water can escape from the water surface, the escaped gases and steam enter a shaft seal heater through a waste gas emission pipeline of the deaerator, the gases entering the shaft seal heater contact a heat exchange copper pipe, a cooling medium flows in the heat exchange copper pipe through a water pump, the steam in the gases meets the condition of condensation and is condensed into condensed water, the high-temperature steam subsequently entering the shaft seal heater is condensed and simultaneously heats the front generated condensed water, the heated condensed water flows into a condenser through a steam trap and a drain pipe, and the heat carried by the condensed water is reused by a boiler, the recovery and the utilization of the waste gas of the deaerator are realized.

2. The recycling device for waste steam emission of the deaerator comprises an air extractor, a cooling medium heated in a heat exchange copper pipe flows out of a shell, the heated cooling medium is cooled down again through a heat exchanger for recycling, heat exchanged by the heat exchanger heats water in a heating water tank to generate steam, the steam enters a convergent nozzle of the air extractor through a steam pipe, the steam flow speed is increased, the pressure is reduced, a negative pressure area is formed in the throat area of the nozzle and is communicated with a first heat exchange cavity to form a certain negative pressure, waste gas and shaft seal air leakage in the deaerator enter the first heat exchange cavity under the suction of the negative pressure, a small part of gas except uncondensed steam and oxygen in the first heat exchange cavity is sucked into the negative pressure area in the throat area of the nozzle, mixed gas is formed with the steam in the heating water tank and enters a second heat exchange cavity, and all the steam in the second heat exchange cavity is basically cooled and condensed into water, gases other than oxygen that cannot condense are exhausted to the atmosphere through an exhaust pipe.

Drawings

Fig. 1 is the utility model provides a recycle device's that oxygen-eliminating device exhaust steam discharged structural schematic diagram.

In the figure: the device comprises a deoxygenation water tank 1, a water outlet pipeline 2, a support leg 3, a first air inlet pipeline 4, a deoxygenation tower head 5, a water inlet pipeline 6, a pipe valve 7, an exhaust gas discharge pipeline 8, a second air inlet pipeline 9, a tee pipe 10, a steam pipe 11, a shell 12, a heat exchange copper pipe 13, an air extractor 14, a partition plate 15, an exhaust pipe 16, a condenser 17, a drain pipe 18, a steam trap 19, a second connecting pipe 20, a water pump 21, a heat exchanger 22, a heating pipe 23 and a heating water tank 24.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-1, a recycling device for waste gas discharged from a deaerator comprises a deaerating water tank 1 and a housing 12, wherein a deaerating tower head 5 is fixedly communicated with the center of the top of the deaerating water tank 1, a first air inlet pipeline 4 and an air inlet pipeline 6 are fixedly communicated with the side wall of the deaerating tower head 5, a water outlet pipeline 2 is fixedly communicated with the bottom of the deaerating water tank 1, a three-way pipe 10 is fixedly communicated with one side of the housing 12, a second air inlet pipeline 9 and a waste gas discharge pipeline 8 are respectively and fixedly communicated with two ends of the three-way pipe 10 far away from the housing 12, the second air inlet pipeline 9 is communicated with a shaft seal of a steam turbine for collecting leakage gas, a pipe valve 7 is arranged on the waste gas discharge pipeline 8, a partition plate 15 is fixedly connected with the top of the housing 12, a gap is arranged between the partition plate 15 and the bottom of the housing 12, the partition plate 15, the common fixedly connected with heat transfer copper pipe 13 of inner wall in first heat transfer chamber and second heat transfer chamber, the below of shell 12 is provided with water pump 21, the fixed intercommunication of water pump 21 one end has first connecting pipe, the one end that water pump 21 was kept away from to first connecting pipe is fixed continuous with the bottom of shell 12, and be linked together with the one end of heat transfer copper pipe 13, the fixed intercommunication of the other end of water pump 21 has second connecting pipe 20, the one end that water pump 21 was kept away from to second connecting pipe 20 is fixed continuous with the bottom of shell 12, and be linked together with the other end of heat transfer copper pipe 13, be provided with the steam extraction mechanism who is linked together with shell 12 inside on the shell 12, the fixed intercommunication in top of shell 12 has blast pipe 16, the fixed intercommunication in bottom of shell 12 has drain pipe 18, the fixed intercommunication of the one end that shell 12 was kept away.

The steam extraction mechanism comprises an air extractor 14, a third connecting pipe is fixedly communicated with the throat part of the air extractor 14, the third connecting pipe is communicated with a first heat exchange cavity, a fourth connecting pipe is fixedly communicated with the tail end of the air extractor 14, the fourth connecting pipe is communicated with a second heat exchange cavity, a heat exchanger 22 is arranged on the first connecting pipe, a heating pipe 23 is fixedly connected onto the heat exchanger 22, a heating water tank 24 is fixedly connected onto the side wall of the heat exchanger 22, the heating pipe 23 is located inside the heating water tank 24, a steam pipe 11 is fixedly communicated with the top of the heating water tank 24, the steam pipe 11 is communicated with the end part of the air extractor 14, and micro negative pressure is kept inside the shaft seal 12, so that steam is.

The waste gas discharge pipeline 8, the second air inlet pipeline 9 and the three-way pipe 10 are fixedly connected through flanges.

The equal fixedly connected with supporting leg 3 in bottom of deoxidization water tank 1 and shell 12, the mounting hole has been seted up to the bottom fixedly connected with mounting panel of supporting leg 3 on the mounting panel, is provided with rag bolt in the mounting hole, and is fixed with ground through rag bolt, makes the more firm that deoxidization water tank 1 and shell 12 placed.

First admission line 4, exhaust emission pipeline 8, second admission line 9 and the lateral wall of three-way pipe 10 have cup jointed insulating layer and amortization layer in proper order, prevent that the pipeline from being scalded the people by the high temperature gas heating, include the pipeline through the amortization layer simultaneously, reduce the outside transmission of the noise that produces behind the gaseous high-speed flow pipeline.

In conclusion, in the recycling device for waste steam discharged by the deaerator, high-temperature steam enters the deaerator tower head 5 through the first air inlet pipeline 4, the steam heats demineralized water to enable the demineralized water to be in a saturated state, so that the space pressure above the liquid level of the demineralized water is basically composed of steam pressure, gases except oxygen and oxygen in the demineralized water can escape from the water surface, the escaped gases and steam enter the shaft seal heater through the waste gas discharge pipeline 8 of the deaerator, the gases entering the shaft seal heater contact the heat exchange copper pipe 13, a cooling medium flows in the heat exchange copper pipe 13 through the water pump 21, the steam in the gases meets the condensation to form condensed water, the heated cooling medium in the heat exchange copper pipe 13 flows out of the shell 12, the heated cooling medium is cooled down again through the heat exchanger 22 for recycling, the heat exchanged by the heat exchanger 22 heats the water in the heating water tank 24, the steam is enabled to generate steam, the steam enters a convergent nozzle of an air extractor 14 through a steam pipe 11, the flow rate of the steam is increased, the pressure is reduced, a negative pressure area is formed in the throat area of the nozzle, the area is communicated with a first heat exchange cavity to form certain negative pressure, waste gas and shaft seal air leakage in the deaerator enter the first heat exchange cavity under the suction of the negative pressure, a small part of gas except uncondensed steam and oxygen in the first heat exchange cavity is sucked into the negative pressure area in the throat area of the nozzle, mixed gas is formed with the steam in a heating water tank 24 and enters a second heat exchange cavity, all the steam in the second heat exchange cavity is basically cooled and condensed into water, gas except uncondensed oxygen is discharged to the atmosphere through an exhaust pipe 16, high-temperature steam subsequently entering a shaft seal heater is condensed and simultaneously heats the previously generated condensed water, the heated condensed water flows into a condenser 17 through a steam trap 19 and a drain pipe 18, the heat carried by the condensed water and the condensed water is reused by the boiler, and the waste gas of the deaerator is recycled.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a recycle device that oxygen-eliminating device exhaust steam discharged, includes deoxidization water tank (1) and shell (12), its characterized in that, the fixed intercommunication of top center department of deoxidization water tank (1) has deoxidization tower head (5), the fixed intercommunication of lateral wall of deoxidization tower head (5) has first admission line (4) and inlet channel (6), the fixed intercommunication of bottom of deoxidization water tank (1) has outlet conduit (2), the fixed intercommunication of one side of shell (12) has three-way pipe (10), the both ends that shell (12) were kept away from in three-way pipe (10) are fixed the intercommunication respectively and are had second admission line (9) and exhaust emission pipeline (8), be provided with pipe valve (7) on exhaust emission pipeline (8), the interior top fixedly connected with baffle (15) of shell (12), be provided with the space between the interior bottom of baffle (15) and shell (12), the heat exchanger is characterized in that the inside of the shell (12) is divided into a first heat exchange cavity and a second heat exchange cavity by the partition plate (15), the inner walls of the first heat exchange cavity and the second heat exchange cavity are fixedly connected with a heat exchange copper pipe (13) together, a water pump (21) is arranged below the shell (12), one end of the water pump (21) is fixedly communicated with a first connecting pipe, one end of the first connecting pipe, far away from the water pump (21), is fixedly connected with the bottom of the shell (12) and is communicated with one end of the heat exchange copper pipe (13), the other end of the water pump (21) is fixedly communicated with a second connecting pipe (20), one end of the second connecting pipe (20), far away from the water pump (21), is fixedly connected with the bottom of the shell (12) and is communicated with the other end of the heat exchange copper pipe (13), a steam extraction mechanism communicated with the inside of the shell (12) is arranged on the shell (12), and an exhaust pipe (, the bottom of the shell (12) is fixedly communicated with a drain pipe (18), one end, far away from the shell (12), of the drain pipe (18) is fixedly communicated with a condenser (17), and a steam trap (19) is arranged on the drain pipe (18).

2. The recycling device for the exhaust gas discharged by the deaerator as claimed in claim 1, wherein: the steam extraction mechanism comprises an air extractor (14), a third connecting pipe is fixedly communicated with the throat part of the air extractor (14), the third connecting pipe is communicated with a first heat exchange cavity, a fourth connecting pipe is fixedly communicated with the tail end of the air extractor (14), the fourth connecting pipe is communicated with a second heat exchange cavity, a heat exchanger (22) is arranged on the first connecting pipe, a heating pipe (23) is fixedly connected onto the heat exchanger (22), a heating water tank (24) is fixedly connected onto the side wall of the heat exchanger (22), the heating pipe (23) is located inside the heating water tank (24), a steam pipe (11) is fixedly communicated with the top of the heating water tank (24), and the steam pipe (11) is communicated with the end part of the air extractor (14).

3. The recycling device for the exhaust gas discharged by the deaerator as claimed in claim 1, wherein: the waste gas discharge pipeline (8), the second gas inlet pipeline (9) and the three-way pipe (10) are fixedly connected through flanges.

4. The recycling device for the exhaust gas discharged by the deaerator as claimed in claim 1, wherein: the equal fixedly connected with supporting leg (3) in bottom of deoxidization water tank (1) and shell (12), the bottom fixedly connected with mounting panel of supporting leg (3), the mounting hole has been seted up on the mounting panel.

5. The recycling device for the exhaust gas discharged by the deaerator as claimed in claim 1, wherein: and the first air inlet pipeline (4), the waste gas discharge pipeline (8), the second air inlet pipeline (9) and the outer side wall of the three-way pipe (10) are sequentially sleeved with a heat insulation layer and a silencing layer.