CN216897258U

CN216897258U - Novel modular sewage draining system for sulfuric acid waste heat boiler

Info

Publication number: CN216897258U
Application number: CN202220509696.0U
Authority: CN
Inventors: 何衍玉; 杨毅; 陈亮
Original assignee: Yunnan Design Institute Of Chemical Engineering Co ltd
Current assignee: Yunnan Design Institute Of Chemical Engineering Co ltd
Priority date: 2022-03-08
Filing date: 2022-03-08
Publication date: 2022-07-05
Anticipated expiration: 2032-03-08

Abstract

The utility model discloses a novel modular blowdown system for a sulfuric acid waste heat boiler, which comprises a continuous blowdown flash tank, a periodic blowdown flash tank and a blowdown cooling tank, wherein two sides of the continuous blowdown flash tank are respectively connected with a liquid level meter and a sewage discharge control valve through pipelines, the liquid level meter and the sewage discharge control valve are in interlocking control, the continuous blowdown flash tank and the periodic blowdown flash tank are communicated through a pipeline where the sewage discharge control valve is located, the bottom end of the continuous blowdown flash tank is also connected with a through pipe, a manual valve is installed on the through pipe, and the bottom pipeline of the periodic blowdown flash tank is communicated with the end part of the through pipe; compared with the original sewage discharge system, the system reduces the occupied area and improves the economic benefit of enterprises; facilities such as pipelines, valves, sewage pools and the like are reduced, and the attractiveness of the device is improved; the modularized engineering application can be realized, the device runs fully automatically, and the modernized management mode is convenient to realize.

Description

Novel modular sewage draining system for sulfuric acid waste heat boiler

Technical Field

The utility model belongs to the technical field of waste heat boiler blow-down systems of sulfur acid making devices, and particularly relates to a novel modular blow-down system for a sulfuric acid waste heat boiler.

Background

At present, all sulfur acid-making devices at home and abroad are provided with a waste heat utilization system for recovering waste heat in the chemical production process, and in order to ensure the safety and the reliability of the waste heat utilization system, a waste heat boiler is generally provided with a continuous blowdown system and a periodic blowdown system.

Waste heat boiler's blow off water often has high temperature high pressure and has characteristics such as certain pollution, can not directly arrange it to the environment, and two kinds of blowdown systems of the supporting waste heat boiler of sour device of present sulphur system set up independently, and large-scale sour project of sulphur system often need set up facilities such as two sets of blowdown cooling ponds, cause the pipeline valve more, and it is also more to run out to spill the dew point, is not convenient for enterprise's management to certain waste of land area has been caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel modular sewage system for a sulfuric acid waste heat boiler, and aims to solve the problems of large occupied space, inconvenience in inertia force and complex integral connection structure of the continuous sewage and periodic distributed sewage discharging mode of the conventional waste heat boiler in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a novel modularization blowdown system for sulphuric acid exhaust-heat boiler, includes continuous blowdown flash tank, periodic blowdown flash tank and blowdown cooling tank, the both sides of continuous blowdown flash tank are connected with level gauge and sewage discharge control valve respectively through the pipeline, the level gauge is interlock control with the sewage discharge control valve, and wherein the pipeline that sewage discharge control valve located will continuous blowdown flash tank with periodic blowdown flash tank intercommunication, the bottom of continuous blowdown flash tank still is connected with the siphunculus, install manual valve on the siphunculus, periodic blowdown flash tank bottom pipeline is linked together with the tip of siphunculus to be connected with female pipe jointly, the blowdown end of female pipe is placed in the inside of blowdown cooling tank.

Preferably, the top of continuous blowdown flash tank is provided with continuous blowdown flash steam exhaust pipe and continuous blowdown flash tank relief valve steam exhaust pipe, and still is provided with the relief valve on continuous blowdown flash tank relief valve steam exhaust pipe, the side of continuous blowdown flash tank is provided with exhaust-heat boiler continuous blowdown water inlet.

Preferably, the top of periodic blowdown flash tank is installed with periodic blowdown flash steam exhaust pipe of flash tank, a plurality of boiler drainage imports have been seted up to the side of periodic blowdown flash tank.

Preferably, one of the boiler water drainage inlets is communicated with emergency sewage of the waste heat boiler through a pipeline, a water drainage discharge control valve is arranged on the pipeline, the other boiler water drainage inlet is connected with a periodic sewage drainage pipeline, and a valve is arranged on the periodic sewage drainage pipeline.

Preferably, the supporting plate is fixed at the top of the inner wall of the sewage discharging and cooling pool, the air cylinder is installed at the top of the supporting plate, the cleaning plate is further placed inside the sewage discharging and cooling pool, and the output end of the air cylinder is fixedly connected with the top of the cleaning plate.

Preferably, the top of clearance board has evenly seted up the hole of permeating water, the both ends of clearance board are upwards buckled and are formed with the swash plate, and this swash plate and the seamless laminating of blowdown cooling pond's inner wall.

Compared with the prior art, the utility model has the beneficial effects that:

1. compared with the original sewage discharge system, the floor area is reduced, and the economic benefit of an enterprise is improved; facilities such as pipelines, valves, sewage disposal pools and the like are reduced, and the attractiveness of the device is improved; the modularized engineering application can be realized, the device runs fully automatically, and the modernized management mode is convenient to realize; the structure is simple, the construction is convenient, economic and practical, and the durability is good;

2. through the clearance board and the cylinder of design, can take out the clearance fast to the inside remaining impurity in blowdown cooling pond, effectively improve cleaning efficiency.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the desuperheating pond of the present invention;

FIG. 3 is a schematic end view of a cleaning plate of the present invention.

In the figure: 1. a continuous blowdown flash tank; 2. a periodic blowdown flash tank; 3. a sewage disposal cooling pond; 4. a liquid level meter; 5. a sewage discharge control valve; 6. a drain discharge control valve; 7. pipe passing; 8. a main pipe; 9. a safety valve; 10. a flash evaporation steam exhaust pipe of the continuous blowdown flash tank; 11. a flash evaporation steam exhaust pipe of the periodic blowdown flash tank; 12. a safety valve steam exhaust pipe of the continuous blowdown flash tank; 13. a periodic blowdown line; 14. a support plate; 15. a cylinder; 16. cleaning the plate; 17. a sloping plate; 18. and (6) water permeable holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: a novel modular blowdown system for a sulfuric acid waste heat boiler comprises a continuous blowdown flash tank 1, a periodic blowdown flash tank 2 and a blowdown cooling tank 3, wherein two sides of the continuous blowdown flash tank 1 are respectively connected with a liquid level meter 4 and a sewage discharge control valve 5 through pipelines, and the liquid level meter 4 and the sewage discharge control valve 5 are in interlocking control, so that the occupied area is reduced compared with the original blowdown system, and the economic benefit of an enterprise is improved; facilities such as pipelines, valves, sewage disposal pools and the like are reduced, and the attractiveness of the device is improved; the modularized engineering application can be realized, the device runs fully automatically, and the modernized management mode is convenient to realize; simple structure, construction convenience, economical and practical, durable, wherein the pipeline that sewage discharge control valve 5 located communicates continuous blowdown flash tank 1 and periodic blowdown flash tank 2, and the bottom of continuous blowdown flash tank 1 still is connected with siphunculus 7, installs manual valve on the siphunculus 7, and the 2 bottom pipelines of periodic blowdown flash tank are linked together with the tip of siphunculus 7 to be connected with female pipe 8 jointly, the inside in blowdown cooling tank 3 is arranged in to female pipe 8's blowdown end.

In this embodiment, preferably, a flash steam exhaust pipe 10 of the continuous blowdown flash tank and a safety valve steam exhaust pipe 12 of the continuous blowdown flash tank are arranged at the top of the continuous blowdown flash tank 1, a safety valve 9 is further arranged on the safety valve steam exhaust pipe 12 of the continuous blowdown flash tank, and a continuous blowdown water inlet of the waste heat boiler is arranged at a side of the continuous blowdown flash tank 1.

In this embodiment, preferably, the top of the periodic blowdown flash tank 2 is provided with a periodic blowdown flash exhaust pipe 11, and the side of the periodic blowdown flash tank 2 is provided with a plurality of boiler drain inlets.

In this embodiment, preferably, one of the boiler water drainage inlets is communicated with the emergency sewage of the exhaust-heat boiler through a pipeline, the pipeline is provided with a water drainage control valve 6 for opening and closing the pipeline, the other boiler water drainage inlet is connected with a periodic sewage discharge pipeline 13, and the periodic sewage discharge pipeline 13 is provided with a valve for opening and closing the periodic sewage discharge pipeline 13.

In this embodiment, preferred, 3 inner wall tops in blowdown cooling pond are fixed with backup pad 14, and cylinder 15 is installed at the top of backup pad 14, through the clearance board 16 and the cylinder 15 of design, can take out the clearance fast to the inside remaining impurity in blowdown cooling pond 3, effectively improves cleaning efficiency, has still placed clearance board 16 in the inside in blowdown cooling pond 3, the output of cylinder 15 and the top fixed connection of clearance board 16.

In this embodiment, it is preferred, the hole 18 of permeating water has evenly been seted up at the top of clearance plate 16, the both ends of clearance plate 16 are upwards buckled and are formed with swash plate 17, this swash plate 17 and the seamless laminating of the inner wall of blowdown cooling pond 3, in use, earlier the inside sewage discharge of blowdown cooling pond 3, start cylinder 15 afterwards, it rises to drive clearance plate 16 through cylinder 15, remaining sewage is through the hole 18 discharge of permeating water this moment, and impurity is taken out by clearance plate 16 together, meanwhile swash plate 17 strikes off the impurity of the adhesion of blowdown cooling pond 3 inner wall.

The working principle and the using process of the utility model are as follows: when the utility model is used, under the normal working condition: the drainage discharge control valve 6, the through pipe 7, the safety valve 9 and the regular sewage discharge pipeline 13 are all in a closed state under the control of valves, and are automatically opened or manually opened in an accident or emergency state, the opening conditions can be set according to different occasions or specific requirements of users, and the opening sequence is set according to priority levels or possible consequences; the sewage discharge control valve 5 and the liquid level meter 4 are controlled in an interlocking mode, when the liquid level of the liquid level meter 4 reaches a high liquid level, the control valve of the sewage discharge control valve 5 is automatically opened, and when the liquid level of the liquid level meter 4 reaches a low liquid level, the control valve of the sewage discharge control valve 5 is automatically closed; the through pipe 7 is a bypass pipe and a standby system of the liquid level meter 4, and when the system of the liquid level meter 4 breaks down or needs to be overhauled or the like, a valve of the through pipe 7 can be manually opened to manually discharge sewage; the main pipe 8 is a common main pipe for the continuous blowdown of the waste heat boiler and the periodical blowdown after expansion and cooling, enters the blowdown cooling pool of the blowdown cooling pool 3, and is safely discharged after natural cooling; in case of accident or other emergency: the control valve of the liquid level meter 4 is automatically opened for sewage discharge, and the control valve of the liquid level meter 4 is automatically closed when the normal working condition is recovered; the valve of the periodic sewage discharge pipeline 13 is opened periodically for sewage discharge, and the opening frequency can be set by a user; the utility model is a standard modular unit, and can reduce some elements in some occasions according to the user requirements or the special requirements of specific application, for example, a small sulfur acid-making device can be not matched with a periodic pollution discharge expansion tank 2; for example, in some cases, the drain control valve 6 may be combined with the continuous blowdown flash tank relief valve exhaust pipe 12, but the reduction of these units does not affect the function and use of the present modular system; it is worth noting that all the facilities related to the sewage disposal and cooling pond 3, such as equipment, pipelines, valves, meters and the like, can be products with domestic and foreign standards.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel modularization blowdown system for sulphuric acid exhaust-heat boiler, includes continuous blowdown flash tank (1), periodic blowdown flash tank (2) and blowdown cooling pond (3), its characterized in that: the both sides of continuous blowdown flash tank (1) are connected with level gauge (4) and sewage discharge control valve (5) respectively through the pipeline, level gauge (4) and sewage discharge control valve (5) are interlocking control, and wherein the pipeline that sewage discharge control valve (5) were located will continuous blowdown flash tank (1) with periodic blowdown flash tank (2) intercommunication, the bottom of continuous blowdown flash tank (1) still is connected with siphunculus (7), install manual valve on siphunculus (7), periodic blowdown flash tank (2) bottom pipeline is linked together with the tip of siphunculus (7) to be connected with female pipe (8) jointly, the inside of blowdown cooling tank (3) is arranged in to the blowdown end of female pipe (8).

2. The novel modular blowdown system for a sulfuric acid waste heat boiler as set forth in claim 1, wherein: the top of continuous blowdown flash tank (1) is provided with continuous blowdown flash steam exhaust pipe (10) and continuous blowdown flash tank relief valve steam exhaust pipe (12), and still is provided with relief valve (9) on continuous blowdown flash tank relief valve steam exhaust pipe (12), the side of continuous blowdown flash tank (1) is provided with exhaust-heat boiler and discharges sewage import in succession.

3. The novel modular blowdown system for a sulfuric acid waste heat boiler as set forth in claim 1, wherein: periodic blowdown flash evaporation exhaust pipe (11) are installed at the top of periodic blowdown flash tank (2), a plurality of boiler drainage imports have been seted up to the side of periodic blowdown flash tank (2).

4. The novel modular blowdown system for a sulfuric acid waste heat boiler as set forth in claim 3, wherein: one of the boiler water drainage inlets is communicated with emergency sewage of the waste heat boiler through a pipeline, a water drainage discharge control valve (6) is arranged on the pipeline, the other boiler water drainage inlet is connected with a periodic sewage discharge pipeline (13), and a valve is arranged on the periodic sewage discharge pipeline (13).

5. The novel modular blowdown system for a sulfuric acid waste heat boiler as set forth in claim 1, wherein: supporting plate (14) are fixed at the top of the inner wall of the sewage discharging and cooling pool (3), air cylinder (15) is installed at the top of the supporting plate (14), cleaning plate (16) is further placed inside the sewage discharging and cooling pool (3), and the output end of the air cylinder (15) is fixedly connected with the top of the cleaning plate (16).

6. The novel modular blowdown system for a sulfuric acid waste heat boiler as set forth in claim 5, wherein: the top of clearance board (16) has evenly seted up permeable hole (18), the both ends of clearance board (16) are upwards buckled and are formed with swash plate (17), and this swash plate (17) and the seamless laminating of the inner wall in blowdown cooling pond (3).