Automatic detection exhaust recycling system for fan room

Abstract

The utility model discloses an automatic detection exhaust recycling system for a fan room, and belongs to the technical field of flue gas acid making environment protection. Comprising pipes and a main gas collecting pipe, the main gas collecting pipe is connected with a plurality of pipes which are connected in parallel, and the pipes are communicated with the main gas collecting pipe through valves. And the end part of the main gas collecting pipe is communicated and connected with an air supplementing pipeline in a flue gas acid making system or a gas supplementing pipeline at the front end of a drying tower. The sulfur dioxide gas leaked from the inside of the fan room is collected through the hose, the sulfur dioxide gas is prevented from being directly discharged into the air outside the fan room by the exhaust fan, the pollution to the environment is reduced, meanwhile, the collected sulfur dioxide gas is reused, and the yield of sulfuric acid is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of environmental protection for sulfuric acid production from flue gas, and particularly relates to an automatic detection, exhaust and reuse system for a fan room. Background Art

[0002] In a sulfuric acid production device from flue gas, a Roots blower is required to boost the pressure of the flue gas, and at the same time, a make-up air regulating valve is used to control the sulfur dioxide gas concentration in the air of the system to about 8%. Since the blower boosts the pressure by nearly 40 kPa, certain requirements are imposed on the sealing end of the blower.

[0003] Currently, common sealing forms include mechanical seals, gas source seals, labyrinth seals, etc. Although they can have a certain degree of sealing, there is still a possibility of air leakage.

[0004] Once the sealing form leaks, the sulfur dioxide gas in the fan room needs to be exhausted by starting an emergency exhaust, and is directly discharged into the air outside the fan room, which has an impact on the surrounding environment. At the same time, since the exhaust fan replaces the air in the overall environment, the accumulation of sulfur dioxide gas at the accident location is relatively large, and the flue gas at this location is not easily dispersed. There will also be no air flow surging in local corners inside the fan room, forming an accumulation nearby. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is: overcoming the deficiencies of the prior art, providing an automatic detection, exhaust and reuse system for a fan room. The utility model collects the leaked sulfur dioxide gas inside the fan room through a hose, avoids the exhaust fan from directly discharging the sulfur dioxide gas into the air outside the fan room, reduces environmental pollution, and at the same time reuses the collected sulfur dioxide gas to increase the sulfuric acid production.

[0006] The technical solution adopted by the utility model to solve the existing problems is:

[0007] An automatic detection, exhaust and reuse system for a fan room, including a pipe and a main collecting pipe. A plurality of pipes connected in parallel with each other are connected to the main collecting pipe, and the pipes are connected to the main collecting pipe through valves in a through manner.

[0008] Preferably, the end of the main collecting pipe is connected to the air make-up pipeline in the sulfuric acid production system from flue gas or the make-up pipeline at the front end of the drying tower in a through manner.

[0009] Preferably, the pipes adopt corrugated pipes or spiral pipes.

[0010] Preferably, the pipes adopt spiral pipes, and the pipes are wound around telescopic rods.

[0011] Preferably, an adsorption pipe is connected to the air inlet end of the pipe in a through manner.

[0012] Preferably, the inlet end of the adsorption tube is a duckbill or a conical opening.

[0013] Preferably, a gas collecting device is connected through the pipe and the adsorption tube, and the gas collecting device plays a role in expanding the adsorption tube.

[0014] Preferably, the gas collecting device is a hollow sphere.

[0015] Preferably, the degree of the included angle between the axis of the adsorption tube and the axis of the vertically arranged telescopic rod is 15° - 70°.

[0016] Preferably, a horizontally arranged toothed ring is sleeved outside the gas collecting device, the toothed ring is meshed and connected with the gear on the output shaft of the motor, and the motor is fixedly connected with the telescopic rod.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] (1) The sulfur dioxide gas leaked inside the fan room is collected through the hose, preventing the exhaust fan from directly discharging the sulfur dioxide gas into the air outside the fan room and reducing environmental pollution.

[0019] (2) The end of the main gas collecting pipe is connected through the air supply pipeline in the sulfuric acid production system from flue gas or the air supply pipeline at the front end of the drying tower, enabling the leaked sulfur dioxide gas to directly return to the process system and continue to participate in the sulfuric acid production process from flue gas. At the same time, additional equipment such as air extractors and storage tanks can be reduced, costs can be lowered, efficiency can be improved, and sulfuric acid production can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0021] Figure 1 It is a structure diagram of the automatic detection and exhaust gas recycling system in the fan room of the present utility model,

[0022] Figure 2 is Figure 1 a side view of

[0023] Figure 3 It is a structure diagram of a single pipeline in the automatic detection and exhaust gas recycling system in the fan room of the present utility model,

[0024] Figure 4 is a structure diagram of the adsorption end in a single pipeline,

[0025] Figure 5 It is a structure diagram of the coupling sleeve in the automatic detection and exhaust gas recycling system in the fan room of the present utility model,

[0026] Figure 6 is Figure 5 a cross-sectional view of

[0027] In the figure: 1 - pipe, 2 - valve, 3 - first connecting pipe, 4 - telescopic rod, 5 - support plate, 6 - gas collecting device, 7 - adsorption pipe, 8 - second connecting pipe, 801 - snap ring, 9 - gear ring, 10 - motor, 11 - gear, 12 - main collecting pipe, 13 - coupling sleeve, 1301 - pipe body, 1302 - insertion hole, 1303 - connecting pipe. Detailed implementation mode

[0028] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but use the difference in functions of components as the criterion for distinction. As mentioned throughout the specification and claims, "comprising" is an open-ended term and should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problems within a certain error range and basically achieve the technical effects.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0030] In the present invention, unless otherwise clearly specified and defined, terms such as "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The attached drawing is the best embodiment of the automatic detection and exhaust air recycling system for the fan room. The present utility model will be further described in detail below with reference to the attached drawing.

[0032] The automatic detection and exhaust air recycling system for the fan room includes a pipe 1 and a main collecting pipe 12. A plurality of pipes 1 connected in parallel with each other are connected to the main collecting pipe 12, and the pipe 1 and the main collecting pipe 12 are connected through a valve 2 in a through manner. In order to improve the connection strength, the valve 2 is connected to the main collecting pipe 12 in a through manner through a rigid first connecting pipe 3.

[0033] The main collecting pipe 12 is hoisted onto the roof of the fan room through a pipe rack. Multiple main collecting pipes 12 can be installed in each fan room. An air extraction device is connected to the outlet of the main collecting pipe 12. The air extraction device generates negative pressure, facilitating the extraction of sulfur dioxide gas at its corresponding position by pipe 1.

[0034] Sulfur dioxide leakage at the pump coupling is relatively serious. Therefore, a coupling sleeve 13 is sleeved at the coupling. The coupling sleeve 13 includes a vertical pipe body 1301. The pipe body 1301 is radially provided with a penetrating insertion hole 1302. A connecting pipe 1303 is connected to the upper part of the pipe body 1301 in a through manner. The connecting pipe 1303 is connected to pipe 1 in a through manner. The pump coupling passes through the insertion hole 1302, so that the pipe body 1301 is sleeved on the pump coupling to directly adsorb the leaked sulfur dioxide. The aperture of the insertion hole 1302 is larger than the outer diameter of the coupling, so that air can pass through the middle gap, driving the sulfur dioxide to be collected together.

[0035] The sulfur dioxide gas is pumped into the main collecting pipe 12 and then discharged into a storage tank, or directly discharged into the sulfuric acid production system of the flue gas to continue participating in the technological process of sulfuric acid production from flue gas.

[0036] In this embodiment, the end of the main collecting pipe 12 is connected to the air supply pipeline in the sulfuric acid production system of the flue gas or the supply pipeline at the front end of the drying tower in a through manner. The air supply pipeline or the supply pipeline at the front end of the drying tower is equivalent to an air extraction device, providing negative pressure. This arrangement can directly return the leaked sulfur dioxide gas to the process system to continue participating in the technological process of sulfuric acid production from flue gas. At the same time, it can also reduce additional equipment such as air extractors and storage tanks, reduce costs and improve efficiency.

[0037] An electric control three-way valve is connected to the end of the main collecting tank 12. The two outlets of the electric control three-way valve are respectively connected to the air supply pipeline and the supply pipeline at the front end of the drying tower through branch pipes in a through manner.

[0038] Pipe 1 can be a flexible pipe or a rigid straight pipe. However, the adsorption area of the rigid pipe is limited. Therefore, a flexible pipe is used in this embodiment. In order for pipe 1 to be stretched to adjust the height or position, pipe 1 is a corrugated pipe or a spiral pipe.

[0039] The position of pipe 1 can be manually adjusted to recover the gas inside the fan room. Since sulfur dioxide gas is harmful to the human body, in order to reduce the operation risk, a solution for automatic recovery of sulfur dioxide gas is also provided in this embodiment. The specific solution is as follows:

[0040] The valve 2 is an electrically controlled valve. The pipe 1 is a spiral pipe, and the pipe 1 is wound around the telescopic rod 4. The telescopic rod 4 is an electric telescopic rod. The air inlet end of the pipe 1 is connected through to an adsorption pipe 7. The inlet end of the adsorption pipe 7 is a duckbill or conical opening, which is convenient for collecting gas.

[0041] A gas collecting device 6 is connected through to between the pipe 1 and the adsorption pipe 7. The gas collecting device 6 plays a role in expanding the adsorption pipe 7. The gas collecting device 6 is a hollow sphere.

[0042] If the adsorption direction of the adsorption pipe 7 cannot be adjusted, the adsorption efficiency will also be greatly reduced. In order to realize the direction adjustment function of the adsorption pipe 7, thereby increasing the adsorption area and improving the adsorption efficiency, the degree of the angle between the axis of the adsorption pipe 7 and the axis of the vertically arranged telescopic rod 4 is 15°-70°.

[0043] A horizontally arranged gear ring 9 is sleeved outside the gas collecting device 6. The gear ring 9 is meshed and connected with a gear 11 on the output shaft of the motor 10. The motor 10 is fixedly connected with the telescopic rod 4.

[0044] When the motor 10 is started, the gas collecting device 6 is driven to rotate through the gear 11 and the gear ring 9, thereby driving the adsorption pipe 7 to rotate, changing its adsorption direction, thereby expanding the adsorption area and improving the adsorption efficiency.

[0045] In order to cooperate with the rotation of the gas collecting device 6, in this embodiment, a second connecting pipe 8 with an axis vertically arranged along the center of the gas collecting device 6 is connected through to above the gas collecting device 6. The second connecting pipe 8 is connected to the end of the pipe 1. Since the pipe 1 is a flexible pipe and the rotation angle of the gas collecting device 6 can be controlled to be less than 360°, the pipe 1 will not interfere with the rotating second connecting pipe 8. If it is feared that the rotation between the two will be affected, a rotating joint can be added between the pipe 1 and the second connecting pipe 8.

[0046] At the same time, a support plate 5 is fixedly connected to the lower end of the telescopic rod 4. The gas collecting device 6 and the motor 10 are both located below the support plate 5, and the motor 10 is fixedly connected with the support plate 5. The support plate 5 is provided with a through hole. The second connecting pipe 8 passes through the through hole. Two clamping rings 801 are sleeved outside the second connecting pipe 8 and are arranged at intervals up and down. The two clamping rings 801 are respectively located on the upper and lower sides of the support plate 5 and are in mutual contact. The gas collecting device 6 is hung on the support plate 5 through the clamping rings 801.

[0047] During the use process, sulfur dioxide gas sensors can be installed in various areas inside the fan room. The sensors are mainly installed at corresponding positions of each adsorption pipe 7. In this way, when individual sulfur dioxide gas sensors detect sulfur dioxide, the corresponding valve 2 and the motor 10 of the adsorption pipe 7 at the corresponding position are successively opened, and the adsorption pipe 7 collects the sulfur dioxide in the corresponding area.

[0048] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present utility model within the scope of knowledge possessed by those of ordinary skill in the relevant art.

Claims

1. The automatic detection and exhaust gas reuse system for the fan room is characterized in that: It includes a pipe (1) and a main collecting pipe (12). A number of pipes (1) connected in parallel with each other are connected to the main collecting pipe (12). The pipe (1) and the main collecting pipe (12) are connected through a valve (2) in a through manner.

2. The automatic detection and exhaust gas reuse system for the fan room according to claim 1, characterized in that: The end of the main collecting pipe (12) is connected in a through manner to the air supply pipeline in the sulfuric acid production system by flue gas or the supply pipeline at the front end of the drying tower.

3. The automatic detection and exhaust gas reuse system for the fan room according to claim 1 or 2, characterized in that: The pipe (1) is made of a corrugated pipe or a spiral pipe.

4. The automatic detection and exhaust gas reuse system for the fan room according to claim 3, characterized in that: The pipe (1) is made of a spiral pipe, and the pipe (1) is wound around a telescopic rod (4).

5. The automatic detection and exhaust gas reuse system for the fan room according to claim 4, characterized in that: An adsorption pipe (7) is connected in a through manner to the air inlet end of the pipe (1).

6. The automatic detection and exhaust gas reuse system for the fan room according to claim 5, characterized in that: The inlet end of the adsorption pipe (7) is a duckbill opening or a conical opening.

7. The automatic detection and exhaust gas reuse system for the fan room according to claim 5 or 6, characterized in that: A gas collecting device (6) is connected in a through manner between the pipe (1) and the adsorption pipe (7), and the gas collecting device (6) plays a role in expanding the adsorption pipe (7).

8. The automatic detection and exhaust gas reuse system for the fan room according to claim 7, characterized in that: The gas collecting device (6) is a hollow sphere.

9. The automatic detection and exhaust gas reuse system for the fan room according to claim 8, characterized in that: The degree of the included angle between the axis of the adsorption pipe (7) and the axis of the vertically arranged telescopic rod (4) is 15° - 70°.

10. The automatic detection and exhaust gas reuse system for the fan room according to claim 9, characterized in that: A horizontally arranged gear ring (9) is sleeved outside the gas collecting device (6), and the gear ring (9) is meshed and connected with a gear (11) on the output shaft of a motor (10), and the motor (10) is fixedly connected with the telescopic rod (4).

Images