CN222919302U - Air pressure balance piece and fly ash treatment system - Google Patents

Abstract

The utility model discloses an air pressure balancing piece and a fly ash treatment system, wherein the air pressure balancing piece comprises an upper tank body, a lower tank body and a water pump, the lower tank body is provided with an air breathing interface, an exhaust interface, a liquid discharging interface and a backflow interface, the upper tank body is provided with a liquid inlet interface, a liquid outlet interface and an air pressure balancing interface, the exhaust interface is communicated with the atmosphere and is provided with a first valve, the liquid discharging interface is communicated with the liquid inlet interface through the water pump, the liquid outlet interface is communicated with the backflow interface and is provided with a second valve at a communicating position, the air pressure balancing interface is communicated with the atmosphere, the air pressure balancing interface is provided with a third valve, and the upper tank body and the lower tank body are both used for containing liquid, so that the air breathing interface is communicated with the inside of a container, and the third valve is opened, and after the air breathing interface is communicated with the container, the pressure in the container can be regulated after the pressure in the container has an ascending trend or a descending trend, so that the pressure in the container tends to be equivalent to the atmospheric pressure.

Description

Air pressure balance piece and fly ash treatment system

Technical Field

The utility model belongs to the technical field of fly ash detoxification treatment, and particularly relates to an air pressure balancing piece and a fly ash treatment system.

Background

Dioxin is one of the main toxic and harmful substances in waste incineration fly ash as a Persistent Organic Pollutant (POPs), and the waste incineration fly ash is subjected to innocent treatment or resource utilization, wherein the dioxin must be properly treated. And the fly ash is melted at high temperature or enters a cement kiln for cooperative treatment, and dioxin in the fly ash is thoroughly decomposed in a high-temperature environment. In addition, the method such as photocatalysis, hydrothermal treatment, low-temperature heat treatment and the like can effectively degrade dioxin in the fly ash. The low-temperature heat treatment process has the characteristics of low detoxification operation temperature, low secondary synthesis amount of dioxin, low energy consumption, convenient engineering application and the like, and is widely paid attention to and popularized and applied in recent years. However, the low-temperature detoxification process of the current fly ash dioxin needs to isolate air (anoxic or anaerobic environment), so the requirement on the sealing performance is high, and the investment cost of equipment is increased.

Disclosure of utility model

In order to solve the above technical problems, one of the purposes of the present utility model is to provide an air pressure balancing member which has a simple structure, is capable of stabilizing the air pressure in a container and ensuring good air tightness between the container and the outside.

In order to achieve the purpose, the air pressure balancing piece comprises an upper tank body, a lower tank body and a water pump, wherein the upper tank body is arranged above the lower tank body, an air breathing interface, an air exhaust interface, a liquid discharging interface and a backflow interface are arranged on the lower tank body, a liquid inlet interface, a liquid outlet interface and an air pressure balancing interface are arranged on the upper tank body, the air exhaust interface is communicated with the atmosphere and is provided with a first valve, the liquid discharging interface is communicated with the liquid inlet interface through the water pump, the liquid outlet interface is communicated with the backflow interface, a second valve is arranged at a communicating position, the air pressure balancing interface is communicated with the atmosphere, and a third valve is arranged at the air pressure balancing interface, and the upper tank body and the lower tank body are both used for containing liquid.

The technical scheme has the advantages that the gas breathing interface is communicated with the inside of the container, the third valve is opened, when the pressure in the container tends to rise, the liquid in the lower tank body can be pumped into the container body by the water pump, so that more space is made in the lower tank body to store the gas overflowed from the container, the pressure in the container can be kept stable, when the pressure in the container tends to fall, the second valve can be opened, and the liquid in the upper tank body enters the lower tank body to squeeze the gas in the lower tank body into the container, so that the falling amount of the pressure in the container is compensated, and the pressure in the container tends to be stable.

The technical scheme includes that the exhaust gas filter comprises an air inlet and an air outlet, the exhaust interface is communicated with the air inlet of the exhaust gas filter, the first valve is arranged at the communication position of the air inlet and the air outlet of the exhaust gas filter, and the air outlet of the exhaust gas filter is provided with a fourth valve.

The technical scheme has the beneficial effects that through the arrangement of the waste gas filter, when the lower tank body is exhausted outwards through the exhaust interface, the waste gas filter can be used for purifying the gas exhausted from the lower tank body.

In the above technical scheme, the filter element in the exhaust gas filter is activated carbon.

The technical scheme has the beneficial effects that the deodorizing effect is good, and harmful components in the gas exhausted by the exhaust interface can be absorbed.

In the technical scheme, the upper tank body is arranged at the upper end of the lower tank body and is integrally formed.

The technical scheme has the beneficial effects that the whole air pressure balancing piece is simple in structure.

In the above technical scheme, the gas breathing interface and the exhaust interface are both arranged at the upper end of the lower tank body, and the liquid draining interface and the reflux interface are both positioned at the lower end of the lower tank body.

The technical scheme has the beneficial effects that liquid in the lower tank body can be prevented from forming liquid seals on the gas breathing interface and the exhaust interface, and the liquid discharge interface and the reflux interface are subjected to liquid seal treatment by the liquid in the lower tank body.

In the above technical scheme, the liquid inlet interface and the air pressure balance interface are arranged at the upper end of the upper tank body, and the liquid outlet interface is arranged at the lower end of the upper tank body.

The technical scheme has the beneficial effects that liquid in the upper tank body can be prevented from sealing the liquid inlet interface and the air pressure balance interface, and the liquid outlet interface is immersed below the liquid level so as to drain liquid by gravity.

In the technical scheme, the waste gas filter is arranged at the upper end of the upper tank body or the lower tank body.

The technical scheme has the beneficial effect that the structure is more compact.

The second object of the present utility model is to provide a fly ash treatment system which has a simple structure and in which the internal pressure is stable with respect to the atmospheric pressure when treating the fly ash.

In order to achieve the purpose, the fly ash treatment system comprises a fly ash treatment tank, a gas storage piece, a temperature regulating piece and the air pressure balancing piece, wherein a feed inlet, a protective gas inlet, an air pressure balancing port and a discharge port are arranged on the fly ash treatment tank, a feed valve is arranged at the feed inlet, a discharge valve is arranged at the discharge port, the gas storage piece is communicated with the protective gas inlet, an air inlet valve is arranged at the communication position, the air breathing interface is communicated with the air pressure balancing port, a regulating valve is arranged at the communication position, and the temperature regulating piece is arranged on the fly ash treatment tank and is used for regulating temperature of fly ash in the fly ash treatment tank.

The technical scheme has the beneficial effects that the fly ash treatment tank is used as a container, at the moment, the pressure change in the fly ash treatment tank is caused along with the filling quantity and the temperature change of the fly ash when the fly ash is treated, and in order to avoid the air tightness problem of the fly ash treatment tank caused by the pressure difference with the outside, the pressure in the fly ash treatment tank is subjected to pressure stabilizing treatment by arranging the air pressure balancing piece, and the air storage piece is used for filling protective gas into the fly ash treatment tank so as to ensure that the fly ash detoxification is performed under the atmosphere of the protective gas.

According to the technical scheme, the upper tank body and the lower tank body are both internally provided with liquid level monitoring elements, and the fly ash treatment tank is provided with pressure monitoring elements for monitoring the pressure intensity in the fly ash treatment tank.

The technical scheme has the beneficial effects that the liquid level conditions in the upper tank body and the lower tank body can be monitored by the corresponding liquid level detection elements respectively so as to judge whether the exhaust port is required to exhaust or whether the gas storage piece is required to add protective gas into the fly ash treatment tank.

The technical scheme is that the liquid level monitoring device further comprises a controller, the second valve is an electric valve, and the second valve, the water pump, the pressure monitoring element and the two liquid level monitoring elements are all electrically connected with the controller.

The technical scheme has the beneficial effects that the whole fly ash treatment system can automatically adjust the pressure in the fly ash treatment tank to keep a stable state with the outside.

Drawings

FIG. 1 is a cross-sectional view of a pneumatic balance member according to embodiment 1 of the present utility model;

FIG. 2 is a schematic diagram of a fly ash treatment system according to embodiment 2 of the present utility model;

Fig. 3 is a schematic diagram showing electrical connection of the controller in embodiment 2 of the present utility model.

1, An air pressure balancing piece; 11, an upper tank body, 111, a liquid inlet port, 112, a liquid outlet port, 113, a gas pressure balance port, 12, a lower tank body, 121, a gas breathing port, 122, an exhaust port, 123, a liquid outlet port, 124, a backflow port, 13, a water pump, 14, a first valve, 15, a second valve, 16, a third valve, 17, a waste gas filter, 18, a fourth valve, 19, a liquid level monitoring element, 2, a fly ash treatment tank, 21, a feed inlet, 22, a protective gas inlet, 23, a gas pressure balance port, 24, a discharge port, 25, a pressure monitoring element, 3, a gas storage part, 4, a temperature adjusting part, 5, a feed valve, 6, a discharge valve, 7, an air inlet valve, 8, a regulating valve and 9, and a controller.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model. The utility model is more particularly described by way of example in the following paragraphs with reference to the drawings. Advantages and features of the utility model will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.

Example 1

As shown in fig. 1, the present embodiment provides an air pressure balance member, which comprises an upper tank 11, a lower tank 12 and a water pump 13, wherein the upper tank 11 is arranged above the lower tank 12, a gas breathing interface 121, an exhaust interface 122, a liquid draining interface 123 and a backflow interface 124 are arranged on the lower tank 12, a liquid inlet 111, a liquid outlet 112 and an air pressure balance interface 113 are arranged on the upper tank 11, the exhaust interface 122 is communicated with the atmosphere and is provided with a first valve 14, the liquid draining interface 123 is communicated with the liquid inlet 111 through the water pump 13, the liquid outlet 112 is communicated with the backflow interface 124, and is provided with a second valve 15 at the communication position, the air pressure balance interface 113 is communicated with the atmosphere, and the air pressure balance interface 113 is provided with a third valve 16, and the upper tank 11 and the lower tank 12 are used for containing liquid at the moment.

The technical scheme includes that the waste gas filter 17 is further included, the waste gas filter 17 is provided with an air inlet and an air outlet, the air outlet 122 is communicated with the air inlet of the waste gas filter 17, the first valve 14 is arranged at the communication position of the air inlet and the air outlet of the waste gas filter 17 is provided with the fourth valve 18, and through the arrangement of the waste gas filter, when the lower tank body is exhausted outwards through the air outlet, the waste gas filter can be used for purifying the gas exhausted from the lower tank body, the filter element in the waste gas filter 17 is made of activated carbon, the deodorizing effect is good, and harmful components in the gas exhausted from the air outlet can be absorbed (the fourth valve and the first valve are simultaneously opened or simultaneously closed, and the fourth valve is mainly used for preventing external air from entering the waste gas filter to influence the service life of the waste gas filter).

In the above technical solution, the upper tank 11 is disposed at the upper end of the lower tank 12 and is integrally formed, so that the whole air pressure balancing member has a simple structure.

In the above technical solution, the gas breathing interface 121 and the air exhaust interface 122 are both disposed at the upper end of the lower tank 12 (the gas breathing interface 121 and the air exhaust interface 122 are always disposed above the liquid level in the lower tank 12), and the liquid discharge interface 123 and the air return interface 124 are both disposed at the lower end of the lower tank 12 (specifically, may be the lower end of the side wall, and the liquid discharge interface 123 and the air return interface 124 are always disposed below the liquid level in the lower tank 12), so that the liquid in the lower tank can be prevented from forming a liquid seal for the gas breathing interface and the air exhaust interface, and the liquid discharge interface and the air return interface are both liquid sealed by the liquid in the lower tank.

In the above technical solution, the liquid inlet port 111 and the air pressure balance port 113 are disposed at the upper end of the upper tank 11 (the liquid inlet port 111 and the air pressure balance port 113 are always located above the liquid level in the upper tank 11), and the liquid outlet port 112 is disposed at the lower end of the upper tank 11 (specifically, the lower end of the side wall may be located below the liquid level in the upper tank 11), so that liquid in the upper tank can be prevented from sealing the liquid inlet port and the air pressure balance port, and the liquid outlet port is submerged below the liquid level so as to drain by gravity.

In the above technical solution, the exhaust gas filter 17 is disposed at the upper end of the upper tank 11 or the lower tank 12, so that the structure thereof is more compact.

In this embodiment, the liquid in the upper tank and the lower tank may be water.

Example 2

As shown in fig. 2, the present embodiment provides a fly ash treatment system, which includes a fly ash treatment tank 2, a gas storage member 3, a temperature regulating member 4 and the air pressure balancing member 1 as described in embodiment 1, wherein a feed port 21, a protective gas inlet 22, an air pressure balancing port 23 and a discharge port 24 are provided on the fly ash treatment tank 2, a feed valve 5 is provided at the feed port 21, a discharge valve 6 is provided at the discharge port 24, the gas storage member 3 is communicated with the protective gas inlet 22, and an air intake valve 7 is provided at the communication position, the gas breathing port 121 is communicated with the air pressure balancing port 23, and an air regulating valve 8 is provided at the communication position, the temperature regulating member 4 is provided on the fly ash treatment tank 2, and is used for regulating the temperature of the fly ash in the fly ash treatment tank 2, at this time, the fly ash treatment tank is used as a container, and the fly ash in the treatment tank is changed with the change of the filling amount and temperature of the fly ash during the fly ash treatment, and in order to avoid the air tightness difference between the fly ash treatment tank and the outside, the air storage member is used for the air pressure-removing treatment of the air pressure of the protective gas under the pressure of the protective gas pressure balance member, and the air pressure of the air storage member is used for the air pressure-removing treatment is disposed in the air pressure balance treatment tank. In this embodiment, the gas stored in the gas storage member may be nitrogen.

In this embodiment, the lower end of the fly ash treatment tank may be in an inverted cone shape, and the discharge port 24 is disposed at the conical tip of the lower end of the fly ash treatment tank, and in this embodiment, the feed port 21, the shielding gas inlet 22 and the air pressure balance port 23 may be disposed at the upper end of the fly ash treatment tank.

In this embodiment, before the fly ash is added into the fly ash treatment tank, the air in the fly ash treatment tank and the air in the lower tank are blown out in advance to fill the air in the fly ash treatment tank and the air in the lower tank with nitrogen, and the fly ash detoxification is performed under the nitrogen atmosphere.

In the above technical solution, the upper tank 11 and the lower tank 12 are both provided with the liquid level monitoring element 19, the fly ash treatment tank 2 is provided with the pressure monitoring element 25 for monitoring the pressure in the fly ash treatment tank 2, so that the liquid level conditions in the upper tank and the lower tank can be monitored by the corresponding liquid level monitoring elements, for example, the upper tank monitors the liquid level in the upper tank by the corresponding liquid level monitoring elements to avoid that the liquid level in the upper tank rises to a height exceeding the height of the liquid inlet port 111 and the air pressure balance port 113 or falls to a height lower than the liquid outlet port, and the lower tank is similar, which is not repeated herein, and in particular, the liquid level fluctuation conditions in the upper tank and the lower tank have the liquid level upper limit value and the liquid level lower limit value, and the liquid level in the upper tank can only fluctuate between the liquid level upper limit value and the liquid level lower limit value.

In this embodiment, the liquid level detecting element may be a liquid level sensor, and the liquid level sensor is disposed on inner bottom walls of the upper tank and the lower tank, and the pressure detecting element may be a pressure sensor for monitoring a pressure change condition (an ascending trend or a descending trend relative to an atmospheric pressure) in the fly ash processing tank.

The temperature adjusting piece can be a heat exchange coil which is spirally arranged in the fly ash treatment tank, both ends of the temperature adjusting piece penetrate out of the fly ash treatment tank (both ends of the temperature adjusting piece are respectively a liquid inlet end and a liquid outlet end), the fly ash is heated by introducing heat conducting liquid with higher temperature into the temperature adjusting piece, and the fly ash is cooled by introducing cooling liquid with lower temperature into the temperature adjusting piece.

As shown in fig. 3, the above technical solution further includes a controller 9, where the second valve 15 is an electric valve, and the second valve 15, the water pump 13, the pressure monitoring element 25, and the two liquid level monitoring elements 19 are all electrically connected with the controller 9, so that the whole fly ash processing system can automatically adjust the pressure in the fly ash processing tank to keep stable with the outside, and in this embodiment, the controller may use a PLC controller.

The first valve 14, the third valve 16, the fourth valve 18, the adjusting valve and the air inlet valve may be manual valves.

The fly ash treatment system of the embodiment has the operation principle that when the fly ash treatment system is in operation, the regulating valve 8 and the third valve 16 are opened (in a normally open state), when the pressure monitoring element monitors that the pressure in the fly ash treatment tank is increased, the controller controls the water pump 13 to start, the liquid in the lower tank body is pumped into the upper tank body by the water pump, at the moment, the pressure in the fly ash treatment tank is regulated back to be stable, and when the pressure in the fly ash treatment tank is close to the atmospheric pressure, the controller controls the water pump to close; when the pressure monitoring element monitors the pressure drop in the fly ash treatment tank, the controller controls the second valve to be opened, at the moment, liquid in the upper tank body is discharged into the lower tank body, at the moment, gas in the lower tank body is extruded into the fly ash treatment tank, the pressure in the fly ash treatment tank is increased to be regulated back, until the pressure in the fly ash treatment tank is close to the atmospheric pressure, the controller can control the second valve to be closed at the moment, in order to prevent accidents, fluctuation conditions of liquid levels in the upper tank body and the lower tank body are monitored by the corresponding liquid level monitoring element, when the liquid level tends to break through the upper limit value or the lower limit value of the liquid level, the controller is required to control the water pump to be stopped urgently (the lower limit value of the liquid level in the lower tank body or the upper limit value of the liquid level in the upper tank body is broken through the upper limit value of the liquid level in the lower tank body), or the second valve is controlled to be closed urgently (the liquid level in the lower tank body breaks through the upper limit value of the liquid level in the upper tank body).

When the fly ash treatment system operates for a certain time, the gas components in the fly ash treatment tank are greatly changed (besides the protective gas, the waste gas after pyrolysis such as dioxin is also contained), and when the content of the waste gas is increased to obviously influence the fly ash detoxification effect, the first valve and the fourth valve can be opened at the moment to exhaust the lower tank (namely, indirectly exhaust the fly ash treatment tank), the exhausted gas is exhausted after being adsorbed by the waste gas filter, and meanwhile, the air inlet valve 7 is opened to replace fresh protective gas in the fly ash treatment tank (namely, indirectly replace fresh protective gas in the lower tank).

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, and those skilled in the art may easily implement the present utility model as shown in the drawings and described above, but many modifications, adaptations and variations of the present utility model using the above disclosed technical matters will be equivalent to the embodiments of the present utility model without departing from the scope of the present utility model, and meanwhile, any equivalent changes, adaptations and variations of the above embodiments according to the essential technology of the present utility model are all within the scope of the technical matters of the present utility model.

Claims (10)

1. The utility model provides a pneumatic balance piece, its characterized in that, including last jar body (11), lower jar body (12) and water pump (13), go up jar body (11) and set up the top of lower jar body (12), be provided with gaseous breathing interface (121), exhaust interface (122), flowing back interface (123) and backward flow interface (124) on lower jar body (12), be provided with feed liquor interface (111), play liquid interface (112) and pneumatic balance interface (113) on last jar body (11), exhaust interface (122) communicate with each other with the atmosphere and are provided with first valve (14), go out liquid interface (123) through water pump (13) with feed liquor interface (111) intercommunication, go out liquid interface (112) with backward flow interface (124) intercommunication to be provided with second valve (15) in the intercommunication department, pneumatic balance interface (113) are logical with the atmosphere, just pneumatic balance interface (113) department is provided with third valve (16), go up jar body (11) and lower jar body (12) and all with liquid.

2. The air pressure balance according to claim 1, further comprising an exhaust gas filter (17), the exhaust gas filter (17) having an air inlet and an air outlet, the exhaust interface (122) being in communication with the air inlet of the exhaust gas filter (17), the first valve (14) being disposed in communication therewith, the air outlet of the exhaust gas filter (17) being provided with a fourth valve (18).

3. The air pressure balance according to claim 2, characterized in that the filter element in the exhaust gas filter (17) is activated carbon.

4. The air pressure balance according to claim 1, characterized in that the upper tank (11) is provided at the upper end of the lower tank (12) and is integrally formed.

5. The air pressure balance of claim 1, wherein the air breathing interface (121) and the air exhaust interface (122) are both disposed at an upper end of the lower tank body (12), and the liquid discharge interface (123) and the backflow interface (124) are both disposed at a lower end of the lower tank body (12).

6. The air pressure balance piece according to claim 1, wherein the liquid inlet port (111) and the air pressure balance port (113) are arranged at the upper end of the upper tank body (11), and the liquid outlet port (112) is arranged at the lower end of the upper tank body (11).

7. The air pressure balance according to claim 2, characterized in that the exhaust gas filter (17) is provided at the upper end of the upper tank (11) or the lower tank (12).

8. A fly ash treatment system, characterized by comprising a fly ash treatment tank (2), a gas storage piece (3), a temperature regulating piece (4) and the air pressure balancing piece (1) according to any one of claims 1-7, wherein a feed inlet (21), a protective gas inlet (22), an air pressure balancing port (23) and a discharge port (24) are arranged on the fly ash treatment tank (2), a feed valve (5) is arranged at the feed inlet (21), a discharge valve (6) is arranged at the discharge port (24), the gas storage piece (3) is communicated with the protective gas inlet (22) and is provided with an air inlet valve (7) at the communication position, the air breathing interface (121) is communicated with the air pressure balancing port (23) and is provided with an adjusting valve (8) at the communication position, and the temperature regulating piece (4) is arranged on the fly ash treatment tank (2) and is used for regulating the temperature of fly ash in the fly ash treatment tank (2).

9. The fly ash treatment system according to claim 8, wherein liquid level monitoring elements (19) are arranged in the upper tank body (11) and the lower tank body (12), and a pressure monitoring element (25) for monitoring the pressure in the fly ash treatment tank (2) is arranged on the fly ash treatment tank (2).

10. The fly ash treatment system of claim 9, further comprising a controller (9), wherein the second valve (15) is an electrically operated valve, and wherein the second valve (15), the water pump (13), the pressure monitoring element (25) and both the liquid level monitoring elements (19) are electrically connected to the controller (9).