CN216170730U - Thermal cracking dust removal device for sludge - Google Patents

Abstract

The utility model provides a sludge thermal cracking dust removal device, relates to the technical field of sludge treatment, and particularly relates to a sludge thermal cracking dust removal device which comprises a shell, wherein a dust filter bag mounting frame is arranged in the shell, a plurality of dust filter bags are mounted on the dust filter bag mounting frame, a first air inlet pipe and an air outlet pipe are respectively arranged on the side walls below and above the dust filter bag mounting frame, the first air inlet pipe is connected with a primary filter chamber, a plurality of grating plates are uniformly distributed in the primary filter chamber and perpendicular to the first air inlet pipe, an activated carbon adsorption layer is arranged on the surfaces of the grating plates, a second air inlet pipe is arranged at one end, far away from the first air inlet pipe, of the primary filter chamber, a jacket layer is arranged on the outer wall of the primary filter chamber, a slag discharge pipe is arranged at the bottom of the shell, and a slag discharge valve is mounted in the slag discharge pipe. The problem of the oily material that mixes in the pyrolysis gas can lead to the dust filter bag to stick with paste the bag, and high temperature pyrolysis gas can reduce dust filter bag life is solved.

Description

Thermal cracking dust removal device for sludge

Technical Field

The utility model relates to the technical field of sludge treatment, in particular to a sludge thermal cracking dust removal device.

Background

Sludge is a solid precipitate produced by water and sewage treatment processes, and sludge treatment is a process of concentrating, conditioning, dewatering, stabilizing, drying or incinerating sludge, and there are many methods for treating sludge, such as chemical and physical methods: incineration, oxychlorination, ozone oxidation and combustion, biological treatment methods such as: bioremediation, traditional composting, and the like.

The sludge pyrolysis is to utilize the thermal instability of organic matters in the sludge and heat the organic matters in an oxygen-free environment to thermally crack the organic matters to form pyrolysis gas and carbonized sludge with higher utilization value, and the products have the characteristics of easy storage, easy transportation and convenient use, and provide an effective way for reduction, stabilization, harmlessness and recycling of the sludge.

In the process of heating and carbonizing the sludge, a large amount of smoke dust and oily substances are mixed in the generated cracked gas, so that the cracked gas needs to be subjected to dust removal treatment preferentially in the process of treating the cracked gas. As the cracked gas has certain instability, most of dust removing equipment is not suitable, and a bag type dust remover with higher safety is selected as the dust removing equipment. However, oily substances mixed in the pyrolysis gas can adhere to the dust filter bag, which causes the dust filter bag to be blocked, and the higher temperature of the pyrolysis gas can also reduce the service life of the dust filter bag.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the utility model provides a sludge thermal cracking dust removal device, which aims to solve the problems that oily substances mixed in cracking gas cause bag pasting of a dust filter bag, and the service life of the dust filter bag is shortened by high-temperature cracking gas.

In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows:

the utility model provides a mud thermal cracking dust collector, which comprises a housin, be provided with dust bag mounting bracket in the casing, install a plurality of dust bags on the dust bag mounting bracket, be provided with first intake pipe and outlet duct on the lateral wall of dust bag mounting bracket below and top respectively, first intake-tube connection has primary filter chamber, a plurality of grating boards are installed to the indoor perpendicular first intake pipe direction of admitting air of primary filter, grating board surface all is provided with the active carbon adsorption layer, primary filter chamber is kept away from first intake pipe one end and is provided with the second intake pipe, primary filter chamber outer wall is provided with the jacket layer, the casing bottom is provided with the pipe of slagging tap, it installs the valve of slagging tap to slag tap in the pipe.

Further, the through holes on the adjacent grating plates are arranged in a staggered mode. And (3) draining the cracked gas to ensure that the cracked gas can be fully contacted with the activated carbon adsorption layer on the grid plate, and oily substances in the cracked gas are adsorbed and filtered.

Further, be provided with temperature sensor in the first intake pipe, temperature sensor and external control end electric connection. An operator can regulate and control the temperature of the cooling liquid introduced into the jacket layer in real time through temperature information fed back by the temperature sensor, and unnecessary loss caused by overhigh temperature of pyrolysis gas or failure of the cooling liquid in the jacket layer is avoided.

Furthermore, the air distribution plates with the panels facing the opening of the first air inlet pipe are arranged below the dust filter bag, and the horizontal positions of the lowermost ends of the air distribution plates are uniformly lowered along the direction far away from the first air inlet pipe. When the bag type dust removal device works, in order to avoid the dust and slag from settling in the air inlet pipe to block the pipeline, the wind speed in the air inlet pipe is very fast. Therefore, the air distribution plate is arranged in the shell to distribute the split air to a certain degree, so that the air flow in the shell is distributed more uniformly, the impact of the air flow on the dust filter bag is eliminated, the running load of the dust filter bag is reduced, and the service life of the device is prolonged; the phenomenon of backward flow in the dust collecting hopper is weakened through the shunting action of the air distribution plate, secondary dust raising is avoided, and the dust removal efficiency of the device is greatly improved.

Further, the lower end of the air distribution plate is arc-shaped, and the circle center of the lower end of the air distribution plate is arranged at one end close to the first air inlet pipe. Set up an circular arc at the grid plate lower extreme, can avoid the air current directly to hit the grid plate and lead to the air current random flow, the circular arc can be effectual leads to the dust filter bag department of top with the air current, has greatly improved the order of air current, has improved the water conservancy diversion effect of grid plate.

Furthermore, a pulse dust blowing device is arranged above the dust filter bag. High-speed flowing air flow is sprayed to the dust filter bag according to a certain period and is blown to the interior of the dust filter bag to form air waves, so that the dust filter bag generates sharp expansion and impact vibration from top to bottom, and dust residues on the dust filter bag are shaken to fall to a pipe orifice of a slag discharging pipe below the shell.

Further, the bottom of the shell is provided with a dust and slag observation window. Make things convenient for operating personnel to observe the accumulational condition of casing below dirt sediment at any time, when piling up to a certain extent, can open the valve of slagging tap and discharge the dirt sediment.

The utility model has the beneficial effects that:

after being discharged from the pyrolysis gas sludge heat treatment reaction kettle, the pyrolysis gas sludge is preferentially led into the primary filtering chamber, in the primary filtering chamber, the oily substances in the pyrolysis gas are absorbed and filtered by the activated carbon absorption layer on the grating plate, and the problem that the dust filter bag is stuck when the pyrolysis gas passes through the dust filter bag can be effectively avoided; when high temperature pyrolysis gas passes through the dust filter bag, cause the dust filter bag to take place the phenomenon of high temperature shrink or fever bag, can let in the coolant liquid in the jacket layer that primary filter chamber outer wall set up, can reduce the temperature of the pyrolysis gas in the primary filter chamber fast through the heat exchange, greatly improved the life of dust filter bag.

After the oil and the temperature of the pyrolysis gas are removed through the primary filter chamber, the pyrolysis gas is introduced into the shell for dust removal treatment. The plurality of dust filter bags can effectively improve the dust removal efficiency, and the cracked gas after dust removal is discharged out of the shell through the air outlet pipe above the shell for storage or reutilization. The dirt sediment after the dust filter bag filters can pile up the pipe orifice department of slagging tap of casing bottom, and when piling up the certain degree, operating personnel can open the valve of slagging tap and discharge the dirt sediment.

Drawings

FIG. 1 is a structural diagram of the thermal cracking dust-removing device for sludge

Wherein, 1, a shell; 101. a first intake pipe; 102. an air outlet pipe; 103. a slag pipe; 104. a slag valve; 2. a dust filter bag mounting rack; 3. a dust filter bag; 4. a primary filtration chamber; 41. a grid plate; 42. a second intake pipe; 43. a jacket layer; 5. a wind distribution plate; 6. a pulse dust blowing device; 7. a dust slag observation window.

Detailed Description

The general idea for solving the technical problems in the embodiment of the application is as follows:

for better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the embodiments.

As shown in fig. 1, the thermal cracking and dust removing device for sludge includes a housing 1, a dust filter bag mounting rack 2 is disposed in the housing 1, a plurality of dust filter bags 3 are mounted on the dust filter bag mounting rack 2, and in this embodiment, the dust filter bags 3 are made of PTFE. The side walls below and above the dust filter bag mounting frame 2 are respectively provided with a first air inlet pipe 101 and an air outlet pipe 102, the bottom of the shell 1 is provided with a slag outlet pipe 103, and a slag outlet valve 104 is installed in the slag outlet pipe 103. The bottom of the shell 1 is set to be in a cone hopper shape, the slag discharging pipe 103 is arranged at the center of the cone hopper, and a dust and slag observation window is arranged on the side wall of the cone hopper. When pyrolysis gas enters the shell 1 from the first gas inlet pipe 101, dust and slag are filtered out through the dust filter bag 3 and then discharged from the gas outlet pipe 102 above for storage or secondary utilization; the dust and slag can be retained at one side below the mounting frame 2 of the dust filter bag and deposited at the bottom of the shell 1, and when the dust and slag are accumulated to a certain degree, an operator opens the slag discharging valve 104 to discharge the dust and slag.

In order to solve the problem that oily substance mixed with the pyrolysis gas can lead to the dust filter bag 3 to be pasted with a paste bag, and the high temperature pyrolysis gas can reduce the service life of the dust filter bag 3, a first air inlet pipe 101 is connected with a primary filter chamber 4, and one end of the primary filter chamber 4, far away from the first air inlet pipe 101, is provided with a second air inlet pipe 42. A plurality of grating plates 41 are arranged in the primary filtering chamber 4 in a direction vertical to the air inlet direction of the first air inlet pipe 101, cracked gas enters the primary filtering chamber 4 from the second air inlet pipe 42 and leaves the primary filtering chamber 4 from the first air inlet pipe 101, and during the period, the cracked gas can be fully contacted with the grating plates 41. All be provided with the active carbon adsorption layer on grating 41 surface, the oily material in the adsorbable pyrolysis gas of active carbon, and the crisscross setting of through-hole on the adjacent grating 41 can carry out the drainage to the pyrolysis gas for the pyrolysis gas can fully contact with the active carbon adsorption layer on grating 41.

The outer wall of the primary filter chamber 4 is provided with a jacket layer 43, in this embodiment, in order to increase the cooling rate of the cracked gas, the jacket layer 43 is an integral jacket layer, a cooling liquid can be introduced into the jacket layer 43, and the temperature of the cracked gas is reduced through heat exchange. In addition, be provided with temperature sensor in the first intake pipe 101, temperature sensor and external control end electric connection, through the temperature information of temperature sensor feedback, whether select the temperature that needs the adjustment coolant liquid, or foresee in advance whether the coolant liquid is inefficacy.

The dust filter bag 3 below all is provided with the panel towards the orificial air distribution plate 5 of first intake pipe 101, and the horizontal position of air distribution plate 5 bottommost descends along the direction of keeping away from first intake pipe 101 is even. The lower end of the air distribution plate 5 is arc-shaped, the circle center of the lower end of the air distribution plate 5 is arranged at one end close to the first air inlet pipe 101, the arc-shaped lower end can prevent air flow from directly striking the air distribution plate, and therefore air flow turbulence is caused, the arc can effectively guide the air flow to the dust filter bag above, and the flow guide effect of the air distribution plate is improved.

The dust filter bag 3 is provided with the pulse dust blowing device 6 above, in this embodiment, the pulse dust blowing device 6 includes an injection tube, a pulse solenoid valve and an air compressor, one end of the injection tube is fixed above the dust filter bag 3, and the tube orifice faces the central position of the dust filter bag 3, the other end of the injection tube penetrates through the top surface of the shell 1 and is connected with the air compressor, the pulse solenoid valve is installed on the injection tube section outside the shell 1, and the pulse solenoid valve is electrically connected with an external control end. Through the control of the control end, the pulse dust blowing device 6 sprays air to the dust filter bag 3 at certain time intervals to form air waves, so that the dust filter bag 3 generates sharp expansion and impact vibration from top to bottom, and dust slag on the dust filter bag 3 is vibrated to fall to a pipe orifice of the slag discharge pipe 103 below the shell.

In view of the above, it is desirable to provide,

it should be apparent to those skilled in the art that while the preferred embodiments of the present invention have been described, additional variations and modifications in these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the utility model. It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the machine equivalent technology of the claims of the present invention, it is intended that the present invention also include such modifications and variations.

Claims (7)

1. The sludge thermal cracking dust removal device is characterized by comprising a shell (1), wherein a dust filtering bag mounting frame (2) is arranged in the shell (1), a plurality of dust filtering bags (3) are mounted on the dust filtering bag mounting frame (2), a first air inlet pipe (101) and an air outlet pipe (102) are respectively arranged on the side walls below and above the dust filtering bag mounting frame (2), the first air inlet pipe (101) is connected with a primary filtering chamber (4), the primary filtering chamber (4) is internally vertical to the air inlet direction of the first air inlet pipe (101) and is provided with a plurality of grating plates (41), the surfaces of the grating plates (41) are respectively provided with an activated carbon adsorption layer, one end of the primary filtering chamber (4) is far away from the first air inlet pipe (101) and is provided with a second air inlet pipe (42), the outer wall of the primary filtering chamber (4) is provided with a jacket layer (43), and the bottom of the shell (1) is provided with a slag outlet pipe (103), a slag discharging valve (104) is arranged in the slag discharging pipe (103).

2. The thermal cracking dust removing device for sludge as claimed in claim 1, wherein the through holes of adjacent grid plates (41) are staggered.

3. The thermal cracking and dust removing device for sludge as claimed in claim 1, wherein a temperature sensor is disposed in the first air inlet pipe (101), and the temperature sensor is electrically connected to an external control end.

4. The thermal cracking dust removing device for sludge according to claim 1, wherein an air distribution plate (5) with a panel facing the direction of the opening of the first air inlet pipe (101) is disposed below the dust filter bag (3), and the horizontal position of the lowest end of the air distribution plate (5) is uniformly lowered along the direction away from the first air inlet pipe (101).

5. The thermal cracking and dust removing device for sludge according to claim 4, wherein the lower end of the air distribution plate (5) is arranged in a circular arc shape, and the center of the circle of the lower end of the air distribution plate (5) is arranged at one end close to the first air inlet pipe (101).

6. A thermal cracking and dust removing device for sludge as claimed in claim 1, wherein a pulse dust blowing device (6) is arranged above the dust filtering bag (3).

7. A thermal cracking and dust removing device for sludge as claimed in claim 1, wherein the bottom of the housing (1) is provided with a dust observation window (7).

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