Oil sludge drying machine with high exhaust gas combustion rate

Abstract

This utility model relates to the field of oily sludge treatment technology, specifically to an oily sludge dryer with high exhaust gas combustion rate. It includes a drum-type dryer body, a collecting cylinder at the feed end of the dryer body, the collecting cylinder being sleeved with the dryer body, an air guide pipe at the upper part of the collecting cylinder, and a combustion chamber at the upper part of the air guide pipe. An ignition plate is installed inside the combustion chamber, with the flame direction of the ignition plate opposite to the exhaust gas flow direction, thereby improving heat utilization, enhancing drying effect, and ensuring full contact between the exhaust gas and the flame, thus increasing the exhaust gas combustion rate.

Description

Technical Field

[0001] This utility model relates to the field of oily sludge treatment technology, specifically to an oily sludge dryer with high exhaust gas combustion rate. Background Technology

[0002] The large amount of oil sludge generated during the oilfield industry's production processes, including crude oil extraction, oil and gas gathering and transportation, and wastewater treatment in oil refining and chemical plants, has become a significant challenge for the industry. However, the level of environmental management and harmless treatment of oily sludge in China is relatively low. Oily sludge has a complex composition, consisting of a stable suspension emulsion system composed of oil-in-water, water-in-oil, and suspended solids, exhibiting high viscosity and strong stability. It also contains harmful substances such as polycyclic aromatic hydrocarbons (PAHs), harmful microorganisms, and pathogens. The failure to treat oily sludge in a timely manner poses a significant pollution hazard to the atmosphere, water bodies, and soil in the production area, and oily sludge has been classified as hazardous waste.

[0003] In existing technologies, oil sludge drying and pyrolysis is a clean thermal treatment of oil sludge, which is regarded as a new treatment technology that can replace incineration both domestically and internationally. Common treatment equipment involves introducing the oil sludge from the production process into a drying device, where it is dried at high temperature to separate oil, gas, moisture, and other substances from the oil sludge, thereby reducing the content of harmful substances in the oil sludge. However, existing equipment mostly treats the exhaust gas generated during the drying process by direct ignition, but due to incomplete combustion during the ignition process, some oil and gas will overflow into the atmosphere, resulting in low treatment efficiency. Therefore, this technical solution is proposed to improve the process. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the low combustion efficiency of exhaust gas generated during the drying process of oil sludge in the prior art, and to provide an oil sludge dryer with high exhaust gas combustion rate.

[0005] To achieve the above objectives, this utility model embodiment adopts the following technical solution: a sludge dryer with high exhaust gas combustion rate, comprising a drum dryer body, a collecting cylinder provided at the feed end of the dryer body, the collecting cylinder being sleeved with the dryer body, an air guide pipe provided at the upper part of the collecting cylinder, a combustion chamber provided at the upper part of the air guide pipe, an ignition plate provided inside the combustion chamber, and the flame direction of the ignition plate being opposite to the flow direction of the exhaust gas.

[0006] Furthermore, a support frame is provided on the outside of the collecting cylinder, and the combustion chamber is arranged laterally on the top of the support frame.

[0007] Furthermore, the connection between the air guide pipe and the combustion chamber is inclined.

[0008] Furthermore, the combustion chamber is provided with a conical connecting pipe at its outlet, and a cyclone dust collector is provided at the outlet of the conical connecting pipe, with an exhaust fan positioned in the outlet direction of the cyclone dust collector.

[0009] Furthermore, the exhaust fan is equipped with an exhaust gas treatment device in the exhaust direction.

[0010] Furthermore, the exhaust gas treatment device is a water curtain dust removal tower.

[0011] The beneficial effects of this utility model embodiment are as follows: A material collection cylinder is set at the feed end of the dryer, and the material collection cylinder is sleeved with the dryer body. The material collection cylinder remains stable when the dryer body rotates. During use, the exhaust gas generated during the drying process inside the dryer body is drawn into the combustion chamber by the exhaust fan. Setting the material collection cylinder and the combustion chamber at the feed end makes the exhaust gas extraction direction opposite to the solid material conveying direction. When the exhaust gas flows to the left, it also increases the temperature at the feed end of the dryer body, thereby improving the heat utilization rate, improving the drying effect, and allowing the exhaust gas to fully contact the flame, thereby improving the exhaust gas combustion rate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of this utility model from another angle;

[0014] Figure 3 This is a side view structural diagram of the present invention;

[0015] In the diagram: 1. Truss; 101. Support beam; 102. Connecting hole; 2. Dryer body; 201. Collector cylinder; 202. Air guide pipe; 203. Combustion chamber; 3. Cyclone dust collector; 301. Support leg; 302. Reinforcing rod; 4. Dust removal tower; 5. Fan. Detailed Implementation

[0016] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely for explaining the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0017] See Figures 1 to 3 This utility model discloses a mobile sludge dryer, which uses a drum dryer body 2 as the core processing component and is designed as a mobile structure to solve the problems of low utilization and high cost of fixed dryers. When in use, the material enters the interior from the left side of the dryer body 2. During the rotation and drying process, the sludge moves to the right side and the dried sludge is discharged from the rightmost outlet.

[0018] Specifically, the sludge dryer is mounted on a truss 1. The bottom of the truss 1 is equipped with a support beam 101, which is arranged laterally and protrudes slightly from the truss 1 at both ends. The ends of the support beam 101 are provided with connecting holes 102 for connecting lifting rings, so that the truss 1 and the dryer body 2 can be integrated. In use, only a truck is needed to transport the truss 1 and the dryer body 2 to the place of use. The connecting holes 102 at both ends of the support beam 101 facilitate crane lifting and move the entire dryer to the sludge generation location using lifting equipment. There is no need to transport the sludge to a fixed dryer location, which improves the utilization rate of the equipment and reduces the operating cost.

[0019] A collection cylinder 201 is installed at the feed end of the dryer, and the collection cylinder 201 is sleeved with the dryer body 2. The collection cylinder 201 remains stable when the dryer body 2 rotates, ensuring the entry of materials. A gas guide pipe 202 is installed on the upper part of the collection cylinder 201, and a combustion chamber 203 is installed on the upper part of the gas guide pipe 202. During use, the exhaust gas generated during the drying process inside the dryer body 2 is drawn into the combustion chamber 203 by the exhaust fan 5. The placement of the collection cylinder 201 and the combustion chamber 203 at the feed end ensures that the exhaust gas extraction direction is opposite to the solid material conveying direction. When the exhaust gas flows to the left, it also increases the temperature at the feed end of the dryer body 2, thereby improving the heat utilization rate and the drying effect. An ignition plate is installed inside the combustion chamber 203, and the flame direction of the ignition plate is opposite to the exhaust gas flow direction. This design allows the exhaust gas to fully contact the flame, improves the exhaust gas combustion rate, and effectively avoids the problem of oil and gas overflowing into the atmosphere due to incomplete combustion. Meanwhile, the connection between the air duct 202 and the combustion chamber 203 is set at an angle to accelerate the air intake and facilitate the smooth entry of exhaust gas into the combustion chamber 203 for combustion treatment.

[0020] To ensure the stability of the combustion process, a support frame is installed on the outside of the collecting cylinder 201. The bottom of the support frame is connected to the truss 1, so that the dryer body 2 can move as a whole with the combustion chamber 203 when it moves, reducing the number of disassembled parts and improving the performance. The combustion chamber 203 is horizontally set on the top of the support frame, providing stable support for the combustion chamber 203. A conical connecting pipe is installed at the outlet of the combustion chamber 203. The outlet of the conical connecting pipe is connected to the cyclone dust collector 3, so that the exhaust gas during combustion is concentrated in the middle position, improving the combustion efficiency of the exhaust gas and ensuring the performance. The cyclone dust collector 3 is detachably connected to the combustion chamber 203, which facilitates the disassembly, transportation, installation, maintenance and repair of the equipment. The cyclone dust collector 3 can perform preliminary dust removal treatment on the exhaust gas after combustion, removing larger particles of impurities and reducing the burden on exhaust gas treatment.

[0021] A movable frame is provided on the side of the cyclone dust collector 3. The movable frame includes a connecting block on the side of the cyclone dust collector 3, a support leg 301 is hinged to the connecting block, and a reinforcing rod 302 is hinged to the lower part of the support leg 301. The support leg 301 is foldable by means of a pin connection. The movable frame design allows the support leg 301 and the reinforcing rod 302 to be folded up when the equipment is moved, reducing the space occupied by the equipment and facilitating transportation. When the equipment is working, the support leg 301 and the reinforcing rod 302 are unfolded to provide stable support for the cyclone dust collector 3, reducing disassembly and assembly time. During transportation, the cyclone dust collector 3 only needs to be separated from the combustion chamber 203 for hoisting, reducing the number of transfer steps and improving the efficiency of use.

[0022] A blower 5 is installed at the outlet of the cyclone dust collector 3. The blower 5 is connected to the cyclone dust collector 3 by a flexible hose. The flexible hose connection has a certain degree of flexibility, which can adapt to the slight displacement that occurs during the movement of the equipment, ensuring the sealing of the connection. It also facilitates storage during transportation. An exhaust gas treatment device is installed at the outlet of the blower 5. The exhaust gas treatment device includes an exhaust gas combustion section and an exhaust gas absorption section. The exhaust gas combustion section includes a combustion chamber 203. An ignition plate is installed inside the combustion chamber 203 to burn the exhaust gas generated during the drying process. The exhaust gas absorption section uses a water curtain dust removal tower 4, which can absorb and purify the exhaust gas after combustion, further ensuring that the exhaust gas meets the emission standards. An exhaust fan 5 is installed in the air inlet duct of the dust removal tower 4. A cyclone dust collector 3 is installed at the inlet end of the exhaust fan 5. The air inlet of the cyclone dust collector 3 is connected to the exhaust gas combustion section. The exhaust gas, after preliminary treatment by the cyclone dust collector 3, enters the water curtain dust removal tower 4 for further purification under the action of the exhaust fan 5. The water curtain dust removal tower 4 adsorbs and dissolves fine particles and harmful substances in the exhaust gas through a water curtain, so that the exhaust gas emitted into the atmosphere meets environmental protection standards, effectively reducing pollution to the environment. Through the dual treatment of the cyclone dust collector 3 and the water curtain dust removal tower 4, the exhaust gas treatment effect is improved, ensuring that harmful substances in the exhaust gas are fully removed. By adopting a mobile design, optimizing the exhaust gas combustion structure, and using a multi-stage exhaust gas treatment device, the problems of incomplete exhaust gas treatment, low treatment efficiency, low equipment utilization, and high cost of existing oil sludge drying equipment are effectively solved.

[0023] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0026] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A sludge dryer with high exhaust gas combustion rate, comprising a drum dryer body, characterized in that: The dryer body has a material collection cylinder at its feed end, which is sleeved with the dryer body. The upper part of the material collection cylinder is equipped with a gas guide pipe, and the upper part of the gas guide pipe is equipped with a combustion chamber. The combustion chamber is equipped with an ignition plate, and the flame direction of the ignition plate is opposite to the flow direction of the exhaust gas.

2. The sludge dryer with high exhaust gas combustion rate according to claim 1, characterized in that: A support frame is provided on the outside of the collection cylinder, and the combustion chamber is arranged laterally on the top of the support frame.

3. The sludge dryer with high exhaust gas combustion rate according to claim 2, characterized in that: The connection between the air guide pipe and the combustion chamber is inclined.

4. The sludge dryer with high exhaust gas combustion rate according to claim 1, characterized in that: The combustion chamber has a conical connecting pipe at its outlet, a cyclone dust collector at its outlet, and an exhaust fan at the outlet direction of the cyclone dust collector.

5. The sludge dryer with high exhaust gas combustion rate according to claim 4, characterized in that: The exhaust fan is equipped with an exhaust gas treatment device in the direction of its air outlet.

6. The sludge dryer with high exhaust gas combustion rate according to claim 5, characterized in that: The exhaust gas treatment device is a water curtain dust removal tower.

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