CN111620536A

CN111620536A - Oily sludge recovery dryer

Info

Publication number: CN111620536A
Application number: CN202010573733.XA
Authority: CN
Inventors: 汪博; 陆秀兵; 陈明
Original assignee: Suzhou Lehong Environmental Protection Technology Co ltd
Current assignee: Suzhou Lehong Environmental Protection Technology Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2020-09-04

Abstract

The invention discloses an oily sludge recovery dryer, which comprises a steam injection device, wherein the steam injection device comprises a box body and a spiral feeding shaft in the box body, a vertical plate is arranged in the box body, and a sludge inlet and a sludge outlet are formed in the upper end of the box body; a feeding bin is arranged at the sludge inlet, a plurality of rows of steam pipes are arranged on the box body, one end of each steam pipe is provided with a high-pressure spray head, the other end of each steam pipe is connected with an external steam source, an exhaust port is arranged at the upper end of the box body and is connected with the inlet of the condenser through the exhaust pipe, and the outlet of the condenser is connected with the inlet of the oil-water separation device; the sludge outlet of the box body is connected with a sludge filter-pressing device, and a sewage discharge pipe of the sludge filter-pressing device is connected with the inlet of the oil-water separation device through a pipeline. High-temperature cleaning is carried out by adopting high-pressure steam, sludge blocks can be dispersed, oil in the sludge is effectively released, the oil is collected and recovered after being mixed with water vapor, and the remaining sludge is dried, so that resources are fully utilized, and the environment-friendly effect is effectively played.

Description

Oily sludge recovery dryer

Technical Field

The invention relates to the technical field of sludge treatment, in particular to an oil-containing sludge recycling dryer.

Background

With the development of the petroleum industry, a large amount of oily sludge generated in the processes of exploration, exploitation, gathering, transportation, refining and the like can pollute the surrounding soil, water and air if the oily sludge is not treated.

The existing sludge dryer feeds sludge from a feeding port to a discharging port by rotating a spiral feeding shaft in a shell, and the sludge is extruded and dried in the feeding process. But the dried sludge contains oil, so that potential safety hazards exist.

Disclosure of Invention

The invention aims to provide an oil-containing sludge recycling dryer which is used for overcoming the defects.

In order to achieve the above purposes, the invention adopts the technical scheme that: an oil-containing sludge recycling dryer comprises a steam injection device, wherein the steam injection device comprises a box body and a spiral feeding shaft arranged in the box body, a vertical plate is arranged in the box body, the spiral feeding shaft stretches across two sides of the vertical plate, and a sludge inlet and a sludge outlet are formed in the upper end of the box body positioned on the left side and the right side of the vertical plate; a funnel-shaped feeding bin is arranged at the sludge inlet, a plurality of rows of steam pipes are arranged on the box body on the left side of the vertical plate, one end of each steam pipe is positioned in the box body, a high-pressure spray head is arranged on each steam pipe, the other end of each steam pipe is connected with an external steam source, and each steam pipe is provided with a switch valve; an exhaust port (an exhaust fan is arranged at the exhaust port) is arranged at the upper end of the box body, the exhaust port is connected with an inlet of a condenser through an exhaust pipe, and an outlet of the condenser is connected with an inlet of the oil-water separation device; the sludge outlet of the box body is connected with a sludge filter-pressing device, and a sewage discharge pipe of the sludge filter-pressing device is connected with an inlet of the oil-water separation device through a pipeline.

Furthermore, the steam pipes are arranged on two sides of the box body, and the steam discharging pipes on the two sides are distributed in a staggered mode. The steam pipes distributed in a staggered mode can cover the steam range to the maximum extent, and contact between steam and sludge is increased.

Furthermore, the box body on the left side of the vertical plate is provided with a sand elimination storage. The place is the key gathering area of greasy dirt, and through the design of fire control sand, when the safety problem appears, accessible fire control sand covers the greasy dirt, avoids it to catch fire or is used for putting out a fire.

Furthermore, the box body on the right side of the vertical plate is provided with an ultrasonic deodorizer, so that odor of products in the sludge treatment process is reduced.

Further, a collecting tank is arranged below the outlet of the feeding bin, the collecting tank is located above the spiral feeding shaft, a material pushing plate is arranged on the collecting tank, and a pushing cylinder for pushing the material pushing plate is arranged on the collecting tank.

Furthermore, one side of the collecting tank, which is close to the vertical plate, is provided with a notch and can be abutted against the vertical plate; the collecting tank is characterized in that a support is arranged on the tank body below the collecting tank, a sliding rail is arranged between the collecting tank and the support, a telescopic cylinder is arranged on the support, and a telescopic end of the telescopic cylinder is hinged to the collecting tank. Can promote the collecting vat like this and remove along the slide rail direction, with the cooperation of scraping wings with the mud of collecting vat push screw feeding axle department.

At the beginning, telescopic cylinder is in the contraction state, and the collecting vat supports and leans on the riser. Oily sludge enters the box body from the feeding bin, the high-pressure spray head carries out high-pressure cleaning on the oily sludge, the oily sludge is scattered on one hand, and on the other hand, oil stains in the oily sludge are discharged from the exhaust port along with water vapor and enter the condenser to be condensed into liquid, and then oil-water separation is carried out. After the high-pressure steam is finished, the spiral feeding shaft is started, sludge is pushed to the sludge outlet and enters the sludge filter pressing device for mud-water separation, liquid at the filter pressing position is subjected to oil-water separation, and solid obtained by filter pressing is dried.

Compared with the prior art, the high-temperature cleaning method has the advantages that high-pressure steam is adopted for high-temperature cleaning, sludge blocks can be dispersed, oil in the sludge is effectively released, the oil is collected and recovered after being mixed with water vapor, and the remaining sludge is dried, so that resources are fully utilized, and the environment-friendly effect is effectively achieved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

FIG. 2 is a schematic view showing the connection of a steam pipe according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of a second steam injection device according to an embodiment of the present invention.

FIG. 4 is a schematic diagram of a collecting tank according to an embodiment of the present invention.

In the figure:

1-a steam injection device; 101-a box body; 102-a helical feed shaft; 103-vertical plate; 120-steam pipe; 121-high pressure spray head; 122-a switch valve; 123-a steam source; 130-an exhaust pipe; 140-a collection tank; 141-a material pushing plate; 142-a push cylinder; 143-telescopic cylinder; 144-a scaffold; 145-a slide rail; 150-ultrasonic deodorizer; 160-a memory; 2-a condenser; 3-an oil-water separation device; 4-sludge press filtration device.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.

Examples

Referring to the attached drawing 1, the oily sludge recycling dryer in the embodiment includes a frame, and the frame is sequentially provided with:

the steam injection device 1 is used for separating oil from oily sludge to form water vapor mixed with the oil;

a condenser 2 for condensing the water vapor mixed with the oil into a liquid;

an oil-water separation device 3 for separating oil from water in the oil-water mixed liquid;

and the sludge filter pressing device 4 is used for carrying out filter pressing treatment on the sludge subjected to oil-water separation, guiding the filtered liquid into the oil-water separation device for oil-water separation, and drying the residual solids after filter pressing.

The electric control cabinet is arranged on the rack and used for supplying power to electric components on the dryer and controlling the electric components to operate orderly, the control technology can be realized by adopting the conventional PLC technology, and the electric control cabinet belongs to the conventional technical means for technical personnel in the electric field.

The steam injection device 1 comprises a box body 101, wherein a spiral feeding shaft 102 is arranged in the box body 101, a vertical plate 103 is arranged in the box body 101, the spiral feeding shaft 102 stretches across two sides of the vertical plate, and a sludge inlet and a sludge outlet are formed in the upper end of the box body 101 located on the left side and the right side of the vertical plate 103. The screw feeding shaft 102 capable of conveying sludge from the sludge inlet to the sludge outlet is a prior art, see patent document CN 207483599U.

A funnel-shaped feeding bin 110 is arranged at the sludge inlet, and a plurality of rows of steam pipes 120 are arranged on the box body on the left side of the vertical plate 103. Referring to fig. 2, one end of the steam pipe 120 is positioned in the casing 101 and provided with a high pressure nozzle 121, the other end of the steam pipe 120 is connected to an external steam source 123, and each steam pipe 120 is provided with a switching valve 122. Through the structural design, a plurality of controllable high-pressure steam injection points are arranged at the sludge feeding position, so that the sludge at the position can be injected at high pressure, massive sludge is sprayed, upward steam is formed, and oil in the sludge is taken away by the steam.

Be equipped with the gas vent (gas vent department is equipped with the exhaust fan) in the upper end of box 101, the gas vent passes through blast pipe 130 and links to each other with condenser 2's entry, condenser 2's export links to each other with oil water separator 3's entry. A first pipeline is arranged between the outlet of the condenser 2 and the inlet of the oil-water separation device 3, a pump is arranged on the first pipeline, and liquid flowing out of the condenser 2 is injected into the oil-water separation device 3. Of course, when the height of the condenser 2 is higher than the height of the oil-water separator 3, the liquid can be directly injected into the oil-water separator 3 by the liquid flow without pumping by using the flow characteristics of the liquid. The oil-water separator 3 in the present embodiment is a conventional device, and can be referred to patent document CN 202529888U.

The screw feeding shaft 102 pushes the sludge after deoiling to a sludge outlet, the sludge outlet of the box body 101 is connected with the sludge filter-pressing device 4, a sewage discharge pipe of the sludge filter-pressing device 4 is connected with an inlet of the oil-water separation device through a pipeline, a sludge discharge pipe of the sludge filter-pressing device 4 is connected with a drying box, and the sludge after filter-pressing is dried. Wherein the inlet of the sludge filter-pressing device is positioned below the sludge outlet of the box body 101, and the sludge outlet and the sludge filter-pressing device can be provided with guide pipes or directly connected with each other, so that the sludge can enter the sludge filter-pressing device 4. The sludge press-filtering device 4 in this embodiment belongs to the existing equipment, and can be referred to patent document CN 210457905U.

The steam pipes 120 in this embodiment are disposed on both sides of the box body 101, and the steam discharge pipes 120 on both sides are distributed in a staggered manner, so as to cover the steam range maximally and increase the contact between the steam and the sludge. Because the box 101 on the left side of the vertical plate 103 is a key gathering area of oil stains, a storage 160 for storing fire-fighting sand is arranged on the box 101 at the position for safety, and when safety problems occur, the oil stains can be covered by the fire-fighting sand, so that fire is avoided or the fire is extinguished.

An ultrasonic deodorizer 150 is arranged in the box body 101 on the right side of the vertical plate 103, so that odor of products in the sludge treatment process is reduced.

Through above-mentioned structural design, adopt high-pressure steam to carry out high-temperature cleaning, can break away the sludge cake, the oil in the effectual release mud, oil is collected after mixing along with the steam and is retrieved to carry out drying process to remaining mud, abundant utilization the resource, the effectual environmental protection that has played.

As a further modification of the present embodiment, as shown in fig. 3 and 4, a collecting tank 140 may be provided below the outlet of the feeding bin 110, the collecting tank 140 is located above the spiral feeding shaft 102, a pushing plate 141 is provided on the collecting tank 140, and a pushing cylinder 142 for pushing the pushing plate 141 is provided on the collecting tank 140. One side of the collecting groove 140 close to the vertical plate 103 is a gap and can be abutted against the vertical plate 103; a support 144 is arranged on the box body 101 below the collecting groove 140, a sliding rail 145 is arranged between the collecting groove 140 and the support, a telescopic cylinder 143 is hinged on the support 144, and a telescopic end of the telescopic cylinder is hinged on the collecting groove 140. Therefore, the collecting tank can be pushed to move along the direction of the slide rail 145, and the sludge in the collecting tank 140 is pushed to the spiral feeding shaft by matching with the material pushing plate 141. After the structure is adopted, the high-pressure spray head 121 is positioned in the collecting groove 140, so that the phenomenon that water vapor escapes from the gap between the vertical plate 103 and the spiral feeding shaft 102 and enters the box body on the right side of the vertical plate 103 can be effectively reduced.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an oily sludge recycling drying-machine which characterized in that: the steam spraying device comprises a box body and a spiral feeding shaft arranged in the box body, wherein a vertical plate is arranged in the box body, the spiral feeding shaft stretches across two sides of the vertical plate, and a sludge inlet and a sludge outlet are formed in the upper end of the box body positioned on the left side and the right side of the vertical plate; a funnel-shaped feeding bin is arranged at the sludge inlet, a plurality of rows of steam pipes are arranged on the box body on the left side of the vertical plate, one end of each steam pipe is positioned in the box body, a high-pressure spray head is arranged on each steam pipe, the other end of each steam pipe is connected with an external steam source, and each steam pipe is provided with a switch valve; an air outlet is formed in the upper end of the box body and is connected with an inlet of a condenser through an exhaust pipe, and an outlet of the condenser is connected with an inlet of the oil-water separation device; the sludge outlet of the box body is connected with a sludge filter-pressing device, and a sewage discharge pipe of the sludge filter-pressing device is connected with an inlet of the oil-water separation device through a pipeline.

2. The oily sludge recovery dryer of claim 1, wherein: the steam pipes are arranged on two sides of the box body, and the steam discharging pipes on the two sides are distributed in a staggered mode.

3. The oily sludge recovery dryer of claim 1, wherein: and the box body on the left side of the vertical plate is provided with a sand-preventing memory.

4. The oily sludge recovery dryer of claim 1, wherein: the box on riser right side is provided with ultrasonic deodorization ware.

5. The oily sludge recovery dryer of claim 1, wherein: a collecting tank is arranged below the outlet of the feeding bin, the collecting tank is positioned above the spiral feeding shaft, a material pushing plate is arranged on the collecting tank, and a pushing cylinder for pushing the material pushing plate is arranged on the collecting tank.

6. The oily sludge recovery dryer of claim 5, wherein: one side of the collecting tank, which is close to the vertical plate, is provided with a notch and can be abutted against the vertical plate; the collecting tank is characterized in that a support is arranged on the tank body below the collecting tank, a sliding rail is arranged between the collecting tank and the support, a telescopic cylinder is arranged on the support, and a telescopic end of the telescopic cylinder is hinged to the collecting tank.