WO2016201873A1

WO2016201873A1 - Spiral three-dimensional type apparatus for conveying and cooling oil coke or pitch, design method therefor, and use thereof

Info

Publication number: WO2016201873A1
Application number: PCT/CN2015/094574
Authority: WO
Inventors: 李苏安; 邓清宇; 王坤朋
Original assignee: 北京中科诚毅科技发展有限公司
Priority date: 2015-06-17
Filing date: 2015-11-13
Publication date: 2016-12-22
Also published as: CN104925453B; CN104925453A

Abstract

A spiral three-dimensional type apparatus for conveying and cooling oil coke or pitch, a design method therefor, and a use thereof. An existing plane-type oil coke or pitch conveying mode is changed to a spiral three-dimensional type conveying mode. One end of a conveying belt (1) is connected to a discharging pipeline (3) for oil coke (100 to 350°C) after being cooled, and the other end of the conveying belt (1) is connected to a discharging hopper (5). The conveying belt (1) is arranged in a spiral descending mode, and the spiral descending angle (α) of the conveying belt (1) ranges from 5 to 30°. A cooling water pipeline is arranged inside the conveying belt (1) to accelerate cooling molding of oil coke and pitch. The apparatus can reduce the occupied space of a molding area for oil coke or pitch, and improves the usage rate of factory unit area.

Description

Spiral three-dimensional oil coal coke or asphalt conveying and cooling device, design method and use thereof

Technical field

The invention relates to a cooling device for oil coal char and asphalt, in particular to a spiral three-dimensional oil coal coke or asphalt conveying and cooling device, belonging to the field of oil coal mixed oil and petroleum constant/reduced distillation.

Background technique

Oil coal char is the product obtained after the hydrocracking of the slurry coal in the oil-coal mixing process, and the asphalt is a product obtained by hydrocracking of vacuum residue, atmospheric residue or coal tar. It is composed of about 5% to 40%, and is composed of an aromatic compound having three or more benzene rings and an oxygen-containing, nitrogen-containing, sulfur-containing heterocyclic compound and a small amount of high-molecular carbon material.

In the field of oil-coal mixed oil and petroleum constant/reduced distillation, the residual oil coal char and the asphalt at the bottom of the tower are cooled down to 100-350 ° C, and further cooling is required during the transportation to solidify and shape, which is convenient for storage and transport. At present, the factory mainly adopts the plane transportation mode. The cooling to the normal temperature requires a long transportation distance, while the plane layout oil coal char and asphalt conveyor belt will occupy a large factory area, resulting in serious waste of ground space in the plant area and low utilization rate per unit area. In addition, the trend of heavy oil quality and inferiority of crude oil in the world has intensified. At the same time, the oil-coal mixing technology has been gradually promoted and applied on a large scale. The residual oil coal coke and bitumen output of oil-coal mixed oil and petroleum vacuum distillation have gradually increased. The transportation volume of oil coal char and asphalt will gradually increase, and the problem of low utilization rate per unit area of the factory will be further aggravated.

Summary of the invention

The invention provides a spiral three-dimensional oil coal char or asphalt conveying with small floor space due to the serious waste of ground space in the plant area and the low utilization rate per unit area in the process of oil coal char and asphalt plane transportation existing in the prior art. The cooling device is such that the residual coal char or bitumen at the bottom of the tower is cooled and formed at the end of the transportation.

The technical solution of the invention:

The utility model relates to a spiral three-dimensional oil coal char or asphalt conveying and cooling device, which comprises a conveyor belt for conveying oil coal char or asphalt, characterized in that the conveyor belt is arranged in a spiral three-dimensional descending manner, and the upper end is a feeding port, and the connection is initially cooled. a coal coal coke or an asphalt discharge line, the bottom end is a discharge port, and the temperature of the preliminary cooled oil coal coke or pitch is 100-350 ° C, and is cooled to the bottom end of the conveyor belt or near the bottom end. Normal temperature.

Preferably, the conveyor belt has at least one circulating cooling water line, the circulating cooling water inlet temperature being < 42 °C.

A guardrail may be provided on both sides of the conveyor belt.

The helix angle of the conveyor belt is preferably from 5 to 30 degrees; most preferably 15 degrees.

The width of the conveyor belt is preferably 0.5 to 5 m, and the length is preferably 10 to 2000 m; when there is a circulating cooling water line, the width of the conveyor belt may further preferably be 0.5 to 3 m, and the length is preferably 10 to 500 m.

The conveying speed of the conveyor belt ranges from 0.1 to 3 m/s.

A cargo transport device is parked under the lower hopper.

The above-mentioned spiral three-dimensional oil coal coke or asphalt conveying and cooling device is used for heavy oil hydrogenation, coal direct liquefaction, oil coal mixing, solvent deasphalting process, asphalt, oil coal coke conveying, cooling forming, The heavy oil includes one or more combinations of heavy crude oil, residual oil, catalytic oil slurry, deoiled asphalt, coal tar; the coal includes one or more combinations of lignite, bituminous coal, non-stick coal; The ratio of oil to coal in the mixing process ranges from 97:3 to 40:60.

And the above-mentioned design method of the spiral three-dimensional oil coal char or asphalt conveying and cooling device.

Advantageous technical effects of the present invention:

The utility model relates to a spiral three-dimensional oil coal coke or asphalt conveying and cooling device, wherein the conveyor belt is arranged in a spiral three-dimensional descending manner, which increases the transportation distance of the oil coal char or the asphalt to increase the cooling time, and can make the oil coal when the transportation ends Coke or asphalt is cooled to form while saving floor space. Compared with the existing planar conveying method, the spiral three-dimensional conveying and cooling device of the invention can reduce the footprint of the molding device by more than 70%, greatly saving the floor space of the factory, and the utilization rate per unit area of the factory is increased by 3 to 15 times. .

The angle, size and conveying speed of the conveyor belt are further preferably combined with the actual cooling rate and flow speed of the oil coal char or the asphalt. The cooling water pipeline can also be arranged inside the conveyor belt to accelerate the cooling forming speed of the oil coal char and the asphalt.

Guard rails on both sides of the conveyor belt prevent oil coal char or bitumen from slipping off the side during transport.

DRAWINGS

1 is a schematic view showing a spiral three-dimensional cooling and conveying device for oil coal char and asphalt according to an embodiment of the present invention;

Figure 2 is a schematic view showing the arrangement of the cooling water pipes inside the conveyor belt in the embodiment.

The labels in the figure are listed as follows:

1-conveyor belt, 2-feeding port, 3-outlet line, 4-outlet port, 5-down hopper;

A-conveyor belt and oil coal coke transfer line connection; B-conveyor belt and lower hopper connection; α-conveyor belt spiral down angle.

detailed description

In order to more clearly understand the technical content of the present invention, it will be further described below in conjunction with the accompanying drawings and specific embodiments.

1 is a schematic view of an embodiment of a spiral three-dimensional oil coal char or asphalt conveying and cooling device according to the present invention. As shown in FIG. 1, the embodiment includes a conveyor belt 1 for conveying oil coal char or pitch, the conveyor belt 1 is a spiral three-dimensional descending arrangement, and the upper end has an upper feed port 2, and is initially cooled with oil coal char or asphalt. The material line 3 is connected, the bottom end is the discharge port 4, and has a spiral descending inclination angle α, which is 15° compared with the horizontal plane. The width of the conveyor belt 1 is 2.5 m, the length is 400 m, and the conveying speed is 1.0 m/s. . The apparatus further includes a lower hopper 5 connected to the bottom end of the conveyor belt 1, the lower hopper 5 being an open cylindrical container at the upper end, having a conical bottom, an outlet at the center of the bottom, and a transport vehicle parked in the outlet direction.

Figure 2 is a schematic view of the arrangement of the cooling water pipes inside the conveyor belt. As shown in FIG. 2, the conveyor belt 1 has four circulating cooling water lines, and the circulating cooling water inlet temperature is 30 °C.

In addition, the conveyor belt 1 also has guard rails (not shown) on both sides to prevent oil coal char or asphalt from slipping off from the side during transportation.

The above conveyor belt transports the coal char and cools the molding process as follows:

After the oil coal coke is initially cooled to 300 ° C, it is sent from the discharge line 3 to the junction A of the conveyor belt and the oil coal coke delivery line. The spiral gravity flow along the conveyor belt 1 drops. During the descending process, the natural cooling of the oil coal char and the cooling cooling of the circulating cooling water cool down. When the oil coal char is transported to the junction B of the conveyor belt and the lower hopper, the temperature is lowered to the normal temperature, the oil coal char is formed, and falls into the lower hopper 5. After being detached to the truck by the lower hopper 5, it is transported to the oil coal coke storage area or directly sold outside the factory.

It can be seen from the above embodiments that the spiral three-dimensional oil coal coke or asphalt conveying and cooling device of the invention can be applied to asphalt produced by heavy oil hydrogenation, coal direct liquefaction, oil coal mixing and solvent deasphalting processes. , oil coal coke delivery, cooling molding. It can save space and achieve the function of conveying and cooling molding. It can reduce the floor space of the conveying and cooling forming device by more than 70%, which greatly saves the floor space of the factory and increases the unit area utilization rate by 3 to 15 times.

In addition, the device can also be used for liquid cooling molding processes such as liquid cooling of sulfur recovery.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present invention. All should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

The utility model relates to a spiral three-dimensional oil coal char or asphalt conveying and cooling device, which comprises a conveyor belt for conveying oil coal char or asphalt, characterized in that the conveyor belt is arranged in a spiral three-dimensional descending manner, and the upper end is a feeding port, and the connection is initially cooled. a coal coal coke or an asphalt discharge line, the bottom end is a discharge port, and the temperature of the preliminary cooled oil coal coke or pitch is 100-350 ° C, and is cooled to the bottom end of the conveyor belt or near the bottom end. Normal temperature.
A spiral three-dimensional oil coal char or asphalt conveying and cooling device according to claim 1, wherein the conveyor belt has a width of 0.5 to 5 m and a length of 10 to 2000 m.
A spiral three-dimensional oil coal char or asphalt conveying and cooling device according to claim 1, wherein the conveyor belt has at least one circulating cooling water line, and the circulating cooling water inlet temperature is ≤ 42 °C.
A spiral three-dimensional oil coal char or asphalt conveying and cooling device according to claim 3, wherein the conveyor belt has a width of 0.5 to 2 m and a length of 10 to 500 m.
A spiral three-dimensional oil coal char or asphalt conveying and cooling device according to any one of claims 1 to 4, characterized in that the conveyor belt is provided with guardrails on both sides.
A spiral three-dimensional oil coal char or asphalt conveying and cooling device according to any one of claims 1 to 4, characterized in that the conveyor belt has a spiral lowering angle of 5 to 30°.
A spiral three-dimensional oil coal char or asphalt conveying and cooling device according to claim 6, wherein the conveyor belt has a spiral lowering angle of 15°.
A spiral three-dimensional oil coal char or asphalt conveying and cooling device according to any one of claims 1 to 4, characterized in that the conveying speed of the conveyor belt ranges from 0.1 to 3 m/s.
The use of a spiral three-dimensional oil coal coke or asphalt conveying and cooling device according to any one of claims 1-8, characterized in that it is used for heavy oil hydrogenation, coal direct liquefaction, oil coal mixing or solvent deasphalting process The bitumen or oil coal coke produced in the middle is transported and cooled; the heavy oil includes one or more combinations of heavy crude oil, residual oil, catalytic oil slurry, deoiled asphalt, coal tar; the coal includes lignite, bituminous coal, One or more combinations of non-sticky coal; the ratio of oil to coal in the oil-coal mixing process ranges from 97:3 to 40:60.
The utility model relates to a spiral three-dimensional oil coal char or asphalt conveying and cooling device design method, which is characterized in that a conveyor belt for transporting oil coal char or asphalt is designed as a spiral three-dimensional descending arrangement, having a spiral descending angle of 5-30°, and the upper end is advanced. a feed port, connected to the initially cooled oil coal coke or asphalt discharge line, the bottom end is a discharge port, and the temperature of the preliminary cooled oil coal coke or pitch is 100-350 ° C, and is delivered to the bottom end of the conveyor belt Cool to room temperature near or near the bottom.