A primary dust collector structure for dry coke quenching

Abstract

The present invention relates to a dry coke quenching primary dust collector structure, comprising a dust collector body, one end of the dust collector body is an air inlet, and the other end is an air outlet; the bottom surface of the dust collector body is composed of an inlet side horizontal section, an inlet side inclined section, an ash discharge port, an outlet side inclined section and an outlet side horizontal section in sequence from one end of the air inlet to one end of the air outlet; the outlet side horizontal section is not set lower than the inlet side horizontal section, and the ash discharge port is located below the outlet side horizontal section and the inlet side horizontal section; a step section is provided on the top of the dust collector body; the step section is tilted as a whole, and its bottom end is located above the ash discharge port, and the upper end of the step section extends toward the air inlet end of the dust collector body. In the present invention, the step section has the function of a large retaining wall and has a stable structure; the inlet side horizontal section is short or not provided, which can reduce the accumulation of coke powder, reduce system resistance, and save energy while achieving the coke powder separation effect.

Description

Technical Field

[0001] The invention relates to the technical field of dry coke quenching dust removal, and in particular to a dry coke quenching primary dust collector structure. Background Art

[0002] CDQ refers to a method of quenching coke by using inert gas to cool down red coke. During the CDQ process, circulating gas is blown in from the hood and cone bucket at the bottom of the cooling chamber of the CDQ furnace. After sufficient heat exchange with the coke, the temperature rises and the gas is sent to the CDQ waste heat boiler to produce steam. The circulating gas coming out of the CDQ furnace carries a lot of dust and is corrosive. A primary dust collector is often installed between the CDQ furnace and the CDQ waste heat boiler. The principle of gravity dust removal is used to separate the large coke powder in the circulating gas to ensure the safe and stable operation of the CDQ waste heat boiler and extend its service life.

[0003] Conventional primary dust collectors can be divided into two structural forms according to whether they are equipped with a large retaining wall: the primary dust collector with a large retaining wall has a good dust removal effect, but the large retaining wall is easy to collapse, affecting normal production; the primary dust collector without a large retaining wall has a relatively poor dust removal effect, and the horizontal section at one end of the dust collector air inlet is long, which is easy to accumulate coke powder. Therefore, it is urgent to develop a primary dust collector structure that can reduce coke powder accumulation and have a good dust removal effect. Summary of the invention

[0004] The present invention provides a primary dust collector structure for dry coke quenching. The stepped section arranged on the top of the dust collector body has the function of a large retaining wall and has a stable structure. The horizontal section on the inlet side is shorter or not arranged, which can reduce the accumulation of coke powder, reduce system resistance and save energy while achieving the coke powder separation effect.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A dry coke quenching primary dust collector structure comprises a dust collector body, one end of the dust collector body is an air inlet, and the other end is an air outlet; the bottom surface of the dust collector body is composed of an inlet side horizontal section, an inlet side inclined section, an ash discharge port, an outlet side inclined section and an outlet side horizontal section in sequence from the air inlet end to the air outlet end; the outlet side horizontal section is arranged not lower than the inlet side horizontal section, and the ash discharge port is located below the outlet side horizontal section and the inlet side horizontal section; a step section is arranged on the top of the dust collector body; the step section is arranged as a whole with an inclination, and its bottom end is located above the ash discharge port, and the upper end of the step section extends toward the air inlet end of the dust collector body.

[0007] The step section is composed of a multi-layer vault structure, and the height of each layer of the vault structure decreases layer by layer from the air inlet end to the air outlet end to form a staggered structure.

[0008] The length of the inlet side horizontal section is 0 to 500 mm.

[0009] The inclination of the outlet side inclined section is not less than the inclination of the inlet side inclined section.

[0010] The cross-sectional shape of the ash discharge port is circular or rectangular.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1) The structure is simple and stable, the dust removal effect is good, and the problem of easy collapse of the large retaining wall in the primary dust collector is solved.

[0013] 2) The coke powder accumulation on the inlet side is effectively reduced, the system resistance is smaller, and it is beneficial to save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a primary dust collector for dry coke quenching according to the present invention.

[0015] Figure 2 yes Figure 1 A view in the figure.

[0016] In the figure: 1. Step section 2. Horizontal section on the inlet side 3. Inclined section on the inlet side 4. Horizontal section on the outlet side 5. Inclined section on the outlet side 6. Ash discharge port DETAILED DESCRIPTION

[0017] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0018] like Figure 1 , Figure 2 As shown, a dry quenching primary dust collector structure of the present invention comprises a dust collector body, one end of the dust collector body is an air inlet, and the other end is an air outlet; the bottom surface of the dust collector body is composed of an inlet side horizontal section 2, an inlet side inclined section 3, an ash discharge port 6, an outlet side inclined section 5 and an outlet side horizontal section 4 in sequence from the air inlet end to the air outlet end; the outlet side horizontal section 4 is arranged not lower than the inlet side horizontal section 2, and the ash discharge port 6 is located below the outlet side horizontal section and the inlet side horizontal section 2; a step section 1 is arranged on the top of the dust collector body; the step section 1 is arranged as a whole inclined, and its bottom end is located above the ash discharge port 6, and the upper end of the step section 1 extends to the air inlet end of the dust collector body.

[0019] The step section 1 is composed of a multi-layer vault structure, and the height of each layer of the vault structure decreases layer by layer from the air inlet end to the air outlet end, forming a staggered structure.

[0020] The length of the inlet side horizontal section 2 is 0 to 500 mm.

[0021] The inclination of the outlet-side inclined section 5 is not less than the inclination of the inlet-side inclined section 3 .

[0022] The cross-sectional shape of the ash discharge port 6 is circular or rectangular.

[0023] After the dry coke quenching primary dust collector structure described in the present invention is applied, the dry coke quenching circulating gas carrying dust enters the primary dust collector from the dry coke quenching furnace, the dust hits the step section at high speed and falls downward, and is then discharged from the ash discharge port 6 at the bottom, realizing gravity dust removal; the circulating gas after dust removal enters the subsequent dry coke quenching waste heat boiler to produce steam.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A primary dust collector structure for dry coke quenching, comprising a dust collector body, one end of the dust collector body being an air inlet and the other end being an air outlet; characterized in that: The bottom surface of the dust collector body is composed of an inlet side horizontal section, an inlet side inclined section, an ash discharge port, an outlet side inclined section and an outlet side horizontal section in sequence from one end of the air inlet to one end of the air outlet; the outlet side horizontal section is not set lower than the inlet side horizontal section, and the ash discharge port is located below the outlet side horizontal section and the inlet side horizontal section; a step section is provided on the top of the dust collector body; the step section is tilted as a whole, and its bottom end is located above the ash discharge port, and the upper end of the step section extends toward the air inlet end of the dust collector body; the step section is composed of a multi-layer arch structure, and the height of each layer of the arch structure decreases layer by layer from one end of the air inlet to one end of the air outlet, forming a staggered structure.

2. A CDQ primary dust collector structure according to claim 1, characterized in that: The length of the inlet side horizontal section is 0 to 500 mm.

3. The primary dust collector structure for dry coke quenching according to claim 1 is characterized in that: The inclination of the outlet side inclined section is not less than the inclination of the inlet side inclined section.

4. The CDQ primary dust collector structure according to claim 1, characterized in that: The cross-sectional shape of the ash discharge port is circular or rectangular.

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