A high-temperature gas-solid filtration and separation device

Abstract

The invention discloses a high-temperature gas-solid filtering separation device which comprises a filter body (1), a pattern plate (4), a plurality of filter pipes (5), an annular feed pipe (6), a back-blowing arm (7) and a back-blowing gas storage tank (12), wherein a clean gas outlet (2) is arranged at the top of the filter body (1), and an ash bucket (3) is arranged at the bottom of the filter body (1); the pattern plate (4) is arranged in the filter body (1); the cross section of the annular feed pipe (6) is semi-circular, the annular feed pipe (6) is positioned at the upper part of the filter body (1), and one side, which contacts with the annular feed pipe (6), of the filter body (1) is provided with a plurality of gas inlet holes; the back-blowing arm (7) is arranged above the pattern plate (4), provided with a plurality of spray nozzles (8) corresponding to the filter pipes (5) and connected with a speed reducer (9) and a servo motor (10) through a back-blowing gas pipe shaft (21); and the back-blowing gas pipe shaft (21) is connected with the back-blowing gas storage tank (12). The high-temperature gas-solid filtering separation device disclosed by the invention can be used for improving the gas-solid separation efficiency, prolonging the service life of the filter pipes (5) and reducing the installation and maintenance cost of the device and is especially suitable for being used as large-sized gas-solid separation equipment.

Description

technical field

[0001] The invention relates to a filter device, in particular to a filter device for gas-solid separation of high-temperature dust-laden gas. Background technique

[0002] Gas-solid filtration and separation refers to the method of separating and purifying mixed gases containing dispersed or condensed solids. It is an important chemical unit operation. have a wide range of applications.

[0003] At present, there are many gas-solid separation equipment in the industry to filter and separate dusty gas to purify industrial gas or recycle valuable resources, mainly including: gravity settler, which has a simple structure and low cost, but the gas velocity is relatively high Low cost, huge equipment, and can only separate coarse particles above 100μm; washing and separating device, small footprint, low investment, suitable for treating gases containing harmful substances, but it requires washing liquid, so it can only be used at lower temperatures , and requir...

Examples

Embodiment 1

[0041] Such as figure 1 and figure 2 As shown, this embodiment provides a high-temperature gas-solid filtration and separation device used in the production of melamine. In the melamine production device, the temperature of the reaction gas from the catalytic reactor is about 400 ° C. The gas contains catalyst particles and by-product dust. Also contains flammable and toxic ammonia gas.

[0042] The high-temperature gas-solid filtration and separation device includes a filter body 1 with a clean gas outlet 2 on the top, an ash hopper 3 on the bottom, and a dust outlet 13 at the bottom of the ash hopper 3; the ash hopper 3 is arranged around the outside There is a loosening wind input device 15, and the loosening wind input device 15 includes 3 branch pipes evenly distributed around the ash hopper 3 and communicated with the ash hopper 3;

[0043] The flower plate 4 is erected on the upper part of the inner cavity of the filter body 1, and divides the filter body 1 into an u...

Embodiment 2

[0057] Such as figure 1 and figure 2 As shown, this embodiment provides a high-temperature gas-solid filtration and separation device used in the methanol-to-gasoline fluidized-bed process. In the methanol-to-gasoline fluidized-bed process, the temperature of the reaction product gas from the catalytic reactor is about 380°C, which is alkane , olefins, aromatics and other explosive gases, which contain catalyst dust particles, and there are carbon deposits and coking on the surface and interior of the catalyst particles.

[0058] The high-temperature gas-solid filtration and separation device is used in parallel with two separation devices. Each filter device includes a filter body 1 with a clean gas outlet 2 on the top, an ash hopper 3 on the bottom, and an ash hopper 3 at the bottom. Dust outlet 13; the outside of the ash hopper 3 is provided with a loose wind input device 15, and the loose wind input device 15 includes four branch pipes that are evenly distributed around ...

technical field

[0001] The invention relates to a filter device, in particular to a filter device for gas-solid separation of high-temperature dust-laden gas. Background technique

[0002] Gas-solid filtration and separation refers to the method of separating and purifying mixed gases containing dispersed or condensed solids. It is an important chemical unit operation. have a wide range of applications.

[0003] At present, there are many gas-solid separation equipment in the industry to filter and separate dusty gas to purify industrial gas or recycle valuable resources, mainly including: gravity settler, which has a simple structure and low cost, but the gas velocity is relatively high Low cost, huge equipment, and can only separate coarse particles above 100μm; washing and separating device, small footprint, low investment, suitable for treating gases containing harmful substances, but it requires washing liquid, so it can only be used at lower temperatures , and requir...

Examples

Embodiment 1

[0041] Such as figure 1 and figure 2 As shown, this embodiment provides a high-temperature gas-solid filtration and separation device used in the production of melamine. In the melamine production device, the temperature of the reaction gas from the catalytic reactor is about 400 ° C. The gas contains catalyst particles and by-product dust. Also contains flammable and toxic ammonia gas.

[0042] The high-temperature gas-solid filtration and separation device includes a filter body 1 with a clean gas outlet 2 on the top, an ash hopper 3 on the bottom, and a dust outlet 13 at the bottom of the ash hopper 3; the ash hopper 3 is arranged around the outside There is a loosening wind input device 15, and the loosening wind input device 15 includes 3 branch pipes evenly distributed around the ash hopper 3 and communicated with the ash hopper 3;

[0043] The flower plate 4 is erected on the upper part of the inner cavity of the filter body 1, and divides the filter body 1 into an u...

Embodiment 2

[0057] Such as figure 1 and figure 2 As shown, this embodiment provides a high-temperature gas-solid filtration and separation device used in the methanol-to-gasoline fluidized-bed process. In the methanol-to-gasoline fluidized-bed process, the temperature of the reaction product gas from the catalytic reactor is about 380°C, which is alkane , olefins, aromatics and other explosive gases, which contain catalyst dust particles, and there are carbon deposits and coking on the surface and interior of the catalyst particles.

[0058] The high-temperature gas-solid filtration and separation device is used in parallel with two separation devices. Each filter device includes a filter body 1 with a clean gas outlet 2 on the top, an ash hopper 3 on the bottom, and an ash hopper 3 at the bottom. Dust outlet 13; the outside of the ash hopper 3 is provided with a loose wind input device 15, and the loose wind input device 15 includes four branch pipes that are evenly distributed around ...

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