CN215876773U - Packing-saving type two-stage gas treatment device - Google Patents

Abstract

The utility model relates to a fixed bed treatment device. The conventional fixed bed treatment device adopts a single-stage treatment device, and all fillers are integrally replaced after penetration. The utility model discloses a two-stage treatment device connected in series, which comprises an air inlet main pipe A, an air inlet switching valve B, an air inlet switching valve C, an adsorption unit D, an adsorption unit E, an exhaust switching valve F, an exhaust switching valve G and an exhaust main pipe H, wherein a treatment pipeline system formed by the two-stage treatment device is similar to a Wheatstone bridge. There are two routes for gas passage, and the packing in process units D and E can be replaced individually. The device can not only make full use of the processing capacity of the processing agent, but also ensure that the processing bed is not penetrated and ensure the purification efficiency of the processing device. When replacing a spent treatment agent, it is only necessary to replace the spent treatment agent with a new or regenerated treatment agent and to change the gas passage path by means of the control valve so that the new treatment stage is located at the site of the secondary treatment.

Description

Packing-saving type two-stage gas treatment device

Technical Field

The utility model relates to a gas fixed bed treatment device, and further relates to a gas adsorption purification device.

Background

The conventional application of the existing gas treatment device is a single-stage treatment device, and all fillers are integrally replaced after the existing gas treatment device fails.

Disclosure of Invention

The utility model discloses a two-stage gas processing apparatus of series connection, see figure 1, including inlet manifold A, inlet diverter valve B, inlet diverter valve C, processing unit D, processing unit E, exhaust diverter valve F, exhaust diverter valve G and exhaust manifold H. The components form a gas processing passage shaped like a Wheatstone bridge, the air inlet manifold A and the air outlet manifold H are equivalent to two poles of a power supply, the two air inlet switching valves B, C and the two air outlet switching valves F, G are equivalent to 4 resistors, and the two processing units D, E are connected in series and are positioned at the position of an ammeter. There are two routes for treating gases: 1) A-B-D-E-G-H, 2) A-C-E-D-F-H. The fillers in treatment units D and E are replaced individually. The treatment unit D, E corresponds to a fixed treatment bed. When the device works, the device works in the way 1, the treating agent of the treating unit D loses efficacy, and the treating unit E does not lose efficacy, so that the treating effect of the exhaust gas is ensured. The treating agent in the treating unit D was replaced, and the gas passage route was switched to the mode 2 until the treating agent in the treating unit E became ineffective. The treatment agent in the treatment unit E was replaced, and the gas passage was switched to the mode 1, and this was repeated.

The fixed bed gas treatment device is suitable for a regeneration adsorption device using an adsorption material capable of desorbing regeneration and a single adsorption device using a disposable adsorption material, and is also suitable for a chemical absorption device using a solid chemical absorption material, a chemical treatment device using a solid chemical reactant and a chemical catalytic device using a solid catalyst.

The device has the advantages of fully utilizing the treatment capacity of the treatment agent, avoiding resource waste, ensuring that the filler of the treatment bed is not invalid and ensuring the treatment and purification efficiency of the treatment device. Further, when the exhausted treating agent is replaced, only the saturated treating agent needs to be replaced by a new or regenerated treating agent, and the newly replaced treating agent can be adjusted to the position of the second-stage treatment only through the operation of the 4 control valves, so that the operation of replacing the treating agent is simplified.

The present invention will be further described below by taking a fixed bed gas adsorption apparatus as an example.

Drawings

FIG. 1 is a schematic diagram of a comprehensive process of a filler-saving two-stage gas treatment device

FIG. 2 is a schematic view of a working process of a gas adsorption apparatus

FIG. 3 is a second schematic flow chart of the gas adsorption device

FIG. 4 is a schematic diagram of an implementation structure of a packing-saving type two-stage adsorption device

FIG. 5 shows one of the gas flow paths of the embodiment of FIG. 4

FIG. 6 shows the second air flow path of the embodiment shown in FIG. 4

FIG. 7 is a schematic diagram of an implementation structure of a two-stage adsorption apparatus with a combination of pre-treatment and post-treatment processes in an application of a packing-saving type

Detailed Description

Example 1Two-stage adsorption device of independent adsorption unit

See figures 2-3. The device comprises an air inlet manifold A1, an air inlet switching valve B1, an air inlet switching valve C1, an adsorption unit D1, an adsorption unit E1, an exhaust switching valve F1, an exhaust switching valve G1 and an exhaust manifold H1. Where adsorption units D1 and 1E correspond to two separate fixed bed adsorbers.

When the device works, firstly, the device works in a way of route 1) A1-B1-D1-E1-G1-H1, the adsorbent of the adsorption unit D1 is saturated firstly, and the adsorption unit E1 is not penetrated yet. Changing the adsorbent in the adsorption unit D1, switching the gas passing path to the mode 2) A1-C1-E1-D1-F1-H1 until the adsorbent in the adsorption unit E1 is saturated, at which time, changing the adsorbent in the adsorption unit E1, and switching the gas passing path to the mode 1), and repeating the steps.

Example 2Compact matrix type two-stage adsorption device

The adsorption apparatus of example 1, in which the adsorption units D1 and E1 were replaced with a plurality of parallel fixed beds I and J, the gas line connected between the two adsorption units was replaced with a grid plate K dividing the two adsorption stage units so that the gas sequentially passed through the parallel fixed beds of the adsorption units D and E, and the valves B1, C1, E1, and F1 were provided as two sets of linked switching valves L and M, was converted into a more practical compact matrix type two-stage adsorption apparatus. The parallel fixed bed can be arranged in an adsorbent drawer convenient to replace, and the operation process of replacing the adsorbent can be further simplified. The structure can also greatly reduce the wind resistance of the device.

Example 3Combination of compact matrix type two-stage adsorption device and front-back treatment process

The advantage of a compact matrix-type two-stage adsorption device for VOCs gas removal when combined with a front and rear treatment device, such as a soot filter N, and a post-treatment device, such as a hydrogen sulfide catalytic oxidizer 0, is more pronounced.

Claims (4)

1. A gas fixed bed treatment device is characterized by comprising a gas inlet main pipe A, a gas inlet switching valve B, a gas inlet switching valve C, a treatment unit D, a treatment unit E, an exhaust switching valve F, an exhaust switching valve G and an exhaust main pipe H, wherein the gas inlet main pipe A and the exhaust main pipe H form a set of gas treatment passage in a shape like the Chinese character 'ri', the gas inlet main pipe A and the exhaust main pipe H are connected with an upper frame and a lower frame in the shape like the Chinese character 'ri', the two treatment units D, E are connected in series and positioned at a transverse position in the middle of the Chinese character 'ri', and the two gas inlet switching valves B, C and the two exhaust switching valves F, G are respectively positioned at the upper half and the lower half of the frames at two sides in the shape like the Chinese character 'ri'; there are two routes for treating gases: 1) A-B-D-E-G-H, 2) A-C-E-D-F-H; the fillers in treatment units D and E are replaced individually.

2. A fixed bed gas treatment apparatus as set forth in claim 1 wherein said treatment apparatus is an adsorption treatment apparatus.

3. A fixed gas bed processing apparatus as set forth in claim 2 wherein the adsorption units D and E are a plurality of parallel fixed beds, a grid plate for dividing two adsorption stage elements is provided between the two adsorption units, and the gas sequentially passes through the parallel fixed beds of the adsorption units D and E, and the valves B, C, E, F are two sets of switching valves in linkage.

4. A fixed bed gas treatment unit as claimed in claim 3 wherein said parallel fixed beds are adsorbent drawers.

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