Regeneration dry desulfurization device

Abstract

A regeneration dry desulfurization device comprises a regeneration desulfurization tank (1) and at least one normal desulfurization tank, a plurality of desulfurization tanks (1) connected in parallel are configured according to a one-for-one-standby or multi-for-one-standby mode, the lower portions of the desulfurization tanks (1) are connected with a biogas inlet pipe (3), and the upper portions of the desulfurization tanks (1) are connected with a biogas outlet pipe (4). The device is characterized in that the lower parts of the desulfurization tanks (1) are also connected with air inlet pipes (5) for regeneration and blow-drying, the upper parts of the desulfurization tanks (1) are provided with water inlets (6) for feeding water during regeneration and air outlets (7) during regeneration, and a desulfurizer layer (2) with a columnar structure is arranged in each desulfurization tank (1).

Description

TECHNICAL FIELD

[0001] The utility model relates to a marsh gas technology especially a marsh gas desulfurization recovery technology, in particular to a regenerated dry method desulfurization device. BACKGROUND

[0002] At present, the dry method desulfurization device is generally used in the marsh gas industry, and the existing desulfurization device absorbs hydrogen sulfide under the condition of no oxygen because the marsh gas is mostly produced by anaerobic fermentation, and the desulfurizer does not have accompanying regeneration, and the adsorption capacity is small; after the dry method desulfurizer absorbs saturated hydrogen sulfide, if regeneration is needed, the oxygen content of the regeneration gas needs to be strictly controlled, otherwise high temperature will be generated and danger will occur; the traditional process needs to replace the desulfurizer, and the desulfurizer is dangerous waste; for the system with large gas volume and high hydrogen sulfide, the workload of replacing the desulfurizer is large, the labor cost is high, and the treatment cost of the dangerous waste is high. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at the problems of large workload, high labor cost and high treatment cost of dangerous waste of replacing the desulfurizer when the existing dry method desulfurization device is regenerated, and designs a regenerated dry method desulfurization device that can be regenerated on line.

[0004] The technical scheme of the utility model is:

[0005] A regenerated dry method desulfurization device, which comprises a regenerated desulfurization tank 1 and at least one normal desulfurization tank, a plurality of parallelly connected desulfurization tanks 1, each desulfurization tank is configured in one use one backup or multiple use one backup, the lower part of each desulfurization tank 1 is connected with a marsh gas inlet pipe 3, and the upper part of each desulfurization tank is connected with a marsh gas outlet pipe 4, characterized in that: the lower part of the desulfurization tank 1 is also connected with an air inlet pipe 5 for regeneration and drying, the upper part of each desulfurization tank 1 is provided with a water inlet 6 for water feeding during regeneration and an exhaust port 7 during regeneration, and a desulfurizer layer 2 in columnar structure is installed in the inside of each desulfurization tank 1.

[0006] The air inlet pipe 5 is provided with a regeneration fan 9 and an air cooler 10, the regeneration fan 9 draws air into the air cooler 10, the air is cooled, and then is sent into the corresponding desulfurization tank 1 that needs to be regenerated through the valve control.

[0007] The marsh gas inlet pipe 3 and the marsh gas outlet pipe 4 of each desulfurization tank 1 are provided with a pressure sensor 11.

[0008] The exhaust port 7 is provided with a temperature sensor 12.

[0009] The lower part of each desulfurization tank 1 is connected with a blowdown pipe 8.

[0010] The utility model has the advantages of:

[0011] The present utility model can control the regeneration temperature and on-line regeneration, and can prolong the replacement period of the desulfurizing agent by more than 3 times under the same conditions. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The device composition schematic diagram of the present utility model is shown. DETAILED DESCRIPTION

[0013] The present utility model will be further described below in combination with the drawings and examples.

[0014] The structure, proportion, size, etc. shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the limiting conditions of the implementation of the present utility model, so they do not have substantial technical significance, any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present utility model, should still fall within the scope covered by the technical content disclosed by the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and the like cited in the present specification are only for the convenience of clear understanding of the description, and are not used to limit the implementation range, the change or adjustment of the relative relationship, without substantially changing the technical content, is also regarded as the implementation scope of the present utility model.

[0015] As shown in Figure 1 .

[0016] A kind of regeneration dry method desulfurization device, it includes a regeneration desulfurization tank 1 and at least one normal desulfurization tank, multiple parallelly connected desulfurization tanks 1, each desulfurization tank is configured according to one use one backup or multiple use one backup, the lower portion of each desulfurization tank 1 is connected with marsh gas inlet pipe 3, the upper portion of them is connected with marsh gas outlet pipe 4, the lower portion of the desulfurization tank 1 is also connected with air inlet pipe 5 for regeneration and blow-drying, the upper portion of them is equipped with water inlet 6 for water inlet during regeneration and exhaust port 7 during regeneration, columnar structure desulfurizing agent layer 2 is installed in the inside of each desulfurization tank 1.The air inlet pipe 5 is installed with regeneration fan 9 and air cooler 10, air is extracted into air cooler 10 by regeneration fan 9 and is sent into corresponding desulfurization tank 1 needing regeneration after cooling by valve control.Each desulfurization tank 1 is installed with pressure sensor 11 on marsh gas inlet pipe 3 and marsh gas outlet pipe 4.The temperature sensor 12 is installed on exhaust port 7.The lower portion of each desulfurization tank 1 is connected with blow-off pipe 8.

[0017] System adsorption: marsh gas in marsh gas out;System regeneration: marsh gas is closed, water is added, air in air out;Blow-drying: drain water, air in air out.

[0018] Detailed description as follows:

[0019] The regenerative dry desulfurization device can be theoretically divided into a regenerative air system, a temperature control water system and a blow-drying system.

[0020] The regenerative air system is composed of a regenerative fan 9 and an air cooler 10 behind the fan, and the air after being pressurized and heated is cooled and then enters the desulfurization tank 1 as regenerative air.

[0021] The water filling temperature control system (water is filled through the water inlet 6) is adopted, and high temperature cannot be formed during regeneration in the system, so that the safety of regeneration is ensured.

[0022] The aeration regeneration is adopted, the regenerative air contacts the desulfurizing agent in the bed layer, the regeneration efficiency is high, compared with the regeneration method of drying the desulfurizing agent in the air, the efficiency is higher, and the desulfurizing agent in the columnar desulfurizing agent can be regenerated.

[0023] After the desulfurizing agent is regenerated, the system enters the blow-drying process, the desulfurizing agent is blow-dried, and the adsorption performance of the desulfurizing agent is recovered.

[0024] The utility model discloses high safety.

[0025] Adsorption process: low pressure alarm, low-low interlock (temporary-3kpa can be set) stop biogas system to the top PT101A, PT102A of desulfurization tank.

[0026] Regeneration process: high temperature alarm, high-high interlock stop regenerative air to the TE002 temperature of regenerative air cooling gas.

[0027] High pressure alarm, high-high interlock stop regenerative air to the top PT101A, PT102A of desulfurization tank.

[0028] High temperature alarm, high-high interlock stop regenerative air to the temperature TE101, TE102 arranged at the top of desulfurization tank.

[0029] The above embodiment is only the preferred implementation mode of the utility model, and it should be pointed out that: for ordinary skilled person in the art, on the premise of not departing from the principle of the utility model, a plurality of improvements and equivalent replacements can be made, and the technical scheme of the utility model claim is improved and replaced, and all fall into the protection scope of the utility model.

[0030] The part not involved in the utility model is the same as the prior art or can be realized by using the prior art.

Claims

1. A regenerative dry desulphurization device comprising a regenerative desulphurization tank (1) and at least one normal desulphurization tank, a plurality of desulphurization tanks (1) connected in parallel, each desulphurization tank being arranged in a one-for-one or multiple-for-one backup configuration, the lower part of each desulphurization tank (1) being connected to a biogas inlet pipe (3) and the upper part of each desulphurization tank (1) being connected to a biogas outlet pipe (4), characterized in that: The lower part of the desulfurization tank (1) is connected with an air inlet pipe (5) for regeneration and drying, the upper part is provided with a water inlet (6) for water inlet during regeneration and an exhaust outlet (7) during regeneration, and a cylindrical desulfurizer layer (2) is installed in the interior of each desulfurization tank (1). ​ 2. The regenerative dry desulfurization device according to claim 1, characterized by: A regeneration fan (9) and an air cooler (10) are installed on the air inlet pipe (5), the regeneration fan (9) draws air into the air cooler (10) for cooling, and then the air is sent into the corresponding desulfurization tank (1) to be regenerated through valve control.

3. The regenerated dry desulfurization device according to claim 1, characterized by: A pressure sensor (11) is installed on the biogas inlet pipe (3) and the biogas outlet pipe (4) of each desulfurization tank (1).

4. The regenerated dry desulfurization device according to claim 1, characterized by: A temperature sensor (12) is installed on the exhaust outlet (7).

5. The regenerated dry desulfurization device according to claim 1, characterized by: The lower part of each desulfurization tank (1) is connected with a sewage pipe (8).

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