CN110038391A - Powdered activated coke moving bed desulfurizer - Google Patents

Abstract

The invention provides a powder active coke moving bed desulfurization device. The device includes a moving bed desulfurization unit, and the moving bed desulfurization unit includes: a moving bed body, the moving bed body has a cavity, and the moving bed body is also provided with a gas inlet to be desulfurized and a desulfurization gas outlet arranged opposite to the gas inlet to be desulfurized. In the flow direction, the cavity is divided into an airflow entry section, a filler filling section and an airflow discharge section in turn. The airflow entry section is provided with a gas inlet to be desulfurized and a powder activated coke injection port, and the desulfurized gas outlet is set in the airflow discharge section. Filled with inert bed material and/or granular activated coke, and the particle size of both inert bed material and granular activated coke is larger than that of powdery activated coke. Using the device to desulfurize the gas in a moving bed of powdered activated coke can significantly increase the residence time of powdered activated coke in the system, so that the sulfur content of powdered activated coke can be more fully utilized, and the desulfurization efficiency can be improved.

Description

Powder activated coke moving bed desulfurization device

technical field

The present invention relates to the technical field of gas desulfurization, in particular to a powder activated coke moving bed desulfurization device.

Background technique

Semi-dry desulfurization technology is an important technology for power plants to reduce water consumption and solve zero discharge of desulfurization wastewater from limestone-gypsum desulfurization technology. and Compared with granular activated coke, powdered activated coke (particle size less than or equal to 200 μm) has the advantages of large specific surface area, simple production process and low cost. For granular activated coke, the moving bed desulfurization process can ensure the residence time of the activated coke, but the initial charge of the activated coke is large; for powdery activated coke, the circulating fluidized bed semi-dry desulfurization process can ensure sufficient gas-solid contact , it is beneficial to improve the desulfurization efficiency, but this technology cannot effectively guarantee the residence time of the activated coke in the system, resulting in that the activated coke sulfur capacity cannot be fully used.

Fully ensuring the residence time of powdered activated coke in the desulfurization system has become the key to popularizing powdered activated coke desulfurization technology. residence time within.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a powdered activated coke moving bed desulfurization device to solve the problem that the powdery activated coke cannot make full use of its sulfur capacity due to the short residence time of the powdered activated coke in the desulfurization system in the prior art.

In order to achieve the above object, according to one aspect of the present invention, a powder activated coke moving bed desulfurization device is provided, which includes a moving bed desulfurization unit, and the moving bed desulfurization unit includes: a moving bed body, the moving bed body has a cavity, and the moving bed The bed body is also provided with a gas inlet to be desulfurized and a desulfurized gas outlet opposite to the inlet of the gas to be desulfurized. According to the gas flow direction, the cavity is divided into an airflow entry section, a packing filling section and an airflow discharge section in turn. The desulfurization gas inlet and the powdery active coke spray inlet, the desulfurization gas outlet is arranged in the gas flow discharge section, and the filler filling section is filled with inert bed material and/or granular activated coke, and the particle size of the inert bed material and granular activated coke is larger than that of the powdery active coke Active coke.

Further, according to the gas flow direction, the gas flow inlet section includes a gas flow inlet section arranged close to the inlet of the gas to be desulfurized and a gas flow expanding section connected to it and arranged near the filler filling section.

Further, the airflow inlet section is provided with at least one powder activated coke spray inlet.

Further, the moving bed desulfurization unit also includes a powdery active coke spray device, the powdery active coke spray device extends through the outer wall of the moving bed body to the inside of the airflow gradually expanding section, and the powdery active coke spray device is provided with a plurality of powdery active coke spray devices. Active coke injection port.

Further, the bottom of the airflow gradually expanding section is also provided with a powdery active coke dropping bin for receiving the powdery active coke falling from the inside of the airflow gradually expanding section due to gravity.

Further, according to the gas flow direction, the gas flow discharge section includes a gas flow constriction section arranged near the filler filling section and a gas flow outlet section arranged near the desulfurized gas outlet.

Further, the moving bed desulfurization unit further includes: a first airflow uniform distribution plate, which is arranged between the airflow entry section and the packing filling section; and a second airflow uniform distribution board, which is arranged between the packing filling section and the airflow discharge section.

Further, an inlet for inert bed material and/or granular activated coke is provided at the top of the packing section, and an outlet for inert bed material and/or granular activated coke is provided at the bottom.

Further, the moving bed desulfurization unit further includes: a first water distribution and humidification unit, which is arranged in a position close to the top of the filler filling section; and a second water distribution and humidification unit, which is arranged in the airflow inlet section.

Further, the moving bed desulfurization unit further includes a first bag filter, the inlet of the first bag filter is connected to the desulfurization gas outlet, and the first bag filter also has a first gas phase outlet and a first solid phase outlet.

Further, the powder activated coke moving bed desulfurization device also includes a separation unit, and the separation unit includes: a separation bed, which has a bed material inlet, a fluidization gas inlet, a fluidization gas outlet and a bed material outlet, and the bed material inlet and the filler filling section are connected. The outlet is connected to the second bag filter, the inlet of which is connected to the fluidizing gas outlet, and the second bag filter also has a second gas phase outlet and a second solid phase outlet, and the second gas phase outlet is connected to the fluidizing gas inlet; bed material Storage bin, connected to the bed material outlet.

Further, the bottom of the airflow gradually expanding section is also provided with a powdery active coke blanking bin, which is used to receive the powdery active coke that falls due to gravity inside the airflow gradually expanding section; the bottom of the powdery active coke blanking bin is also provided with a discharge material. The bed material inlet of the separation bed is also connected with the discharge port and the first solid phase outlet of the first bag filter.

Further, the moving bed desulfurization unit also includes at least one powdery active coke supply bin, the outlet of the powdery active coke supply bin is connected to the powdery active coke spray inlet, and the inlet of the powdery active coke supply bin is connected to the second bag filter. The second solid phase outlet is connected.

Further, the moving bed desulfurization unit further includes a bed material supply bin, the inlet of the bed material supply bin is connected with the outlet of the bed material storage bin, and the outlet of the bed material supply bin is connected with the inlet at the top of the packing section.

Further, the powdered activated coke moving bed desulfurization device further includes a powdered activated coke withdrawal device, which is connected with the pipeline between the inlet of the powdered activated coke supply bin and the second solid phase outlet.

Further, the separation unit further includes a circulating fan, which is arranged on the pipeline connecting the second gas phase outlet with the fluidizing gas inlet.

Using the powder activated coke moving bed desulfurization device provided by the present invention to carry out the powder activated coke moving bed desulfurization treatment on the gas can significantly increase the residence time of the powder activated coke in the system, so that the powder activated coke can be more fully utilized. Sulfur capacity, improve desulfurization efficiency.

Description of drawings

The accompanying drawings forming a part of the present application are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

FIG. 1 shows a schematic structural diagram of a powdered activated coke moving bed desulfurization device according to an embodiment of the present invention; and

FIG. 2 shows the distribution diagram of powdery active coke inside the moving bed of the powdery active coke moving bed desulfurization device in FIG. 1 obtained by simulation calculation during the actual desulfurization work.

Wherein, the above-mentioned drawings include the following reference signs:

1. Moving bed desulfurization unit; 2. Separation unit; 3. Powder activated coke exit device;

10. Moving bed body; 11. Air flow entry section; 111, Air flow inlet section; 112, Air flow gradually expanding section; 113, Powder activated coke blanking bin; 12, Filler filling section; 13, Air flow discharge section; 131, Air flow Tapering section; 132, air outlet section; 14, first air distribution plate; 15, second air distribution plate; 16, first water distribution humidification unit; 17, second water distribution humidification unit; 18, The first bag filter; 19, the powder active coke supply bin; 20, the powder active coke injection device; 30, the bed material supply bin; 21, the separation bed; 22, the second bag filter; 23, the bed material storage bin ; 24. Circulating fan; 31. Powdered active coke exits the warehouse;

101, the first valve; 102, the second valve; 103, the third valve; 104, the fourth valve; 105, the fifth valve; 106, the sixth valve; 107, the seventh valve; 108, the eighth valve; 109, The ninth valve; 201, the tenth valve; 202, the eleventh valve; 203, the twelfth valve; 301, the thirteenth valve; 302, the fourteenth valve.

Detailed ways

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

As described in the background art section, the residence time of powdered activated coke in the desulfurization system is short in the prior art, and its sulfur capacity cannot be fully utilized, which affects the desulfurization efficiency.

In order to solve the above problems, the present invention provides a powder activated coke moving bed desulfurization device, as shown in FIG. 1 , which includes a moving bed desulfurization unit 1 , and the moving bed desulfurization unit 1 includes: a moving bed body 10 , a moving bed body 10 It has a cavity, and the moving bed body 10 is also provided with a gas inlet to be desulfurized and a desulfurized gas outlet arranged opposite to the gas inlet to be desulfurized. According to the gas flow direction, the cavity is divided into an air flow entry section 11, a filler filling section 12 and an air flow in turn. The discharge section 13, the gas flow inlet section 11 is provided with a gas inlet to be desulfurized and a powdery active coke spray inlet, the desulfurization gas outlet is set in the gas flow discharge section 13, and the filler filling section 12 is filled with inert bed material and/or granular active coke, and inert The particle size of the bed material and granular activated coke is larger than that of the powdered activated coke.

In the actual operation process, as shown in Figure 1, the gas A to be desulfurized enters the gas flow entry section 11 through the gas inlet to be desulfurized, and in the gas flow entry section 11, it contacts with the powdery activated coke sprayed into the powdery active coke injection port, and Carry out the desulfurization process. At the same time, with the flow of the gas flow, the powdery activated coke is entrained in the gas and enters the filler filling section 12. At this stage, the powdery activated coke continues the desulfurization process while gradually being filled with the inert bed material and/or Or particle active coke interception to complete gas-solid separation. The separated desulfurized gas is discharged through the gas flow discharge section 13 . The inert bed material and/or particle activity after intercepting the powdered activated coke can be slowly discharged from the moving bed body 10 .

Using the powder activated coke moving bed desulfurization device provided by the present invention to carry out the powder activated coke moving bed desulfurization treatment on the gas can significantly increase the residence time of the powder activated coke in the system, so that the powder activated coke can be more fully utilized. Sulfur capacity, improve desulfurization efficiency.

In addition, when the filler filling section 12 is filled with granular activated coke, these granular activated cokes can perform gas desulfurization together with the powdered activated coke, which can further improve the desulfurization efficiency. And after intercepting the powdery activated coke after desulfurization, the granular activated coke is slowly discharged, the small output and the slow moving speed can reduce the wear amount of the granular activated coke, so that it can be reused.

In a typical embodiment, as shown in FIG. 1 , according to the gas flow direction, the gas flow inlet section 11 includes a gas flow inlet section 111 arranged close to the inlet of the gas to be desulfurized and a gas flow expanding section connected to it and arranged near the filler filling section 12 paragraph 112. In this way, the to-be-desulfurized gas enters the gas flow inlet section 111 and the gas flow gradually expanding section 112 and gradually spreads out, so as to more fully contact the injected powdery activated coke.

In a typical embodiment, the airflow inlet section 111 is provided with at least one powder activated coke spray inlet. In this way, the powdered activated coke can be contacted with the gas to be desulfurized for the first time, which helps to further improve the desulfurization efficiency, and continues to increase the residence time of the powdered activated coke in the system, making full use of its sulfur capacity.

In a preferred embodiment, as shown in FIG. 1 , the moving bed desulfurization unit 1 further includes a powdery active coke spray device 20 , and the powdery active coke spray device 20 extends through the outer wall of the moving bed body 10 to the point where the gas flow gradually expands. Inside the section 112, and the powdery active coke injection device 20 is provided with a plurality of powdery active coke injection ports. In this way, the powdered activated coke can be more dispersed and more uniformly sprayed into the airflow entry section 11 to contact with the gas.

In a preferred embodiment, as shown in FIG. 1 , the bottom of the airflow gradually expanding section 112 is further provided with a powdery activated coke dropping bin 113 for receiving the powdery active coke falling from the inside of the airflow gradually expanding section 112 due to gravity coke. During the process of being sprayed into the powdery activated coke, a small part of the powdery activated coke will inevitably fall down due to gravity, and the powdery activated coke dropping bin 113 can be used to collect this part of the powdery activated coke and reuse it.

In a preferred embodiment, according to the gas flow direction, the gas flow discharge section 13 includes a gas flow tapering section 131 disposed near the packing section 12 and a gas flow outlet section 132 disposed near the desulfurized gas outlet. In this way, the desulfurized gas separated by the packing section 12 is gradually contracted and discharged from the moving bed body 10 .

It should be noted that the moving bed body 10 in the present invention can be a multi-stage structure, for example, it can be divided into multi-stage desulfurization units from top to bottom. As for the structure of the airflow discharge section 13, it is only necessary to connect the multi-stage filler filling sections 12 to each other. The gas to be desulfurized can enter from each stage gas flow entry section 11, and be contacted with the powdered activated coke injected into it and desulfurized. FIG. 1 of the present invention only shows a one-segment structure, and a multi-segment structure should also be within the scope of the present invention, which should be understood by those skilled in the art, and will not be repeated here.

In a preferred embodiment, as shown in FIG. 1 , the moving bed desulfurization unit 1 further includes: a first air distribution plate 14, which is arranged between the air inlet section 11 and the packing section 12; the second air distribution is uniform The plate 15 is arranged between the filler filling section 12 and the airflow discharge section 13 . The use of the first air distribution plate 14 can make the air flow entering the section 11 enter the packing section 12 more uniformly for gas-solid separation, and when using granular activated coke as bed material, the contact between the gas and granular activated coke can also be increased noodle. The desulfurized gas can be more fully collected into the gas flow discharge section 13 and discharged by using the second gas distribution plate 15 .

Based on the structure of the moving bed body 10 above, the powdered activated coke can be more fully distributed in the gas flow inlet section 11 to participate in the gas desulfurization. Fig. 2 shows that the above-mentioned powdered activated coke moving bed desulfurization device obtained by simulation calculation moves during the actual desulfurization work. The distribution map of powdered active coke inside the bed can also prove this.

In one embodiment, the top of the packing section 12 is provided with an inlet for the inert bed material and/or granular activated coke, and the bottom is provided with an outlet for the inert bed material and/or granular activated coke. With the progress of gas-solid separation, the bed material mixed with powdered activated coke is slowly removed, and at the same time, new bed material is continuously entered, which ensures the continuous progress of desulfurization treatment and gas-solid separation.

In a preferred embodiment, as shown in FIG. 1 , the moving bed desulfurization unit 1 further includes: a first water distribution humidification unit 16 , which is arranged at a position close to the top of the packing section 12 ; a second water distribution humidification unit 16 ; The unit 17 is arranged in the airflow inlet section 111 . In this way, the process water D can be introduced to humidify the desulfurized gas and the bed material. Due to the effect of the high temperature flue gas, the process water D evaporates and is discharged with the flue gas after reaching the standard. Specifically, the first water distribution humidification unit 16 is to humidify the surface of the powdery active coke, which is beneficial to the penetration of SO ₂ in the flue gas into the liquid film covering the surface of the active coke; the second water distribution humidification unit 17 is In order to humidify and cool down the gas A to be desulfurized, the temperature of the flue gas can reach the optimum desulfurization temperature.

In order to dedust the desulfurized gas, in a preferred embodiment, as shown in FIG. 1 , the moving bed desulfurization unit 1 further includes a first bag filter 18, and the inlet of the first bag filter 18 is connected to the desulfurization gas outlet , the first bag filter 18 also has a first gas phase outlet and a first solid phase outlet. A small amount of powdery active coke is inevitably carried in the gas intercepted by the bed material. The first bag filter 18 can be used to separate this part of the powdery active coke, so that the separated purified gas B is discharged, and the collected powdery active coke is discharged. Active coke can be reused.

In a preferred embodiment, as shown in FIG. 1 , the powder activated coke moving bed desulfurization device further includes a separation unit 2, and the separation unit 2 includes: a separation bed 21, which has a bed material inlet, a fluidization gas inlet, a fluidization The gas outlet and the bed material outlet, the bed material inlet is connected with the outlet of the filler filling section 12; the second bag filter 22, its inlet is connected with the fluidizing gas outlet, and the second bag filter 22 also has a second gas phase outlet and a first Two solid phase outlets, the second gas phase outlet is connected with the fluidization gas inlet; the bed material storage bin 23 is connected with the bed material outlet.

In the separation bed 21, the desulfurized powdered activated coke is "blown" out of the bed material by the fluidizing gas and discharged from the fluidizing gas outlet, and enters the second bag filter 22 for further gas-solid separation. The bed material is discharged from the bed material outlet and enters the bed material storage bin 23 . When actually separating the powdered activated coke, it is also possible to additionally introduce fresh fluidizing gas C to the fluidizing gas inlet for purging.

In a preferred embodiment, the bottom of the airflow gradually expanding section 112 is also provided with a powdery active coke dropping bin 113, which is used to receive the powdery active coke falling from the inside of the airflow gradually expanding section 112 due to gravity; The bottom of the blanking bin 113 is also provided with a discharge port, and the bed material inlet of the separation bed 21 is also connected to the discharge port and the first solid phase outlet of the first bag filter 18 . In this way, the powdery activated coke dropping bin 113 and the powdery activated coke collected by the first bag filter 18 can be processed together with the separation bed 21 .

In a preferred embodiment, as shown in FIG. 1, the moving bed desulfurization unit 1 further includes at least one powder activated coke supply bin 19, and the outlet of the powder activated coke supply bin 19 is connected to the powder activated coke spray inlet, The inlet of the powder activated coke supply bin 19 is connected with the second solid phase outlet of the second bag filter 22 . In this way, the powdery activated coke separated by the second bag filter 22 can be further returned to the powdery activated coke supply bin 19, and further injected into the system through the powdery activated coke injection port to continue to participate in the gas desulfurization process.

In a preferred embodiment, the moving bed desulfurization unit 1 further includes a bed material supply bin 30, the inlet of the bed material supply bin 30 is connected to the outlet of the bed material storage bin 23, and the outlet of the bed material supply bin 30 is connected with the filler filling section 12 Entrance at the top. This allows the bed material to be returned for reuse.

In a preferred embodiment, as shown in FIG. 1 , the powdered activated coke moving bed desulfurization device further includes a powdered activated coke withdrawal device 3 , which is connected to the inlet of the powdered activated coke supply bin 19 and the second solid phase outlet. pipes between them. In this way, when the powdered activated coke is completely filled with sulfur, the powdered activated coke can be output from the system by using the powdered activated coke exiting device 3, and can be used for subsequent regeneration and other processes. Specifically, the above-mentioned powdered activated coke withdrawal device 3 includes a powdered activated coke withdrawal bin 31, the inlet of which is connected to the pipeline between the inlet of the powdered activated coke supply bin 19 and the second solid phase outlet.

In a preferred embodiment, the separation unit 2 further includes a circulating fan 24, which is arranged on the pipeline connecting the second gas phase outlet with the fluidizing gas inlet.

The device provided by the present invention is also provided with various valves. In one embodiment, the valves include:

The first valve 101 is arranged on the pipeline connecting the outlet of the bed material supply bin 30 with the inlet of the top of the packing section 12;

The second valve 102 is arranged on the supply pipeline of the process water D. The supply pipeline includes a main supply pipeline, a first branch pipe connected to the first water distribution and humidification unit 16 and connected to the second water distribution and humidification unit 17 the second branch pipe; the third valve 103 is arranged on the first branch pipe; the fourth valve 104 is arranged on the second branch pipe;

At least one fifth valve 105 is arranged on the feeding pipeline of the powdery active coke supply bin 19 in a one-to-one correspondence; the sixth valve 106 is arranged on the inlet pipeline of the powdery active coke supply bin 19;

The seventh valve 107 is arranged on the pipeline where the first solid phase outlet is located;

The eighth valve 108 is arranged on the outlet pipeline at the bottom of the filler filling section 12; the ninth valve 109 is arranged on the pipeline where the discharge port of the powder activated coke blanking bin 113 is located;

The tenth valve 201 is arranged on the pipeline where the second solid phase outlet is located;

The eleventh valve 202 is arranged on the discharge pipeline of the bed material storage bin 23;

The twelfth valve 203 is arranged on the supply pipeline of the fresh fluidizing gas C;

The thirteenth valve 301 is arranged on the feeding pipeline of the powdery active coke exiting bin 31 ; the fourteenth valve 302 is arranged on the discharging pipeline of the powdery active coke exiting the bin 31 .

In the specific operation process, the following processes can be used for desulfurization treatment:

The temperature of the system in the moving bed desulfurization unit 1 is less than or equal to 150°C, and the resistance is less than or equal to 2000Pa;

The particle size of inert bed material and granular active coke is greater than or equal to 1mm;

The temperature of the bed material in the packing section 12 is less than or equal to 100°C;

The downward moving speed of the bed material in the packing section 12 is less than or equal to 1.0m/s;

The filler filling section 12 adopts a one-stage or multi-stage device (shown in FIG. 1 is 1 stage);

In a word, using the device provided by the present invention to carry out powdery active coke moving bed desulfurization treatment has the following advantages:

1) The present invention utilizes large particle size inert bed material or granular activated coke to simultaneously realize the separation of powdery activated coke and flue gas, and the removal of SO ₂ in flue gas.

2) Preferably, the present invention is provided with powder activated coke injection points at different positions to ensure sufficient and uniform mixing of powder activated coke and flue gas, and to ensure desulfurization efficiency.

3) Preferably, granular activated coke is arranged in the moving bed of the present invention, which can remove SO ₂ in the flue gas simultaneously with the powder activated coke. The system has a small output of granular activated coke and a slow moving speed can reduce the amount of wear.

4) The present invention increases the residence time of the powdery active coke in the system, and makes full use of the sulfur content of the powdery active coke.

5) The powder activated coke desulfurization device of the present invention can be modularized.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (16)

1. a kind of powdered activated coke moving bed desulfurizer, which is characterized in that including moving bed desulfurization unit (1), the movement Bed desulfurization unit (1) include:

Moving bed ontology (10), the moving bed ontology (10) have cavity, be additionally provided on the moving bed ontology (10) to Processed gas import and the desulfurized gas outlet being oppositely arranged with the gas feed to be desulfurization, according to gas flow direction, institute It states cavity and is successively divided into air-flow approach section (11), filler filled section (12) and air-flow discharge section (13), the air-flow enters Section (11) is provided with the gas feed to be desulfurization and powdered activated coke entrance, and the desulfurized gas outlet is arranged in the gas Section (13) are discharged in stream, burnt filled with inert bed material and/or seed activity in the filler filled section (12), and the inert bed material And the partial size of the seed activity coke is all larger than powdered activated coke.

2. powdered activated coke moving bed desulfurizer according to claim 1, which is characterized in that according to gas flowing side To, the air-flow approach section (11) include close to the gas feed setting to be desulfurization air flow inlet section (111) and with its phase Even and close to the air-flow divergent segment (112) of the filler filled section (12) setting.

3. powdered activated coke moving bed desulfurizer according to claim 2, which is characterized in that the air flow inlet section (111) it is provided at least one described powdered activated coke entrance.

4. powdered activated coke moving bed desulfurizer according to claim 2, which is characterized in that the moving bed desulfurization list First (1) further includes powdered activated coke injection apparatus (20), and the powdered activated coke injection apparatus (20) passes through the moving bed sheet It is internal that the outer wall of body (10) extends to the air-flow divergent segment (112), and the powdered activated coke injection apparatus (20) is provided with Multiple powdered activated coke entrances.

5. powdered activated coke moving bed desulfurizer according to claim 4, which is characterized in that the air-flow divergent segment (112) bottom is additionally provided with powdered activated coke blanking storehouse (113), internal because of weight for accepting the air-flow divergent segment (112) The powdered activated coke that power is fallen.

6. powdered activated coke moving bed desulfurizer according to claim 2, which is characterized in that according to gas flowing side To air-flow discharge section (13) includes close to the air-flow converging transition (131) of the filler filled section (12) setting and close to institute State the air stream outlet section (132) of desulfurized gas outlet setting.

7. powdered activated coke moving bed desulfurizer according to any one of claim 1 to 6, which is characterized in that described Moving bed desulfurization unit (1) further include:

First airflow uniform distribution plate (14) is arranged between the air-flow approach section (11) and the filler filled section (12)；

Second airflow uniform distribution plate (15), setting is between the filler filled section (12) and air-flow discharge section (13).

8. the powdered activated coke moving bed desulfurizer according to any one of claim 2 to 6, which is characterized in that described The entrance of the inert bed material and/or seed activity coke is provided at the top of filler filled section (12), bottom is provided with described The outlet of inert bed material and/or seed activity coke.

9. powdered activated coke moving bed desulfurizer according to claim 8, which is characterized in that the moving bed desulfurization list First (1) further include:

First water distribution humidification unit (16) is arranged in the filler filled section (12) close to the position at top；

Second water distribution humidification unit (17) is arranged in the air flow inlet section (111).

10. powdered activated coke moving bed desulfurizer according to claim 8, which is characterized in that the moving bed desulfurization Unit (1) further includes the first bag filter (18), and the entrance of first bag filter (18) goes out with the processed gas Mouth is connected, and first bag filter (18) also has the first gaseous phase outlet and the first solid-phase outlet.

11. powdered activated coke moving bed desulfurizer according to claim 10, which is characterized in that the powdered activated coke Moving bed desulfurizer further includes separative unit (2), and the separative unit (2) includes:

Separation bed (21) has bed material import, inlet for fluidization air, fluidized gas outlet and bed material outlet, the bed material import and institute The outlet for stating filler filled section (12) is connected；

Second bag filter (22), import are connected with fluidized gas outlet, and second bag filter (22) is also It is exported with the second gaseous phase outlet and second solid phase, second gaseous phase outlet is connected with the inlet for fluidization air；

Bed material warehouse (23) is connected with bed material outlet.

12. powdered activated coke moving bed desulfurizer according to claim 11, which is characterized in that the air-flow divergent segment (112) bottom is additionally provided with powdered activated coke blanking storehouse (113), internal because of weight for accepting the air-flow divergent segment (112) The powdered activated coke that power is fallen；Powdered activated coke blanking storehouse (113) bottom is additionally provided with discharge gate, the separation bed (21) The bed material import be also connected with first solid-phase outlet of the discharge gate and first bag filter (18).

13. powdered activated coke moving bed desulfurizer according to claim 11, which is characterized in that the moving bed desulfurization Unit (1) further includes at least one powdered activated coke supply storehouse (19), the outlet of powdered activated coke supply storehouse (19) and institute It states powdered activated coke entrance to be connected, the entrance of powdered activated coke supply storehouse (19) and second bag filter (22) The second solid phase outlet be connected.

14. powdered activated coke moving bed desulfurizer according to claim 11, which is characterized in that the moving bed desulfurization Unit (1) further includes bed material supply storehouse (30), the entrance of bed material supply storehouse (30) and the outlet of the bed material warehouse (23) It is connected, the outlet of bed material supply storehouse (30) and the entrance at the top of the filler filled section (12).

15. powdered activated coke moving bed desulfurizer according to claim 13, which is characterized in that the powdered activated coke Moving bed desulfurizer further includes powdered activated coke extractor (3), the entrance with powdered activated coke supply storehouse (19) Pipeline between the second solid phase outlet is connected.

16. powdered activated coke moving bed desulfurizer according to claim 11, which is characterized in that the separative unit (2) further include circulating fan (24), be arranged on the pipeline that second gaseous phase outlet is connected with the inlet for fluidization air.