CN217829470U - Dry-method fixed bed adsorption device for desulfurization and denitrification - Google Patents
Dry-method fixed bed adsorption device for desulfurization and denitrification Download PDFInfo
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- CN217829470U CN217829470U CN202221535343.4U CN202221535343U CN217829470U CN 217829470 U CN217829470 U CN 217829470U CN 202221535343 U CN202221535343 U CN 202221535343U CN 217829470 U CN217829470 U CN 217829470U
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Abstract
The invention provides a dry fixed bed adsorption device for desulfurization and denitrification, which comprises: an adsorption body; a denitration unit located in the adsorption body; a desulfurization section located in the adsorption body and below the denitration section; the denitration portion and the desulfurization portion are separated by a preset distance in the adsorption body, and the preset distance is the same as the height of the denitration portion or the desulfurization portion occupying the adsorption body. The dry fixed bed adsorption device for desulfurization and denitrification can complete desulfurization and denitrification in the same device, has the effect of being similar to the workload of two separate bed bodies, and can also be filled with more adsorbents under the condition that the area of a double-layer bed body is smaller when the area of a field is smaller, so that the adsorption time is prolonged, and the operation is simpler and more convenient.
Description
Technical Field
The invention relates to the technical field of desulfurization and denitrification, in particular to a dry-method fixed bed adsorption device for desulfurization and denitrification.
Background
The dry desulfurization and denitration is also called dry flue gas desulfurization and denitration, and refers to the application of powdery or granular absorbent, adsorbent or catalyst to remove sulfide-containing gas in flue gas. Its advantages are simple process, no sewage and waste acid, low energy consumption, high temp of purified fume, no generation of white smoke, no need of secondary heating and less corrosion. The dry desulfurization and denitrification has higher purification degree and can remove organic sulfur and nitrate. However, the dry desulfurization and denitrification agent cannot be regenerated or is very difficult to regenerate, the sulfur and nitrate capacity is limited, a multi-tower series and parallel process is required to prolong the operation period, the desulfurization and denitrification equipment is huge, the investment and the occupied area are large, when the desulfurization and denitrification equipment fails, the desulfurization and denitrification equipment is inconvenient for operators to overhaul and maintain, the operation technical requirement is high, the labor intensity is high, and the use safety of the desulfurization and denitrification device cannot be guaranteed in time.
At present, a dry-method fixed bed adsorption device related to the market has a single structure, large floor area and small loading amount, and can not be implemented for some projects with small floor area.
Disclosure of Invention
The invention aims to provide a dry fixed bed adsorption device for desulfurization and denitrification, which can solve the problems that the dry fixed bed adsorption device in the market has a single structure, occupies a large area, is low in loading amount and cannot be implemented for certain projects with small site areas.
A dry fixed bed adsorption apparatus for desulfurization and denitrification, comprising:
an adsorption body;
a denitration unit located in the adsorption body;
a desulfurization section located in the adsorption body and below the denitration section;
the denitration portion and the desulfurization portion are separated by a preset distance in the adsorption body, and the preset distance is the same as the height of the denitration portion or the desulfurization portion occupying the adsorption body.
In an alternative embodiment, the denitration part and the desulfurization part occupy the same space in the adsorption body.
In an alternative embodiment, the denitration part comprises a denitration feeding bin and a denitration bed body;
denitration feeding storehouse one end with adsorb the body top and be connected, the other end with the denitration bed body is connected.
In an optional embodiment, the denitration portion further comprises a first feeding pipe, one end of the first feeding pipe is connected with the denitration feeding bin, and the other end of the first feeding pipe is communicated with the denitration bed body.
In an optional embodiment, a denitration agent is disposed in the denitration bed body, and the tail end of the first feeding pipe is located above the denitration agent.
In an alternative embodiment, the desulfurization section comprises a desulfurization feed bin and a desulfurization bed body;
and one end of the desulfurization feeding bin is connected with the top of the adsorption body, and the other end of the desulfurization feeding bin is connected with the desulfurization bed body.
In an optional embodiment, the desulfurization part further comprises a second feeding pipe, one end of the second feeding pipe is connected with the desulfurization feeding bin, and the other end of the second feeding pipe is connected with the desulfurization bed body through the denitrification bed body.
In an optional embodiment, a desulfurizing agent is arranged in the desulfurization bed body, and the tail end of the second feeding pipe is positioned above the desulfurizing agent.
In an optional embodiment, the denitration section further comprises a first discharge pipe, the desulfurization section further comprises a second discharge pipe, one end of the first discharge pipe is connected with the bottom of the denitration bed body, the other end of the first discharge pipe extends to the bottom of the adsorption body through the desulfurization bed body, one end of the second discharge pipe is connected with the bottom of the desulfurization bed body, and the other end of the second discharge pipe extends to the bottom of the adsorption body.
In an optional embodiment, the adsorption body is provided with a gas inlet and a gas outlet, the gas inlet is communicated with the desulfurization part, and the gas outlet is communicated with the denitrification part.
The dry fixed bed adsorption device for desulfurization and denitrification provided by the embodiment of the invention at least has the following beneficial effects:
the dry fixed bed adsorption device for desulfurization and denitrification provided by the embodiment of the invention can complete desulfurization and denitrification in the same device, has the effect similar to the workload of two separate bed bodies, and can be filled with a larger amount of adsorbent under the condition that the area of a field is smaller and the area of a double-layer bed body is smaller, so that the adsorption time is prolonged, and the operation is simpler and more convenient.
Drawings
FIG. 1 is a schematic structural diagram of a dry fixed bed adsorption device for desulfurization and denitrification according to the present invention.
[ reference numerals ]
100. An adsorption body; 101. an air inlet; 102. an air outlet; 103. a manual gate valve; 104. a star-shaped discharge valve; 1. a denitration unit; 11. a denitration feeding bin; 12. a denitration bed body; 13. a first feed tube; 14. a first discharge pipe; 2. a desulfurization section; 21. a desulfurization feeding bin; 22. a desulfurization bed body; 23. a second feed tube; 24. a second discharge tube.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The following describes in detail a guardrail with a good warning effect for building construction according to the present invention with reference to the accompanying drawings and specific embodiments. It is also to be noted that, in order to make the embodiments more detailed, the following embodiments are preferred and optimized, and other alternative implementations may be adopted by those skilled in the art; also, the drawings are only for purposes of more particularly describing embodiments and are not intended to limit the invention in any way.
It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the relevant art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
In general, terms may be understood at least in part from the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in the singular or may be used to describe a combination of features, structures, or characteristics in the plural, depending at least in part on the context. Additionally, the term "based on" may be understood as not necessarily intended to convey an exclusive set of factors, but may instead allow for the presence of other factors not necessarily explicitly described, depending at least in part on the context.
As used herein, the term "nominal" refers to a desired or target value, and a range of values above and/or below the desired value, of a characteristic or parameter set during a design phase of a production or manufacturing process for a component or process operation. The range of values may be due to slight variations in manufacturing processes or tolerances. As used herein, the term "about" indicates a value of a given amount that may vary based on the particular technology node associated with the subject semiconductor device. The term "about" may indicate a given amount of a value that varies, for example, within 5% -15% of the value (e.g., ± 5%, ± 10% or ± 15% of the value), based on the particular technology node.
It is understood that the meaning of "on 8230; \8230on", "on 82308230, 8230; \8230on" and "on 8230; \8230a top" in this disclosure should be interpreted in the broadest manner such that "on 8230; \8230on" means not only "directly on" something "but also on" something "with the meaning of intervening features or layers there between, and" on 8230; \8230on "or" on 8230, above "means not only the meaning of" on "or" above "something, but may also include the meaning of" on "or" above "something with no intervening features or layers there between.
Furthermore, spatially relative terms such as "below 823030; below", "lower", "above", "upper" and the like may be used herein for ease of description to describe one element or feature's relationship to another element or feature or features, as illustrated in the figures. Spatially relative terms are intended to encompass different orientations in use or operation of the device in addition to the orientation depicted in the figures. The device may be otherwise oriented and the spatially relative descriptors used herein interpreted accordingly.
At present, a dry-method fixed bed adsorption device related to the market has a single structure, large floor area and small loading amount, and can not be implemented for some projects with small floor area. The double-layer fixed bed structure can effectively solve the problem that the fixed bed occupies a large area, so that the fixed bed desulfurization and denitrification process can adapt to more application scenes, and the use value of the dry fixed bed desulfurization and denitrification process is effectively improved. In view of this, the embodiment of the present invention provides a dry fixed bed adsorption device for desulfurization and denitrification, which can solve the above technical problems.
The dry fixed bed adsorption device for desulfurization and denitrification provided by the embodiment of the invention comprises: an adsorption body 100; a denitration unit 1 and a desulfurization unit 2. Wherein the denitration part 1 is positioned in the adsorption body 100; the desulfurization part 2 is positioned in the adsorption body 100 and below the denitration part 1; the denitration portion 1 and the desulfurization portion 2 are spaced by a predetermined distance in the adsorption body 100, and the predetermined distance is the same as the height of the denitration portion 1 or the desulfurization portion 2 occupying the adsorption body 100.
The dry fixed bed adsorption device for desulfurization and denitrification provided by the embodiment of the invention at least has the following beneficial effects:
the dry fixed bed adsorption device for desulfurization and denitrification provided by the embodiment of the invention can complete desulfurization and denitrification in the same device, has the effect similar to the workload of two separate bed bodies, and can be filled with a larger amount of adsorbent under the condition that the area of a field is smaller and the area of a double-layer bed body is smaller, so that the adsorption time is prolonged, and the operation is simpler and more convenient.
The apparatus provided by the embodiments of the present invention will be further explained and described by alternative embodiments.
It should be noted that the adsorption body 100 provided in the embodiment of the present invention may be a tower body, and the desulfurization unit 2 and the denitration unit 1 are disposed inside the tower body. The diameter of tower body can set up according to the place needs, and the example, when the place is less, the diameter of tower body can be great, and when the place is great, the diameter of tower body can be great. According to the embodiment of the invention, the desulfurization part 2 and the denitration part 1 are arranged in one tower body, so that the occupied space of the whole adsorption device is reduced, desulfurization and denitration are simultaneously carried out, and the working efficiency is improved.
In an alternative embodiment, the denitration section 1 and the desulfurization section 2 occupy the same space in the adsorption body 100.
Furthermore, the desulfurization part 2 and the denitration part 1 occupy the same space in the tower body, so that the removal rate of sulfide and nitrate in the gas can be ensured to be consistent, and the removal efficiency is improved.
In an alternative embodiment, the denitration section 1 comprises a denitration feed bin 11 and a denitration bed 12;
Further, the denitration feeding bin provided by the embodiment of the present invention may be a conical denitration material hopper, the cone angle of the conical denitration material hopper may be 45 ° to 120 °, for example, the cone angle of the conical denitration material hopper may be 45 °, 65 °, 75 °, 90 °, 120 °, and the like, and the cone angle of the conical denitration material hopper is not limited thereto in the embodiment of the present invention.
In an optional embodiment, the denitration portion 1 further comprises a first feeding pipe 13, one end of the first feeding pipe 13 is connected to the denitration feeding bin 11, and the other end is communicated with the denitration bed 12.
Further, a control valve is provided on the first feeding pipe 13 to control the feeding content of the denitrating agent.
In an optional embodiment, a denitration agent is disposed in the denitration bed body 12, and the tail end of the first feeding pipe 13 is located above the denitration agent. The material level height of the denitrifier is 2-2.5 meters above the plane of the conical denitration material hopper.
The distance of the tail end of first inlet pipe 13 apart from denitration agent top can be for the third of first inlet pipe 13 length, and the tail end through setting up first inlet pipe 13 is in the denitration agent top, and on the one hand, leaves the reaction space of gas and denitration agent, and on the other hand guarantees that gas can contact with denitration agent, does not influence the denitration effect.
In an optional embodiment, the denitration section 1 further comprises a first discharge pipe 14, the desulfurization section 2 further comprises a second discharge pipe 24, one end of the first discharge pipe 14 is connected to the bottom of the denitration bed body 12, the other end of the first discharge pipe extends to the bottom of the adsorption body 100 through the desulfurization bed body 22, one end of the second discharge pipe 24 is connected to the bottom of the desulfurization bed body 22, and the other end of the second discharge pipe extends to the bottom of the adsorption body 100.
Further, the first discharging pipe 14 includes a first section, a second section and a third section which are connected in sequence, the first section and the second section are connected by a first reference angle, the second section and the third section are connected by a second reference angle, the first reference angle is the same as the second reference angle, and the first reference angle and the second reference angle may be 135 °. Through setting up above-mentioned connection angle, can make things convenient for the discharge of denitrifier to do not influence the setting of difference desulfurization portion 2 in a tower body.
Further, the control valves provided on the first and second discharging pipes 14 and 24 may include a manual gate valve 103 and a star-type discharging valve 104, and the discharge of the material may be controlled by the manual gate valve 103 and the star-type discharging valve 104.
Further, control valves are provided on the first discharge pipe 14 and the second discharge pipe 24 to control the discharge rate.
In an alternative embodiment, the desulfurization section 2 comprises a desulfurization feed bin 21 and a desulfurization bed body 22;
one end of the desulfurization feeding bin 21 is connected with the top of the adsorption body 100, and the other end is connected with the desulfurization bed body 22.
Further, the desulfurization feeding bin 21 provided by the embodiment of the present invention may be a conical denitration hopper, the conical angle of the conical desulfurization hopper may be 45 ° to 120 °, for example, the conical angle of the conical desulfurization hopper may be 45 °, 65 °, 75 °, 90 °, 120 °, and the like, and the conical angle of the conical desulfurization hopper is not limited thereto by the embodiment of the present invention.
In an alternative embodiment, the desulfurization section 2 further comprises a second feeding pipe 23, one end of the second feeding pipe 23 is connected with the desulfurization feeding bin 21, and the other end is connected with the desulfurization bed 22 through the denitrification bed 12.
Further, a control valve is provided on the second feeding pipe 23 to control the feeding content of the desulfurizing agent.
In an alternative embodiment, the desulfurization agent is disposed in the desulfurization bed 22, and the end of the second feeding pipe 23 is located above the desulfurization agent. The height of the material level of the desulfurizer is 2-2.5 meters above the plane of the conical desulfurization hopper.
The distance between the tail end of the second feeding pipe 23 and the upper side of the desulfurizer can be one third of the length of the second feeding pipe 23, and the tail end of the second feeding pipe 23 is arranged above the desulfurizer, so that on one hand, a reaction space for gas and the desulfurizer is reserved, on the other hand, the gas can be in contact with the desulfurizer, and the desulfurization effect is not influenced.
In an alternative embodiment, the adsorption body 100 has a gas inlet 101 and a gas outlet 102, the gas inlet 101 is communicated with the desulfurization section 2, and the gas outlet 102 is communicated with the denitrification section 1.
The gas to be treated enters the desulfurization part 2 and the denitration part 1 in sequence through a gas inlet 101 at the bottom of the tower body and is discharged through a gas outlet 102 at the top of the tower body.
Further, gas outlet 102 and air inlet 101 set up in the same one side of tower body, do benefit to desulfurization portion 2 and 1 bed body of denitration portion and arrange, are favorable to practicing thrift area.
The adsorption apparatus provided by the embodiments of the present invention is further explained and described below in more specific examples.
As an example, the adsorption device provided by the embodiment of the present invention includes an upper adsorption chamber bed body, i.e., the desulfurization bed body 22, and a lower adsorption chamber bed body, i.e., the desulfurization bed body 22, and an air inlet 101 is provided at a lower end of a side surface of the lower adsorption chamber bed body, and an air outlet 102 is provided at an upper end of a side surface of the upper adsorption chamber bed body. Two feeding bins containing a bag breaking device, namely a denitration feeding bin 11 and a desulfurization feeding bin 21, are arranged at the top of the upper adsorption bed body, the two feeding bins are communicated with the upper and lower adsorption chamber bed bodies through two feeding pipes (namely a first feeding pipe 13 and a second feeding pipe 23), and two integral hoppers, namely a conical desulfurization hopper and a conical denitration hopper, are respectively arranged at the bottoms of the upper and lower adsorption chamber bed bodies; the adsorbent material is piled up in two hoppers, and the material level is 2-2.5 meters above the plane of the cone hopper. The cone hopper structure is the grid board, is formed by the concatenation of a plurality of boards, and the bottom is equipped with strutting arrangement, prevents because the material piles up too much, and weight is too big, makes the bed sink. The bottom of the two hoppers is respectively connected with a discharge pipe, namely a first discharge pipe 14 and a second discharge pipe 24, and the upper discharge pipe can penetrate through the lower conical hopper and then penetrate through the bottom steel plate. The discharge pipe is connected with a manual discharge valve and an electric star-type discharge valve 104. The upper bed body and the lower bed body are two independent but mutually communicated bed bodies, the inclination angles of the two cone hoppers and the horizontal plane form an angle of 45 degrees, and the bending angle of the upper layer discharge pipe, namely the first discharge pipe 14, forms an angle of 135 degrees.
The utility model discloses in the use: the method comprises the following steps that an adsorbent material ton bag is hoisted into a feeding bin, a bag breaking device punctures the ton bag, a feeding valve is opened, the adsorbent material enters an upper bed body adsorption chamber and a lower bed body adsorption chamber along a feeding pipe respectively, is accumulated on a cone hopper, is leveled, and is stopped feeding after reaching a certain material level height.
The utility model discloses in the use: after the adsorbent material is filled, the sulfur and nitrogen oxide containing flue gas is received through a flue header pipe and is connected with each bed body through branch pipes, the inlets of the sulfur and nitrogen oxide containing flue gas branch pipes are respectively connected with the lower layer air inlet 101 of the fixed bed, the flue gas enters the fixed bed, the sulfur and nitrogen oxide containing flue gas moves upwards through the bottom of the pore plate conical hopper, the sulfur and nitrogen oxide containing flue gas acts on the adsorbent through a desulfurization adsorbent material layer, the desulfurization effect is achieved, the denitration adsorbent material layer acts on the adsorbent, the denitration effect is achieved, the desulfurized and denitrified flue gas is connected to an outlet flue gas pipeline through a flue gas outlet, and the clean flue gas is discharged into the atmosphere after being converged to the outlet flue header pipe.
The utility model discloses in the use: after a period of reaction, the adsorption capacity of the adsorbent reaches a saturated state, at this time, a manual gate valve 103 at the bottom of the tower body is opened, a star-shaped discharge valve 104 is started, the saturated desulfurization and denitrification adsorbent material is discharged, and the two layers of valve mechanisms are mainly used for facilitating discharging and simultaneously performing double-layer gas locking to achieve double-layer protection; and after unloading, performing the feeding operation for feeding.
The foregoing is a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should be considered as the protection scope of the present invention.
Claims (10)
1. A dry method fixed bed adsorption equipment for SOx/NOx control, characterized in that, dry method fixed bed adsorption equipment for SOx/NOx control includes:
an adsorption body;
a denitration unit located in the adsorption body;
a desulfurization unit located in the adsorption body and below the denitration unit;
the denitration portion and the desulfurization portion are separated by a preset distance in the adsorption body, and the preset distance is the same as the height of the denitration portion or the desulfurization portion occupying the adsorption body.
2. The dry fixed bed adsorption apparatus for desulfurization and denitrification according to claim 1, wherein the denitration section and the desulfurization section occupy the same space in the adsorption body.
3. The dry fixed bed adsorption device for desulfurization and denitrification according to claim 1, wherein the denitrification section comprises a denitrification feed bin and a denitrification bed body;
denitration feeding storehouse one end with adsorb the body top and be connected, the other end with the denitration bed body is connected.
4. The dry fixed bed adsorption device for desulfurization and denitrification according to claim 3, wherein the denitrification part further comprises a first feeding pipe, one end of the first feeding pipe is connected with the denitrification feeding bin, and the other end of the first feeding pipe is communicated with the denitrification bed body.
5. The dry fixed bed adsorption device for desulfurization and denitrification according to claim 4, wherein a denitrification agent is arranged in the denitrification bed body, and the tail end of the first feeding pipe is positioned above the denitrification agent.
6. The dry fixed bed adsorption device for desulfurization and denitrification according to claim 4, wherein the desulfurization section comprises a desulfurization feed bin and a desulfurization bed body;
and one end of the desulfurization feeding bin is connected with the top of the adsorption body, and the other end of the desulfurization feeding bin is connected with the desulfurization bed body.
7. The dry fixed bed adsorption device for desulfurization and denitrification according to claim 6, wherein the desulfurization section further comprises a second feeding pipe, one end of the second feeding pipe is connected with the desulfurization feeding bin, and the other end of the second feeding pipe is connected with the desulfurization bed through the denitrification bed.
8. The dry fixed bed adsorption device for desulfurization and denitrification according to claim 7, wherein a desulfurizing agent is arranged in the desulfurization bed body, and the tail end of the second feeding pipe is positioned above the desulfurizing agent.
9. The dry fixed bed adsorption device for desulfurization and denitrification according to claim 7, wherein the denitrification part further comprises a first discharge pipe, the desulfurization part further comprises a second discharge pipe, one end of the first discharge pipe is connected with the bottom of the denitrification bed body, the other end of the first discharge pipe extends to the bottom of the adsorption body through the desulfurization bed body, one end of the second discharge pipe is connected with the bottom of the desulfurization bed body, and the other end of the second discharge pipe extends to the bottom of the adsorption body.
10. The dry fixed bed adsorption apparatus for desulfurization and denitrification according to claim 7, wherein the adsorption body has a gas inlet and a gas outlet, the gas inlet is communicated with the desulfurization section, and the gas outlet is communicated with the denitrification section.
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