CN213965993U

CN213965993U - Boiler dry desulphurization material injection apparatus

Info

Publication number: CN213965993U
Application number: CN202022957704.1U
Authority: CN
Inventors: 魏志照; 王春明
Original assignee: Harbin Greenland Source Environmental Protection Technology Co ltd
Current assignee: Harbin Greenland Source Environmental Protection Technology Co ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-08-17
Anticipated expiration: 2030-12-09

Abstract

The utility model discloses a boiler dry desulfurization material injection apparatus relates to dry desulfurization feeding equipment field, include: the air supply unit comprises a first air outlet and a second air outlet, the first air outlet is connected with the main air inlet, and the second air outlet is connected with the auxiliary air inlet; the utility model discloses well jet pump is provided with main air intake and supplementary air intake, and main air intake makes the jet pump inner chamber can not appear the material and sink end, jam with the cooperation of supplementary air intake, and can make the material fully loose in transportation process, guarantees that follow-up desulfurization in-process and flue gas fully contact, improves desulfurization efficiency and desulfurization effect.

Description

Boiler dry desulphurization material injection apparatus

Technical Field

The utility model relates to a dry desulfurization feeding equipment field especially relates to a boiler dry desulfurization material injection apparatus.

Background

During the combustion process of the boiler, a certain amount of flue gas is generated, and the flue gas contains hydrogen sulfide and organic sulfides, which are one of the main causes of environmental problems such as air pollution, acid rain and the like, so that the flue gas of the boiler needs to be subjected to desulfurization treatment.

In utilizing the pipeline to send into desulphurization unit with the flue gas among the prior art, having the desulfurizer in the desulphurization unit, the oxysulfide in the flue gas reacts with the desulfurizer and carries out the desulfurization, however, the desulfurizer is stacked at the assigned position, can not fully contact between flue gas and the desulfurizer, leads to the lower problem of desulfurization efficiency.

Dry desulfurization is one of the commonly used methods in desulfurization, and the dry desulfurization technology has the characteristics of simple process, simple and convenient operation, low investment and operation maintenance cost, easy treatment of desulfurization products, no secondary pollution and the like, and is widely applied, for example: the invention discloses a dry desulfurization reaction device, which comprises a storage bin, grinding equipment, a blowing pipeline and desulfurization equipment, wherein the grinding equipment for grinding a desulfurizer is arranged below the storage bin, the desulfurizer is blown by an equipped fan of the grinding equipment after being ground and is sprayed into the desulfurization equipment through the blowing pipeline to perform desulfurization reaction, but the desulfurizer cannot be fully loosened when being blown by the equipped fan in a single direction, the desulfurizer and the desulfurizer are inevitably adsorbed and fed into the desulfurization equipment together, the contact area of the desulfurizer and flue gas is reduced, the desulfurization efficiency is reduced, and part of the desulfurizer can be deposited to cause the blockage of a conveying pipeline.

Therefore, a boiler dry-method desulfurization material injection device which is simple in structure, capable of improving desulfurization efficiency and desulfurization effect and free of material deposition and blockage is urgently needed.

Disclosure of Invention

The utility model aims at providing a boiler dry desulfurization material injection apparatus to solve the problem that above-mentioned prior art exists, simple structure, can improve desulfurization efficiency and desulfurization effect, material deposit not block up.

In order to achieve the above object, the utility model provides a following scheme: the utility model provides a boiler dry desulfurization material injection apparatus, including jet pump, air feed unit and connection the feed unit of the feed inlet of jet pump, be provided with main air intake on the jet pump, the feed inlet of jet pump with main air intake all communicates the inner chamber of jet pump, the jet pump still is provided with and is used for blowing up the supplementary air intake of the inner chamber deposit material of jet pump, the air feed unit includes first air outlet and second air outlet, first air outlet with main air intake connection, the second air outlet with supplementary air intake connection.

Preferably, the device further comprises a first chamber, a second chamber and a third chamber, wherein a controller is arranged in the first chamber, the air supply unit is arranged in the second chamber, the jet pump and the feeding unit are arranged in the third chamber, and a channel for connecting the air supply unit and the jet pump is arranged between the second chamber and the third chamber.

Preferably, the air supply unit further comprises a roots blower, a straight air duct and a branch air duct, an air outlet of the roots blower is connected with an inlet of the straight air duct, an outlet of the straight air duct is the first air outlet, an inlet of the branch air duct is communicated with the straight air duct, and an outlet of the branch air duct is the second air outlet.

Preferably, the diameter of the branch air duct is smaller than that of the straight air duct.

Preferably, a partition plate for supporting the straight ventilation duct is provided in the second chamber.

Preferably, the feeding unit comprises a feeder and a powder bin for containing materials, an outlet of the powder bin is connected with a feeding hole of the feeder, and a discharging hole of the feeder is connected with a feeding hole of the injection pump.

Preferably, an adjuster for adjusting the discharging speed of the powder bin is arranged between the powder bin and the feeder.

Preferably, the inner wall of the upper end of the third chamber corresponds to a feeding port of the powder bin and is provided with an electric hoist, and a guardrail is arranged between the electric hoist and the powder bin.

Preferably, the bottom of the powder bin is of an inverted cone structure.

The utility model discloses for prior art gain following technological effect:

1. the jet pump is provided with a main air inlet and an auxiliary air inlet, the main air inlet corresponds to a jet orifice of the jet pump, the materials are guaranteed to be blown away by the air inlet of the main air inlet and carried to the jet orifice for jetting after entering an inner cavity of the jet pump, in the feeding process, part of the materials are inevitably deposited at the bottom of the inner cavity of the jet pump due to gravity or the blowing away effect of the air inlet of the main air inlet and cause blockage in time, the auxiliary air inlet is arranged to blow up the materials scattered and deposited at the bottom of the inner cavity of the jet pump, so that the materials are carried again by the air inlet of the main air inlet and jetted out from the jet orifice of the jet pump, the materials are not deposited in the inner cavity and further block a channel, and the air inlet of the auxiliary air inlet can generate a certain disturbance effect on the air inlet of the main air inlet, so that the materials in the auxiliary air inlet are fully loosened and further the materials are jetted out more loosely, the fully loosened material reacts with the flue gas, so that the desulfurization effect and the desulfurization efficiency are improved.

2. The controller is arranged in the first cavity, the air supply unit is arranged in the second cavity, the jet pump and the feeding unit are arranged in the third cavity, different units are arranged in different modes, and electromagnetic interference to the controller and mutual interference of heat seen by all the units during operation of other units can be avoided.

3. The diameter of the branch air channel is smaller than that of the straight air channel, so that the air quantity of the main air inlet can overcome the interference of the auxiliary air inlet, and the materials are carried to be sprayed out from the jet orifice.

4. Because the straight air duct is longer, in order to guarantee the stability and the structural rigidity of air delivery and supply, life, set up the baffle and support straight air duct.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a structural diagram of a boiler dry desulphurization material injection device of the utility model;

FIG. 2 is a partial enlarged view of the utility model at A;

wherein, 1, a first chamber; 2. a second chamber; 3. a third chamber; 4. a controller; 5. a Roots blower; 6. a straight air duct; 7. a branched air duct; 8. an injection pump; 9. a feeder; 10. a regulator; 11. a powder bin; 12. a guardrail; 13. an electric hoist; 14. a main air inlet; 15. an auxiliary air inlet; 16. an ejection port; 17. and a module base.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model aims at providing a boiler dry desulfurization material injection apparatus to solve the problem that prior art exists, simple structure, can improve desulfurization efficiency and desulfurization effect, material deposit not block up.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1, a dry desulfurization material spraying device for a boiler is provided, which can spray a powdered desulfurizer or other powdered materials, and comprises a spray pump 8, an air supply unit and a feeding unit connected to a feed inlet of the spray pump 8, wherein the spray pump 8 is provided with a main air inlet 14, the main air inlet 14 corresponds to a spray orifice 16 of the spray pump 8, the feed inlet and the main air inlet 14 of the spray pump 8 are both communicated with an inner cavity of the spray pump 8 for supplying desulfurizer and carrying air to the inner cavity of the spray pump 8, the spray pump 8 is further provided with an auxiliary air inlet 15 for blowing up the deposited desulfurizer in the inner cavity of the spray pump 8, the arrangement position and orientation of the auxiliary air inlet 15 can be set according to the position where deposition is easy in the inner cavity of the spray pump 8, if there are a plurality of positions where deposition of desulfurizer is easy, the number and positions of the auxiliary air inlet 15 can be adjusted according to actual situations, the air supply unit comprises a first air outlet and a second air outlet, the first air outlet is connected with the main air inlet 14, and the second air outlet is connected with the auxiliary air inlet 15.

This device still includes first cavity 1, second cavity 2 and third cavity 3, be provided with controller 4 in the first cavity 1, controller 4 is used for controlling the work of other units, it is preferred, be provided with control button and display screen on the controller 4, the air feed unit sets up in second cavity 2, ejector pump 8 sets up in third cavity 3 with the feed unit, the multiunit separates the setting, interference each other has been avoided, set up the passageway that air feed unit and ejector pump 8 are connected between second cavity 2 and third cavity 3.

The first chamber 1, the second chamber 2 and the third chamber 3 are arranged together on a module base 17.

The first chamber 1 and the second chamber 2 are provided with heat dissipation holes, preferably, the heat dissipation holes are arranged on the upper end surfaces of the first chamber 1 and the second chamber 2.

The air supply unit in the device also comprises a Roots blower 5, a straight air duct 6 and a branch air duct 7, the straight air duct 6 is provided with reduced resistance to wind by the pipeline, which is beneficial to reducing energy consumption, an air outlet of the Roots blower 5 is connected with an inlet of the straight air duct 6, an outlet of the straight air duct 6 is a first air outlet which is connected with a main air inlet 14, the Roots blower 5 conveys compressed air into an inner cavity of a jet pump 8, an inlet of the branch air duct 7 is connected with the straight air duct 6, an outlet of the branch air duct 7 is a second air outlet which is connected with an auxiliary air inlet 15, part of air in the straight air duct 6 enters the inner cavity of the jet pump 8 from the branch air duct 7, preferably, the branch air duct 7 is L-shaped or linear, can be set according to actual conditions, and can reduce bending parts as far as possible, thereby reducing the resistance to wind by the pipeline and improving the utilization efficiency of energy.

When the number of the auxiliary air inlets is multiple, a plurality of branch air channels 7 can extend from the straight air channel 6, or the branch air channels 7 can be branched again.

Preferably, an air outlet of the Roots blower 5 is connected with the straight air duct 6 through a valve and used for adjusting the air volume of the straight air duct 6.

Preferably, a valve is arranged on the branch air duct 7 and used for adjusting the air volume in the branch air duct 7.

Preferably, the roots blower 5 and the second chamber 2 contact department, and the stabilizer blade lower extreme of roots blower 5 sets up the rubber cushion promptly, alleviates the vibration that produces and reduces the noise that the vibration brought when roots blower 5 moves.

Preferably, the straight air channel 6 is provided with a pressure gauge for detecting the pressure in the air channel.

The diameter of the branch air duct 7 is smaller than that of the straight air duct 6, so that the main air inlet 14 has enough air volume to overcome the disturbance of the auxiliary air inlet 15, and the desulfurizer is carried and sprayed out from the spray opening 16.

Be provided with in the second chamber 2 and be used for supporting the baffle of straight ventiduct 6, avoid roots's fan 5's vibration to cause the influence to straight ventiduct 6, guarantee the stability and the structural rigidity of defeated air supply, life.

The feeding unit in the device comprises a feeder 9 and a powder bin 11 for containing the desulfurizer, wherein an outlet of the powder bin 11 is connected with a feeding hole of the feeder 9, a discharging hole of the feeder 9 is connected with a feeding hole of the jet pump 8, preferably, the powder bin 11 is arranged above the feeder 9, and the feeder 9 is arranged above the jet pump 8.

Preferably, the feeder 9 is a rotary feeding structure and is driven by a variable frequency motor, and the feeding amount can be changed by changing the speed of the variable frequency motor.

An adjuster 10 for adjusting the discharging speed of the powder bin 11 is arranged between the powder bin 11 and the feeder 9 and is used for adjusting the discharging amount and the discharging speed of the powder bin 11.

The inner wall of the upper end of the third chamber 3 is provided with an electric hoist 13 corresponding to the feeding port of the powder bin 11, the bagged desulfurizer is lifted by the electric hoist 13 and is provided with the desulfurizer in the powder bin 11, manual force is saved, a guardrail 12 is arranged between the electric hoist 13 and the powder bin 11, and safety during hoisting of the bagged desulfurizer is improved.

The bottom of the powder bin 11 is an inverted cone structure, so that the desulfurizer can move towards the lower part of the powder bin 11 and then enter the feeder 9.

Preferably, the desulfurizing agent is a magnesium-based desulfurizing agent, and the injection port 16 of the injection pump 8 is connected with the desulfurization reaction equipment.

In the actual use process, the roots blower 5 and the feeder 9 are started by the controller 4, the bagged desulfurizer is lifted by the electric hoist 13, the lower end of the bagged desulfurizer is opened manually, the desulfurizer enters the powder bin 11 from the feed inlet of the powder bin 11, the desulfurizer entering the powder bin 11 slides downwards along the inner wall of the powder bin 11 and enters the feeder 9, the feeder 9 conveys the desulfurizer to the inner cavity of the jet pump 8, when the desulfurizer enters the inner cavity of the jet pump 8, most of compressed air generated by the roots blower 5 enters the inner cavity of the jet pump 8 from the main air inlet 14, the desulfurizer is blown off and carried to the jet orifice 16 of the jet pump 8, the other small part of compressed air generated by the roots blower 5 enters the inner cavity of the jet pump 8 from the auxiliary air inlet 15, the desulfurizer deposited in the inner cavity of the jet pump 8 is blown off, and the deposited desulfurizer is carried by the inlet air of the main air inlet 14 again, finally ejected from the ejection opening 16, the gas ejected from the ejection opening 16 and mixed with the desulfurizer and SO in the boiler flue gas₂The reaction is carried out, thus achieving the aim of desulfurization.

The adaptability that carries out according to actual demand all is in the protection scope of the utility model.

It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. The utility model provides a boiler dry desulfurization material injection apparatus, its characterized in that includes jet pump, air feed unit and connection the feed unit of the feed inlet of jet pump, be provided with main air intake on the jet pump, the feed inlet of jet pump with main air intake all communicates the inner chamber of jet pump, the jet pump still is provided with and is used for blowing up the supplementary air intake of the inner chamber deposit material of jet pump, the air feed unit includes first air outlet and second air outlet, first air outlet with main air intake connection, the second air outlet with supplementary air intake connection.

2. The injection device for the dry desulfurization materials of the boiler according to claim 1, further comprising a first chamber, a second chamber and a third chamber, wherein a controller is arranged in the first chamber, the air supply unit is arranged in the second chamber, the injection pump and the feeding unit are arranged in the third chamber, and a channel for connecting the air supply unit and the injection pump is arranged between the second chamber and the third chamber.

3. The injection device for the dry desulfurization materials for the boiler according to claim 2, wherein the air supply unit further comprises a roots blower, a straight air duct and a branch air duct, wherein an air outlet of the roots blower is connected with an inlet of the straight air duct, an outlet of the straight air duct is the first air outlet, an inlet of the branch air duct is communicated with the straight air duct, and an outlet of the branch air duct is the second air outlet.

4. The injection apparatus for boiler dry desulphurization material according to claim 3, wherein the diameter of the branch air duct is smaller than that of the straight air duct.

5. The injection apparatus for boiler dry desulphurization material according to claim 4, wherein a baffle plate for supporting the straight ventilation channel is arranged in the second chamber.

6. The injection device for the dry desulfurization materials in the boiler according to claim 2, wherein the feeding unit comprises a feeder and a powder bin for containing the materials, the outlet of the powder bin is connected with the feeding port of the feeder, and the discharging port of the feeder is connected with the feeding port of the injection pump.

7. The injection device for the dry desulfurization materials of the boiler according to claim 6, wherein a regulator for regulating the discharging speed of the powder bin is arranged between the powder bin and the feeder.

8. The injection device for the dry desulfurization materials in the boiler according to claim 7, wherein an electric block is arranged on the inner wall of the upper end of the third chamber corresponding to the feeding port of the powder bin, and a guardrail is arranged between the electric block and the powder bin.

9. The injection device for the dry desulfurization materials for the boiler according to claim 8, wherein the bottom of the powder bin has an inverted cone structure.