CN114751660B - Heat carrier indirect heating type carbon capture calciner - Google Patents

Heat carrier indirect heating type carbon capture calciner Download PDF

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Publication number
CN114751660B
CN114751660B CN202210373265.0A CN202210373265A CN114751660B CN 114751660 B CN114751660 B CN 114751660B CN 202210373265 A CN202210373265 A CN 202210373265A CN 114751660 B CN114751660 B CN 114751660B
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China
Prior art keywords
chamber
heat carrier
calciner
distribution
carrying agent
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CN202210373265.0A
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Chinese (zh)
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CN114751660A (en
Inventor
孙向文
姜孝国
王德华
王刚
何明月
朱英伟
王宏志
吕健
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Harbin Boiler Co Ltd
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Harbin Boiler Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2/00—Lime, magnesia or dolomite
    • C04B2/10—Preheating, burning calcining or cooling
    • C04B2/106—Preheating, burning calcining or cooling in fluidised bed furnaces
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/50—Carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2/00—Lime, magnesia or dolomite
    • C04B2/10—Preheating, burning calcining or cooling
    • C04B2/108—Treatment or selection of the fuel therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
    • F27B15/02—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B15/10—Arrangements of air or gas supply devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
    • F27B15/02—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B15/14—Arrangements of heating devices

Abstract

The invention relates to the technical field of boilers, in particular to a heat carrier indirect heating type carbon capture calciner, which aims to solve the problems that a conventional calciner adopts oxygen-enriched combustion to provide a calcination heat source and has higher investment and operation cost, and the scheme comprises a feed collecting device, a premixing chamber, a calcination reaction chamber, a distribution chamber, a discharge distribution device and CO 2 A fluidization wind system; the incoming material collecting device, the premixing chamber, the calcining reaction chamber, the distribution chamber and the discharging distribution device are sequentially arranged from one end to the other end, and the premixing chamber, the calcining reaction chamber and the distribution chamber are all connected with CO 2 The fluidized wind system is connected, the material collecting device is used for injecting a heat carrier and a carbon carrying agent, the heat carrier is a combustion heat source, the heat carrier is used as a calcination heat source, and the calciner does not need to be provided with an oxygen-enriched combustion system. The investment and the running cost can be reduced, the calciner adopts a fluidized bed mode, and the relatively independent premixing chamber, the calcination reaction chamber and the distribution chamber are arranged, so that the carbon carrying agent and the heat carrier can be fully mixed, and the stable decarburization reaction can be maintained.

Description

Heat carrier indirect heating type carbon capture calciner
Technical Field
The invention relates to the technical field of boilers, in particular to a heat carrier indirect heating type carbon capture calciner.
Background
The carbon trapping technology is a technology capable of directly reducing carbon dioxide emission, and has the advantages of low regeneration energy consumption, small equipment corrosion, low raw material cost and the like compared with the traditional EMA method and the CaO/CaCO3 method carbon trapping technology. CaCO3 in the calcium method carbon capture technology needs to be heated in a calciner to release CO2, so that the effect of CO2 enrichment is realized. Conventional calciners use oxygen-enriched combustion to provide the calcination heat source, and therefore have high investment and operating costs.
Disclosure of Invention
The purpose of the invention is that: in order to solve the problems of high investment and operation cost caused by providing a calcination heat source by adopting oxygen-enriched combustion in a conventional calciner, the invention provides a heat carrier indirect heating type carbon capture calciner.
The purpose of the invention is realized in the following way:
a heat carrier indirect heating type carbon capture calciner comprises an incoming material collecting device, a premixing chamber, a calcination reaction chamber, a distribution chamber, a discharge distribution device and CO 2 A fluidization wind system;
the incoming material collecting device, the premixing chamber, the calcining reaction chamber, the distribution chamber and the discharging distribution device are sequentially arranged from one end to the other end, and the premixing chamber, the calcining reaction chamber and the distribution chamber are all connected with CO 2 The fluidized wind system is connected, and the material collecting device is used for injecting a heat carrier and a carbon carrying agent, wherein the heat carrier is a combustion heat source.
Further, one side of the upper end of the calcination reaction chamber is connected with the premixing chamber, and the other side of the upper end of the calcination reaction chamber is connected with the distribution chamber.
Still further, the bottom of the premixing chamber, the bottom of the calcination reaction chamber and the bottom of the distribution chamber are all CO-compatible with 2 The fluidization wind system is connected.
Further, the incoming material collecting device comprises a heat carrier inlet pipe and a carbon carrying agent inlet pipe, wherein the heat carrier inlet pipe is connected with the premixing chamber, and the carbon carrying agent inlet pipe is arranged at the top of the heat carrier inlet pipe.
Still further, the top of the distribution chamber is provided with CO 2 An outlet tube.
Further, the discharging and distributing device comprises a heat carrier outlet pipe and a carbon carrying agent outlet pipe, and the heat carrier outlet pipe and the carbon carrying agent outlet pipe are arranged at the side wall of the lower part of the distributing chamber.
Still further, the carbon-carrying agent outlet pipe is provided with a conical valve.
Further, a self-balancing feed back valve is arranged on the heat carrier outlet pipe.
The beneficial effects are that:
1. the heat carrier is used as a calcination heat source, and the calciner is not provided with an oxygen-enriched combustion system. Investment and running cost can be reduced.
2. The calciner adopts a fluidized bed form and is provided with a relatively independent premixing chamber, a calcination reaction chamber and a distribution chamber, so that the carbon carrying agent and the heat carrier can be fully mixed, and stable decarburization reaction can be maintained.
3. The CO2 is adopted as the fluidization wind in the calciner, so that impurities in the system are not increased, the high purity of the CO2 calcined product is ensured, and the storage and transportation of downstream equipment are facilitated.
4. The outlet of the calciner can control the flow of the carbon carrying agent and the heat carrier, further control the material distribution of the carbon carrying agent and the heat carrier and control the scale of the calcination reaction.
5. The invention relates to an indirect heating calciner for capturing carbon by a calcium method, which can be used for calcining heat sources from high-temperature heat carriers (CaO particles) without arranging independent heating equipment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of a heat carrier indirectly heated carbon capture calciner of the present invention;
FIG. 2 is a top view of a heat carrier indirectly heated carbon capture calciner of the invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the purpose of facilitating an understanding of the embodiments of the invention, reference will now be made to the drawings of several specific embodiments illustrated in the drawings and in no way should be taken to limit the embodiments of the invention.
The first embodiment is as follows: a heat carrier indirect heating type carbon capturing calciner comprises an incoming material collecting device 1, a premixing chamber 2, a calcination reaction chamber 3, a distribution chamber 4, a discharging and distributing device 5 and CO 2 A fluidization wind system 6;
the incoming material collecting device 1, the premixing chamber 2, the calcination reaction chamber 3, the distribution chamber 4 and the discharging distribution device 5 are sequentially arranged from one end to the other end, and the premixing chamber 2, the calcination reaction chamber 3 and the distribution chamber 4 are all connected with CO 2 The fluidization wind system 6 is connected, and the incoming material collecting device 1 is used for injecting a heat carrier and a carbon carrying agent, wherein the heat carrier is a combustion heat source.
In this embodiment, the following will be described: the carbon carrying agent and the heat carrier are mixed in the premixing chamber and then enter the calcining reaction chamber for calcining reaction. The calcination reaction chamber adopts a fluidized bed form to realize the uniform mixing of the carbon carrying agent and the heat carrier. The reaction chamber adopts a larger volume, so that a longer residence time can be achieved; at the same time, the quantity of the heat carrier is more than that of the heat carrier, so that the reaction chamber has more heat capacity and is enough to maintain the calcination reaction of the heat carrier. The above measures can enable the calcining agent to be calcined to a greater extent.
The pre-mixing chamber, the calcining reaction chamber and the distributing chamber of the calcining furnace adopt CO 2 As a fluidizing wind. CO 2 From calcination reactions, cooling, dedusting and pressurizingAnd returned to the calciner. The premixing chamber, the calcining reaction chamber and the distribution chamber of the calciner are provided with independent air distribution plate structures and fluidization air flow control equipment, so that stable fluidization can be realized without mutual interference.
The second embodiment is as follows: a heat carrier indirectly heated carbon capture calciner according to claim 1, wherein one side of the upper end of the calcination reaction chamber 3 is connected to the premixing chamber 2, and the other side of the upper end of the calcination reaction chamber 3 is connected to the distribution chamber 4.
Other embodiments are the same as the first embodiment.
And a third specific embodiment: a heat carrier indirect heating type carbon capturing calciner, the bottom of the premixing chamber 2, the bottom of the calcination reaction chamber 3 and the bottom of the distribution chamber 4 are all connected with CO 2 The fluidization wind system 6 is connected.
Other embodiments are the same as the first embodiment.
The specific embodiment IV is as follows: the incoming material collecting device 1 comprises a heat carrier inlet pipe 1-1 and a carbon carrying agent inlet pipe 1-2, wherein the heat carrier inlet pipe 1-1 is connected with a premixing chamber 2, and the carbon carrying agent inlet pipe 1-2 is arranged at the top of the heat carrier inlet pipe 1-1.
In this embodiment, the following will be described: the calcium oxide is used as a heat carrier, and the heat is taken by an external heat source and then is conveyed into a premixing chamber of the calciner through a heat carrier inlet pipe. Carbon carrying agent (CaCO) 3 ) The initial collection is realized by conveying the carbon carrying agent inlet pipe to the tail end of the carbon carrying agent inlet pipe. The collected materials are in a premixing chamber, and the characteristic of fluidization of the fluidized bed materials is utilized to realize premixing.
Other embodiments are the same as the first embodiment.
Fifth embodiment: the top of the distribution chamber 4 is provided with CO 2 An outlet pipe 4-1.
In this embodiment, the following will be described: fluidized CO 2 CO produced by calcination 2 Collected at the top of the calciner, CO passing through the top of the distribution chamber 2 The outlet pipe is discharged.
Other embodiments are the same as the first embodiment.
Specific embodiment six: the discharging and distributing device 5 comprises a heat carrier outlet pipe 5-1 and a carbon carrying agent outlet pipe 5-2, and the heat carrier outlet pipe 5-1 and the carbon carrying agent outlet pipe 5-2 are arranged on the side wall of the lower part of the distributing chamber 4.
Seventh embodiment: a heat carrier indirect heating type carbon capture calciner is characterized in that a cone valve 5-3 is arranged on a carbon carrier outlet pipe 5-2.
In this embodiment, the following will be described: the conical valve structure is arranged on the carbon-carrying agent outlet pipeline, the section size of the carbon-carrying agent outlet pipeline can be adjusted by controlling the travel of the conical valve, and the flow of the carbon-carrying agent is controlled.
The other embodiments are the same as the sixth embodiment.
In the eighth embodiment, a self-balancing feed back valve 5-4 is arranged on the heat carrier outlet pipe 5-1.
In this embodiment, the following will be described: the heat carrier outlet pipe is provided with a self-balancing feed back valve structure, and under the condition of constant total flow, the flow of the carbon carrying agent is increased by reducing the flow of the carbon carrying agent, so that the ratio of the heat carrier to the carbon carrying agent is controlled.
The other embodiments are the same as the sixth embodiment.
Working principle:
1. the calcium oxide is used as a heat carrier, and the heat is taken by an external heat source and then is conveyed into a premixing chamber of the calciner through a heat carrier inlet pipe. Carbon carrying agent (CaCO) 3 ) The initial collection is realized by conveying the carbon carrying agent inlet pipe to the tail end of the carbon carrying agent inlet pipe. The collected materials are in a premixing chamber, and the characteristic of fluidization of the fluidized bed materials is utilized to realize premixing.
2. The carbon carrying agent and the heat carrier are mixed in the premixing chamber and then enter the calcining reaction chamber for calcining reaction. The calcination reaction chamber adopts a fluidized bed form to realize the uniform mixing of the carbon carrying agent and the heat carrier. The reaction chamber adopts a larger volume, so that a longer residence time can be achieved; at the same time, the quantity of the heat carrier is more than that of the heat carrier, so that the reaction chamber has more heat capacity and is enough to maintain the calcination reaction of the heat carrier. The above measures can enable the calcining agent to be calcined to a greater extent.
3. After the calcining agent is calcined, the calcining agent and the carbon-carrying agent are separated in a distribution chamber and enter downstream equipment for circulation. The distribution chamber is in the form of a fluidized bed to maintain fluidization of the material. The conical valve structure is arranged on the carbon-carrying agent outlet pipeline, the section size of the carbon-carrying agent outlet pipeline can be adjusted by controlling the travel of the conical valve, and the flow of the carbon-carrying agent is controlled. The heat carrier outlet pipe is provided with a self-balancing feed back valve structure, and under the condition of constant total flow, the flow of the carbon carrying agent is increased by reducing the flow of the carbon carrying agent, so that the ratio of the heat carrier to the carbon carrying agent is controlled. Carbon-carrying agent flow is reduced, CO 2 The scale of the adsorption and calcination reaction will decrease, so the scale of the reaction can be controlled.
4. The premixing chamber, the calcining reaction chamber and the distribution chamber of the calciner all adopt fluidized bed structures, and different material residence time is determined by selecting different bed body spaces and fluidization speeds.
5. The pre-mixing chamber, the calcining reaction chamber and the distributing chamber of the calcining furnace adopt CO 2 As a fluidizing wind. CO 2 From the calcination reaction, cooling, dedusting and pressurizing are carried out, and then the mixture is returned to the calciner. The premixing chamber, the calcining reaction chamber and the distribution chamber of the calciner are provided with independent air distribution plate structures and fluidization air flow control equipment, so that stable fluidization can be realized without mutual interference. Fluidized CO 2 CO produced by calcination 2 Collected at the top of the calciner, CO passing through the top of the distribution chamber 2 The outlet pipe is discharged.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (5)

1. The utility model provides a heat carrier indirect heating formula carbon entrapment calciner which characterized in that: it comprises an incoming material collecting device (1) and a premixing chamber2) A calcination reaction chamber (3), a distribution chamber (4), a discharge distribution device (5) and CO 2 A fluidization wind system (6);
the incoming material collecting device (1), the premixing chamber (2), the calcination reaction chamber (3), the distribution chamber (4) and the discharging distribution device (5) are sequentially arranged from one end to the other end, and the premixing chamber (2), the calcination reaction chamber (3) and the distribution chamber (4) are all connected with CO 2 The fluidization wind system (6) is connected;
the incoming material collecting device (1) comprises a heat carrier inlet pipe (1-1) and a carbon carrying agent inlet pipe (1-2), wherein the heat carrier inlet pipe (1-1) is connected with the premixing chamber (2), and the carbon carrying agent inlet pipe (1-2) is arranged at the top of the heat carrier inlet pipe (1-1);
one side of the upper end of the calcination reaction chamber (3) is connected with the premixing chamber (2), and the other side of the upper end of the calcination reaction chamber (3) is connected with the distribution chamber (4);
the bottom of the premixing chamber (2), the bottom of the calcination reaction chamber (3) and the bottom of the distribution chamber (4) are all connected with CO 2 The fluidized phoenix system (6) is connected.
2. A heat carrier indirectly heated carbon capture calciner as claimed in claim 1, wherein: the top of the distribution chamber (4) is provided with CO 2 An outlet pipe (4-1).
3. A heat carrier indirectly heated carbon capture calciner as claimed in claim 1, wherein: the discharging and distributing device (5) comprises a heat carrier outlet pipe (5-1) and a carbon carrying agent outlet pipe (5-2), and the heat carrier outlet pipe (5-1) and the carbon carrying agent outlet pipe (5-2) are arranged on the side wall of the lower part of the distributing chamber (4).
4. A heat carrier indirectly heated carbon capture calciner according to claim 3, wherein: and a conical valve (5-3) is arranged on the carbon carrying agent outlet pipe (5-2).
5. A heat carrier indirectly heated carbon capture calciner according to claim 3, wherein: the self-balancing feed back valve (5-4) is arranged on the heat carrier outlet pipe (5-1).
CN202210373265.0A 2022-04-11 2022-04-11 Heat carrier indirect heating type carbon capture calciner Active CN114751660B (en)

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Application Number Priority Date Filing Date Title
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CN114751660B true CN114751660B (en) 2023-06-27

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101792276B (en) * 2010-02-25 2011-12-21 东南大学 Method for producing partial full-oxygen type cement suitable for separation and collection of CO2
CN102773006B (en) * 2012-08-17 2014-06-18 西安瑞驰节能工程有限责任公司 Device and process for cyclic capture of carbon dioxide by taking CaO as carrier
CN202808618U (en) * 2012-08-17 2013-03-20 西安瑞驰节能工程有限责任公司 Device for catching carbon dioxide in lime production process
CN102786236B (en) * 2012-08-17 2014-05-07 西安瑞驰节能工程有限责任公司 Device and method for capturing carbon dioxide in lime production process
CN105854543B (en) * 2016-05-13 2018-03-20 东南大学 A kind of device and method of cooperative achievement fired power generating unit energy storage peak shaving and carbon capture

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