KR102139227B1 - Electricity production system using oyster shell - Google Patents

Abstract

The present invention relates to an electricity production system using oyster shells. According to the present invention, the electricity production system using oyster shells comprises: an input unit having oyster shells introduced therethrough; a firing furnace to fire the oyster shells to be separated into calcium oxide and carbon dioxide; a calcium oxide storage unit; a second transfer unit; a first heat exchange unit; a carbon dioxide storage unit; a second heat exchange unit; a reaction unit; a fourth transfer unit; a fifth transfer unit; a turbine; a third heat exchange unit; a discharge unit; and a fourth heat exchange unit. According to the present invention, waste resources can be utilized.

Description

Electricity production system using oyster shell}

The present invention relates to an electric production system using an oyster shell, and relates to an electric production system using an oyster shell to generate electricity by closing the energy generated during a reverse reaction of calcium carbonate.

While producing an average of 32,000 tons of oysters annually in the clean waters of the southern coast of Korea, the oyster shells generated as a by-product have caused many problems in economic and environmental aspects in that waste is generated [Gyeongsangnam-do," Treatment countermeasures, 1991 et al.]. Domestic production of oyster shells is about 280,000 to 300,000 tons, which is 9 times the annual production of oyster shells. Among them, 150,000 tons are accumulated or loaded in farms, processing facilities, or between collections of oyster shells, and more than 130,000 tons are recycled as harvesters, waste fossil fertilizers, etc. It has been reported that [Kwon Moon-sun, Park Sang-min, Hyuk-soo Kwon, "Effects of Sewage Sludge and Oyster Shell Land Injection on Soil Pollution Degree", Journal of the Korean Environmental Engineering Society, Vol. However, in practice, it can be estimated that the oyster shells used for harvesting are additionally generated as they are used as a new oyster culture and then remain as a by-product. Therefore, most of the generated oyster shells are not recycled, and are landfilled, neglected, or illegally littered around.

Korean Patent Publication No. 10-2018-0016009

In order to solve the above-mentioned problems, it is to provide an electricity production system using an oyster shell capable of producing electricity with energy generated by a reverse reaction process of calcium carbonate and producing natural fertilizer.

To achieve the above object, an electrical production system using an oyster shell according to the present invention includes an input unit in which an oyster shell is provided; A firing furnace connected to the input part and firing the oyster shell to separate into calcium oxide and carbon dioxide; A 1-1 transfer section connecting the input section and the firing furnace; A first 1-2 transfer section connecting the input section and the firing furnace; A calcium oxide storage unit connected to the firing furnace to store the calcium oxide; A second transfer part connecting the calcination furnace and the calcium oxide storage part; A first heat exchange unit provided at a point at which the first-1 transport unit and the second transport unit intersect to transfer heat from the second transport unit to the first-1 transport unit; A carbon dioxide storage unit connected to the kiln to store the carbon dioxide; A 3-1 transfer unit connecting the firing furnace and the carbon dioxide storage unit; A second heat exchange unit provided at a point where the first and second transport units and the 3-1 transport unit intersect to transfer the heat of the 3-1 transport unit to the first and second transport units; A reaction unit which is connected to the calcium oxide storage unit and the carbon dioxide storage unit and generates calcium carbonate by reacting the calcium oxide and the carbon dioxide; A fourth transfer unit connecting the calcium oxide storage unit and the reaction unit; A fifth transfer unit connecting the carbon dioxide storage unit and the reaction unit; A turbine connected to the reaction unit and operating with thermal energy generated by the reaction unit; A 3-2 transfer unit connecting one side of the turbine and the 3-1 transfer unit; A third heat exchange unit provided at a point where the 3-2 transport unit and the fourth transport unit intersect to transfer the heat of the 3-2 transport unit to the fourth transport unit; A discharge unit connected to the reaction unit to discharge calcium carbonate; And a fourth heat exchanger provided at a point where the discharge unit and the fifth transfer unit intersect and transfer heat of the discharge unit to the fifth transfer unit.

It is characterized in that it is configured to further include an electric generator that is connected to the turbine to generate electricity.

The firing furnace is characterized by firing the oyster shell at 900°C for 15 minutes.

A first step of putting oyster shells into the input unit; A second step in which the oyster shell is introduced into the kiln through the 1-1 conveying part and the 1-2 conveying part; A third step of calcining the oyster shell for 15 minutes at 900° C. in the firing furnace to separate into calcium oxide and carbon dioxide; A fourth step of transferring heat from the second transfer section to the 1-1 transfer section through the first heat exchange section while the calcium oxide moves to the calcium oxide storage section through the second transfer section; A fifth step of transferring heat from the 3-1 transport unit to the 1-2 transport unit through the second heat exchange unit while the carbon dioxide moves to the carbon dioxide storage unit through the 3-1 transport unit; A sixth step in which the calcium oxide is introduced into the reaction unit through the fourth transfer unit; A seventh step in which the carbon dioxide is introduced into the reaction unit through a fifth transfer unit; An eighth step of driving the turbine with carbon dioxide that has not reacted with thermal energy generated while the calcium oxide and the carbon dioxide react within the reaction unit; A ninth step of transferring heat from the 3-2 transfer unit to the fourth transfer unit through the third heat exchange unit while the carbon dioxide moves to the 3-1 transfer unit through the 3-2 transfer unit; A tenth step of transferring heat from the discharge portion to the fifth transfer portion through the fourth heat exchange portion while the calcium oxide and the carbon dioxide react in the eighth step to form calcium carbonate and move to the discharge portion; It characterized in that it consists of; in the eighth step, the eleventh step of generating electricity by driving the electric generator in the turbine.

In the electric production system using the oyster shell according to the present invention has the following effects.

It has the effect of actively replacing environmental problems such as odor and aesthetics due to oyster shells classified as industrial waste and utilizing waste resources.

It has the effect of capturing and converting carbon dioxide that has been caused by the existing plastic working.

1 is a view showing an electric production system using an oyster shell according to the present invention.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the electric production system using the oyster shell according to the present invention will be described in detail.

The electric production system using the oyster shell of the present invention includes an input part 10 provided with an oyster shell, a firing furnace 20 connected to the input part 10 to fire the oyster shell to separate into calcium oxide and carbon dioxide, and the input A first (1-1) transfer unit (30) connecting the unit (10) and the firing furnace (20), a first 1-2 transfer unit (31) connecting the input unit (10) and the firing furnace (20), and the firing furnace (20) ) Is connected to the calcium oxide storage unit 40 for storing the calcium oxide, the second transfer unit 32 for connecting the calcination furnace 20 and the calcium oxide storage unit 40, the 1-1 transfer unit 30 ) And the second transfer unit 32 are provided at the intersection of the first heat exchange unit 50 to transfer the heat of the second transfer unit 32 to the 1-1 transfer unit 30, the firing furnace 20 It is connected to the carbon dioxide storage unit 60 for storing the carbon dioxide, the 3-1 transfer unit 33 for connecting the firing furnace 20 and the carbon dioxide storage unit 60, the 1-2 transfer unit 31 and A second heat exchange unit (51) that is provided at a point where the 3-1 transport unit (33) intersects and transfers the heat of the 3-1 transport unit (33) to the 1-2 transport unit (31), and the calcium oxide It is connected to the storage unit 40 and the carbon dioxide storage unit 60, the reaction unit 70 for the reaction of the calcium oxide and the carbon dioxide to produce calcium carbonate, the calcium oxide storage unit 40 and the reaction unit ( 70) a fourth transfer unit 35, a fifth transfer unit 36 connecting the carbon dioxide storage unit 60 and the reaction unit 70, and the reaction unit 70 connected to the reaction unit 70 Turbine 80 operating with thermal energy generated from ), a 3-2 transfer unit 34 connecting the turbine 80 and one side of the 3-1 transfer unit 33, and the 3-2 transfer unit 34 And a third heat exchanger 52 and the reaction unit 70 that are provided at the intersection of the fourth transfer unit 35 and transfer the heat of the 3-2 transfer unit 34 to the fourth transfer unit 35. It is connected to the discharge portion 37 for discharging calcium carbonate, phase with the discharge portion 37 It is provided at a point where the fifth transfer unit 36 is crossed, and is composed of a fourth heat exchange unit 53 that transfers heat from the discharge unit 37 to the fifth transfer unit 36.

First, the input unit 10 is provided. An oyster shell is located inside the input part 10.

The firing furnace 20 is provided in connection with the input part 10. The firing furnace 20 fires the oyster shell. Here, the firing furnace 20 fires the oyster shell for 15 minutes at 900°C. At this time, the oyster shell is separated into calcium oxide and carbon dioxide. In addition, the calcium oxide and the carbon dioxide contain a large amount of heat at a high temperature.

The reaction scheme in which the oyster shell is fired is as follows.

CaCo ₃ -> CaO + CO ₂

A 1-1 transfer unit 30 is provided by connecting the input unit 10 and the firing furnace 20. Specifically, the 1-1 transfer unit 30 connects one side of the input unit 10 and one side of the firing furnace 20. The 1-1 transfer unit 30 transfers the shell shell provided in the input unit 10 to the firing furnace 20. A damper or the like is provided in the 1-1 transport unit 30 to adjust the supply amount of the oyster shells flowing into the firing furnace 20.

A 1-2 transfer unit 31 is provided by connecting the input unit 10 and the firing furnace 20. Specifically, the first 1-2 conveying part 31 connects the other side of the input part 10 and the other side of the firing furnace 20. The 1-2 transfer unit 31 transfers the oyster shell provided in the input unit 10 to the firing furnace 20. A damper or the like may be provided in the first and second transfer parts 31 to control the supply amount of the oyster shells flowing into the firing furnace 20.

A calcium oxide storage unit 40 is provided in connection with the firing furnace 20. The calcium oxide storage unit 40 stores the separated calcium oxide by being fired in the firing furnace 20.

A second transfer part 32 is provided by connecting the calcination furnace 20 and the calcium oxide storage part 40. The second transfer part 32 transfers the high-temperature calcium oxide separated inside the firing furnace 20 to the calcium oxide storage part 40. When the separation of the calcium oxide and the carbon dioxide in the firing furnace 20 is completed, a damper or the like is provided in the second transfer part 32, and the calcium oxide is stored in the calcium oxide storage part 40 through the second transfer part 32. ).

A first heat exchange unit 50 is provided at a point where the 1-1 transfer unit 30 and the second transfer unit 32 intersect. The first heat exchange unit 50 transfers the heat of the second transfer unit 32 to the first-1 transfer unit 30.

The first heat exchange unit 50 is preferably used a conventional heat exchanger, a metal tube or the like can be used, but is not limited thereto. In addition, it is possible to recycle heat that is not used and wasted through the first heat exchange unit 50.

The carbon dioxide storage unit 60 is provided in connection with the firing furnace 20. The carbon dioxide storage unit 60 stores the separated carbon dioxide by firing in the firing furnace 20.

A 3-1 transfer unit 33 is provided by connecting the firing furnace 20 and the carbon dioxide storage unit 60. The 3-1 transfer unit 33 transfers the high-temperature carbon dioxide separated inside the firing furnace 20 to the carbon dioxide storage unit 60. When the separation of the calcium oxide and the carbon dioxide in the firing furnace 20 is completed, a damper or the like is provided in the 3-1 transport unit 33, and the carbon dioxide is stored in the carbon dioxide through the 3-1 transport unit 33. (60).

A second heat exchange unit 51 is provided at a point where the 1-2 transfer unit 31 and the 3-1 transfer unit 33 intersect. The second heat exchange unit 51 transfers the heat of the 3-1 transfer unit 33 to the 1-2 transfer unit 31.

The second heat exchange unit 51 is preferably used a conventional heat exchanger, it is possible to use a metal tube, but is not limited thereto. In addition, it is possible to recycle heat that is not used and wasted through the second heat exchange unit 51.

The reaction unit 70 is provided in connection with the calcium oxide storage unit 40 and the carbon dioxide storage unit 60. In the reaction unit 70, the calcium oxide and the carbon dioxide react to generate high-temperature calcium carbonate. Specifically, the calcium oxide and the carbon dioxide react to generate calcium carbonate and thermal energy.

The reaction formula of the calcium oxide and the carbon dioxide is as follows.

CaO + CO ₂ -> CaCo ₃

A fourth transfer part 35 is provided by connecting the calcium oxide storage part 40 and the reaction part 70. The fourth transfer unit 35 transfers the calcium oxide stored in the calcium oxide storage unit 40 to the reaction unit 70. A damper or the like is provided in the fourth transfer part 35 to control the amount of calcium oxide supplied to the reaction part 70.

A fifth transfer unit 36 is provided by connecting the carbon dioxide storage unit 60 and the reaction unit 70. The fifth transfer unit 36 transfers the carbon dioxide stored in the carbon dioxide storage unit 60 to the reaction unit 70. A damper or the like may be provided in the fifth transfer part 36 to control the amount of carbon dioxide supplied to the reaction part 70.

Here, the supply amount is adjusted so that the calcium oxide and the carbon dioxide are mixed at a weight ratio of 56:44. It is preferable that the carbon dioxide is supplied more than 44 parts by weight, so that there is no calcium oxide discharged without being reacted by the reaction unit (70).

The turbine 80 is provided in connection with the reaction unit 70. The turbine 80 is operated with thermal energy generated by the reaction unit 70. Here, the carbon dioxide remaining unreacted in the reaction unit 70 may be supplied to the turbine 80.

A 3-2 transport section 34 is provided by connecting one side of the turbine 80 and the 3-1 transport section 33. The 3-2 transfer unit 34 transfers the carbon dioxide supplied to the turbine 80 to the carbon dioxide storage unit 60 through the 3-1 transfer unit 33.

A third heat exchange unit 52 is provided at a point where the 3-2 transfer unit and the fourth transfer unit 35 intersect. The third heat exchange unit 52 transfers the heat of the 3-2 transfer unit 34 to the fourth transfer unit 35.

The third heat exchange unit 52 is preferably a conventional heat exchanger, and a metal tube or the like can be used, but is not limited thereto. In addition, it is possible to recycle heat that is not used and wasted through the third heat exchange part 52.

The discharge unit 37 is provided in connection with the reaction unit 70. In the discharge unit 37, the calcium oxide reacts with the carbon dioxide in the reaction unit 70 to discharge the hot calcium carbonate. The calcium carbonate can be used as fertilizer.

A fourth heat exchange part 53 is provided at a point where the discharge part 37 and the fifth transfer part 36 intersect. The fourth heat exchange part 53 transfers the heat of the discharge part 37 to the fifth transfer part 36.

The fourth heat exchange part 53 is preferably a conventional heat exchanger, and a metal tube or the like can be used, but is not limited thereto. In addition, it is possible to recycle heat that is not used and wasted through the fourth heat exchange part 53.

An electricity generating unit 90 connected to the turbine 80 to generate electricity is further provided. The electricity generating unit 90 receives the power generated by the turbine 80 to generate electricity.

Hereinafter, the operation of the electric production system using the oyster shell according to the present invention will be described.

In the first step, the oyster shell is introduced into the input unit 10.

In the second step, the oyster shell is introduced into the firing furnace 20 through the 1-1 conveying part 30 and the 1-2 conveying part 31. Here, the amount of oyster shells flowing into the firing furnace 20 can be controlled through the dampers inside the 1-1 transport section 30 and the 1-2 transport section 31.

In the third step, the oyster shell is fired in the firing furnace 20. Specifically, the oyster shell is fired for 15 minutes at 900°C in the firing furnace 20 to separate the oyster shell into the calcium oxide and the carbon dioxide. Here, the separated calcium oxide and the carbon dioxide contain a large amount of heat at a high temperature.

In the fourth step, the calcium oxide is moved to the calcium oxide storage unit 40 through the second transfer unit 32. Here, the calcium oxide is transferred after the separation of the calcium oxide and the carbon dioxide is completed in the firing furnace 20 through a damper inside the second transfer part 32.

In addition, heat is transferred from the second transfer unit 32 to the first-1 transfer unit 30 through the first heat exchange unit 50. Accordingly, it is possible to recycle the heat that is not used and wasted.

In the fifth step, the carbon dioxide is moved to the carbon dioxide storage unit 60 through the 3-1 transfer unit 33. Here, the carbon dioxide is transferred after the separation of the calcium oxide and the carbon dioxide is completed in the firing furnace 20 through a damper inside the 3-1 transfer unit 33.

In addition, heat is transferred from the 3-1 transfer unit 33 to the 1-2 transfer unit 31 through the second heat exchange unit 51. Accordingly, it is possible to recycle the heat that is not used and wasted.

In the sixth step, the calcium oxide is introduced into the reaction unit 70 through the fourth transfer unit 35. Here, the amount of the calcium oxide flowing into the reaction unit 70 may be controlled through a damper inside the fourth transfer unit 35.

In the seventh step, the carbon dioxide is introduced into the reaction unit 70 through the fifth transfer unit 36. Here, the amount of carbon dioxide introduced into the reaction unit 70 may be controlled through a damper inside the fifth transfer unit 36.

In addition, the supply amount is adjusted so that the calcium oxide and the carbon dioxide are mixed at a weight ratio of 56:44. It is preferable that the carbon dioxide is supplied more than 44 parts by weight, so that there is no calcium oxide discharged without being reacted by the reaction unit (70).

In the eighth step, the calcium oxide and the carbon dioxide react inside the reaction unit 70. Accordingly, calcium carbonate and thermal energy are generated, and carbon dioxide remaining without reacting is generated. The thermal energy and the carbon dioxide drive the turbine 80.

In the ninth step, the carbon dioxide is transferred to the 3-1 transport unit 33 through the 3-2 transport unit 34. At this time, heat is transferred from the 3-2 transfer unit 34 to the fourth transfer unit 35 through the third heat exchange unit 52. Accordingly, it is possible to recycle the heat that is not used and wasted.

In the tenth step, the calcium carbonate formed by the reaction of the calcium oxide and the carbon dioxide in the eighth step moves to the discharge part 37. The calcium carbonate can be used as a fertilizer.

At this time, heat is transferred from the discharge part 37 to the fifth transfer part 36 through the fourth heat exchange part 53. Accordingly, it is possible to recycle the heat that is not used and wasted.

In the eleventh step, electricity is generated by the electricity generation unit with power generated by the turbine 80 in the eighth step.

As described above, it will be understood that the above-described technical configuration of the present invention can be implemented in other specific forms by those skilled in the art to which the present invention pertains without changing the technical spirit or essential characteristics of the present invention.

Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the claims below, rather than the detailed description, and the meaning and scope of the claims It should be construed that any altered or modified form derived from the equivalent concept is included in the scope of the present invention.

10: input part 20: firing furnace
30: 1-1 transfer section 31: 1-2 transfer section
32: 2nd transfer section 33: 3-1 transfer section
34: 3-2 transfer section 35: 4th transfer section
36: 5th transfer section 37: discharge section
40: calcium oxide storage unit 50: first heat exchange unit
51: second heat exchange section 52: third heat exchange section
53: fourth heat exchange unit 60: carbon dioxide storage unit
70: reaction unit 80: turbine
90: electricity generation department

Claims (4)

Oyster shell is provided input;
A firing furnace connected to the input part and firing the oyster shell to separate into calcium oxide and carbon dioxide;
A 1-1 transfer section connecting the input section and the firing furnace;
A first 1-2 transfer section connecting the input section and the firing furnace;
A calcium oxide storage unit connected to the firing furnace to store the calcium oxide;
A second transfer part connecting the calcination furnace and the calcium oxide storage part;
A first heat exchange unit provided at a point where the first-first transport unit and the second transport unit intersect to transfer heat from the second transport unit to the first-first transport unit;
A carbon dioxide storage unit connected to the kiln to store the carbon dioxide;
A 3-1 transfer unit connecting the firing furnace and the carbon dioxide storage unit;
A second heat exchange unit provided at a point where the first and second transfer units and the third and third transfer units intersect to transfer the heat of the third and first transfer units to the first and second transfer units;
A reaction unit which is connected to the calcium oxide storage unit and the carbon dioxide storage unit and generates calcium carbonate by reacting the calcium oxide and the carbon dioxide;
A fourth transfer unit connecting the calcium oxide storage unit and the reaction unit;
A fifth transfer unit connecting the carbon dioxide storage unit and the reaction unit;
A turbine connected to the reaction unit and operating with thermal energy generated by the reaction unit;
A 3-2 transfer unit connecting one side of the turbine and the 3-1 transfer unit;
A third heat exchange unit provided at a point where the 3-2 transport unit and the fourth transport unit intersect to transfer the heat of the 3-2 transport unit to the fourth transport unit;
A discharge unit connected to the reaction unit to discharge calcium carbonate;
And a fourth heat exchange unit provided at a point where the discharge unit and the fifth transfer unit intersect and transfer heat of the discharge unit to the fifth transfer unit. According to claim 1,
Electric production system using an oyster shell, characterized in that further comprises an electric generator for generating electricity connected to the turbine. According to claim 1,
The calcination furnace is an electric production system using an oyster shell, characterized in that for 15 minutes firing the oyster shell at 900 ℃. In the electric production system using the oyster shell according to claim 1,
A first step of putting oyster shells into the input unit;
A second step in which the oyster shell is introduced into the kiln through the 1-1 conveying part and the 1-2 conveying part;
A third step of calcining the oyster shell for 15 minutes at 900°C in the firing furnace to separate into calcium oxide and carbon dioxide;
A fourth step of transferring heat from the second transfer section to the 1-1 transfer section through the first heat exchange section while the calcium oxide moves to the calcium oxide storage section through the second transfer section;
A fifth step of transferring heat from the 3-1 transfer unit to the 1-2 transfer unit through the second heat exchange unit while the carbon dioxide moves to the carbon dioxide storage unit through the 3-1 transfer unit;
A sixth step in which the calcium oxide is introduced into the reaction unit through the fourth transfer unit;
A seventh step in which the carbon dioxide is introduced into the reaction unit through a fifth transfer unit;
An eighth step of driving the turbine with carbon dioxide that has not reacted with thermal energy generated while the calcium oxide and the carbon dioxide react within the reaction unit;
A ninth step of transferring heat from the 3-2 transfer unit to the fourth transfer unit through the third heat exchange unit while the carbon dioxide moves through the 3-2 transfer unit to the 3-1 transfer unit;
A tenth step of transferring heat from the discharge part to the fifth transfer part through the fourth heat exchange part while the calcium oxide and the carbon dioxide react in the eighth step to form calcium carbonate and move to the discharge part;
In the eighth step, the eleventh step of generating electricity by driving an electric generator in the turbine; an electric production system using an oyster shell and an electric production method using the same.

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