TWI684566B - Method for preparing biomass carbon and method for preparing soil improver and biomass fuel using this method - Google Patents
Method for preparing biomass carbon and method for preparing soil improver and biomass fuel using this method Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
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Abstract
一種生質碳的製備方法,包含提供一生質材料;提供包含二氧化碳之一電漿氣體,使該電漿氣體在300℃至500℃及1大氣壓下產生一二氧化碳電漿,其中,該二氧化碳佔該電漿氣體之體積百分比為1 v/v %至10 v/v %;及使該生質材料在該二氧化碳電漿作用下進行熱裂解反應15至60秒以形成一生質碳。本發明之生質碳製備方法可以有效提高利用生質材料之處理效率,且可應用於土壤改良及生質燃料的用途。 A method for preparing biomass carbon, including providing a biomass material; providing a plasma gas containing carbon dioxide, so that the plasma gas generates a carbon dioxide plasma at 300 to 500° C. and 1 atmosphere pressure, wherein the carbon dioxide accounts for the The volume percentage of plasma gas is 1 v/v% to 10 v/v %; and the biomass material is subjected to a thermal cracking reaction under the action of the carbon dioxide plasma for 15 to 60 seconds to form biomass carbon. The method for preparing biomass carbon of the present invention can effectively improve the processing efficiency of utilizing biomass materials, and can be applied to the use of soil improvement and biomass fuel.
Description
本發明係有關於一種生質碳的製備方法,特別是有關於使用二氧化碳電漿處理生質材料以製備生質碳的方法。 The invention relates to a method for preparing biomass carbon, in particular to a method for preparing biomass carbon by using carbon dioxide plasma to treat biomass materials.
生質碳(Biochar)是一種在缺氧或低氧的環境中將有機物質加熱分解所得的固態產物,具有多孔性的結構,因此生質碳具有極佳的吸附力,不僅可以吸附二氧化碳等溫室氣體,也可以改善土壤酸化的現象、提升土壤保水能力。此外,生質碳是有機類物質在熱分解的過程所留下的鹼性固態產物,因此生質碳亦可以用於土壤改質的用途。生質碳一般可以利用環境中的有機類廢棄物進行焙燒反應製成,例如可以利用農作物的廢棄物,例如椰子殼、廢稻殼、稻桿、果皮、果核等,將農作物的有機廢棄物利用焙燒的方式,再次製成具有利用價值的生質碳。近年來,由於生質碳在環境保護及農業上的應用逐漸廣泛,因此生質碳的製作方式亦受到大眾的重視。 Biochar is a solid product obtained by heating and decomposing organic substances in an oxygen-deficient or low-oxygen environment, and has a porous structure. Therefore, biochar has excellent adsorption, not only can adsorb carbon dioxide and other greenhouses Gas can also improve the phenomenon of soil acidification and enhance the soil's ability to retain water. In addition, biomass carbon is an alkaline solid product left by the thermal decomposition of organic substances, so biomass carbon can also be used for soil modification. Biomass carbon can generally be produced by roasting reaction of organic wastes in the environment. For example, crop wastes such as coconut husks, waste rice husks, rice straws, peels, and pits can be used to convert organic wastes from crops. Using roasting method, the biomass carbon with utilization value is made again. In recent years, due to the widespread use of biomass carbon in environmental protection and agriculture, the production method of biomass carbon has also attracted public attention.
傳統生質碳的製作方式,通常是利用焙燒的方法,將生質原料例如將前述的有機類廢棄物置入密閉且缺氧的反應爐中,再以200至500℃進行焙燒反應。在此焙燒反應過程中,可以降低生質原料的含水量,並且產生固態的生質碳及可作為生質燃料之 氣體。但是傳統的焙燒反應需要耗費較長的處理時間,例如是1~2小時,因此其產率不易提高,且焙燒過程需要耗費大量的熱能。 The traditional production method of biomass carbon is usually a method of roasting. The biomass raw materials, for example, the aforementioned organic wastes are placed in a closed and oxygen-deficient reaction furnace, and then the roasting reaction is performed at 200 to 500°C. In this roasting reaction process, the water content of the biomass raw material can be reduced, and solid biomass carbon can be produced and can be used as biomass fuel. gas. However, the traditional roasting reaction requires a long processing time, for example, 1 to 2 hours, so the yield is not easy to increase, and the roasting process requires a lot of heat energy.
因此,業界普遍需要一種可以快速且節能的焙燒過程,以提高生質碳的生產效率。。 Therefore, the industry generally needs a fast and energy-saving roasting process to improve the production efficiency of biomass carbon. .
根據以上說明,本發明之目的係為提供一種生質碳的製備方法,包含以下步驟:提供一生質材料;提供包含二氧化碳之一電漿氣體,使該電漿氣體在300℃至500℃及1大氣壓下產生一二氧化碳電漿,其中,該二氧化碳佔該電漿氣體之體積百分比為1 v/v %至10 v/v %;及使該生質材料在該二氧化碳電漿作用下進行熱裂解反應15至60秒以形成一生質碳。
According to the above description, the object of the present invention is to provide a method for preparing biomass carbon, which includes the following steps: providing a biomass material; providing a plasma gas containing carbon dioxide, such that the plasma gas is at 300°C to 500°C and 1 A carbon dioxide plasma is generated under atmospheric pressure, wherein the volume percentage of the carbon dioxide in the plasma gas is 1 v/v% to 10 v/v %; and the biomass material is subjected to thermal cracking reaction under the action of the
根據本發明之一實施例,其中,該電漿氣體更包含氦氣或氮氣其中之一。 According to an embodiment of the present invention, wherein the plasma gas further includes one of helium or nitrogen.
根據本發明之一實施例,其中,產生該二氧化碳電漿之方法包含將該電漿氣體通入一電漿熱處理設備之一電漿火炬系統以產生二氧化碳電漿火炬。 According to an embodiment of the present invention, the method for generating the carbon dioxide plasma includes passing the plasma gas into a plasma torch system of a plasma heat treatment device to generate a carbon dioxide plasma torch.
根據本發明之一實施例,其中,該電漿熱處理設備係加熱至300℃及該二氧化碳氣體之體積百分比為5 v/v %。 According to an embodiment of the present invention, wherein the plasma heat treatment equipment is heated to 300° C. and the volume percentage of the carbon dioxide gas is 5 v/v %.
根據本發明之一實施例,其中,該熱裂解反應時間為30秒。 According to an embodiment of the present invention, wherein the thermal cracking reaction time is 30 seconds.
根據本發明之一實施例,其中,更包含通入一水蒸汽,使該水蒸汽與該生質材料熱裂解所產生之一氣體進行熱氣化裂解反應。 According to an embodiment of the present invention, it further comprises passing a steam to make the steam and a gas generated by thermal cracking of the biomass material undergo a thermal gasification cracking reaction.
根據本發明之一實施例,其中,該生質材料包含營建木材廢棄物及果皮廢棄物。 According to an embodiment of the present invention, wherein the biomass material includes construction wood waste and peel waste.
根據本發明之一實施例,其中,更包含將生質材料先進行粉碎作業之步驟。 According to an embodiment of the present invention, it further includes the step of crushing the biomass material first.
另外,本發明更提供一種利用前述生質碳製備方法以製備土壤改良劑的方法,更包含二氧化碳佔電漿氣體之體積百分比為5 v/v %,並使電漿氣體在300℃及1大氣壓下產生二氧化碳電漿;使生質材料在二氧化碳電漿作用下進行熱裂解反應30秒,以形成生質碳;及將生質碳作為一土壤改良劑。 In addition, the present invention further provides a method for preparing a soil improver using the aforementioned biomass carbon preparation method, further comprising carbon dioxide in a volume percentage of plasma gas of 5 v/v %, and making the plasma gas at 300 ℃ and 1 atmosphere The carbon dioxide plasma is generated under the conditions; the biomass material is subjected to a thermal cracking reaction under the action of the carbon dioxide plasma for 30 seconds to form biomass carbon; and the biomass carbon is used as a soil improver.
更進一步地,本發明提供一種利用前述生質碳製備方法以製備生質燃料的方法,更包含二氧化碳佔電漿氣體之體積百分比為5 v/v %,並使電漿氣體在300℃及1大氣壓下產生二氧化碳電漿;使生質材料在二氧化碳電漿作用下進行熱裂解反應30秒,以形成生質碳;及將生質碳作為一生質燃料。 Furthermore, the present invention provides a method for preparing biomass fuel using the aforementioned biomass carbon preparation method, further comprising carbon dioxide in a volume percentage of plasma gas of 5 v/v %, and making the plasma gas at 300 ℃ and 1 The carbon dioxide plasma is generated under atmospheric pressure; the biomass material is subjected to a thermal cracking reaction under the action of the carbon dioxide plasma for 30 seconds to form biomass carbon; and the biomass carbon is used as a biomass fuel.
綜上所述,本發明之生質碳的製備方法可以有效提高利用生質材料之處理效率,且可應用於土壤改良及生質燃料的用途。 In summary, the method for preparing biomass carbon of the present invention can effectively improve the processing efficiency of utilizing biomass materials, and can be applied to the use of soil improvement and biomass fuel.
100‧‧‧電漿熱處理設備 100‧‧‧Plasma heat treatment equipment
10‧‧‧電漿氣體供應系統 10‧‧‧Plasma gas supply system
11‧‧‧氦氣瓶 11‧‧‧He cylinder
12‧‧‧二氧化碳氣瓶 12‧‧‧Carbon dioxide gas cylinder
20‧‧‧電源供應與冷卻系統 20‧‧‧Power supply and cooling system
21‧‧‧流量控制器 21‧‧‧Flow controller
22‧‧‧溫度監測系統 22‧‧‧Temperature monitoring system
30‧‧‧反應爐 30‧‧‧Reactor
31‧‧‧電漿火炬系統 31‧‧‧Plasma Torch System
32‧‧‧承接盤 32‧‧‧Take the plate
33‧‧‧排氣流量計 33‧‧‧Exhaust flow meter
40‧‧‧抽風設備 40‧‧‧Exhaust equipment
50‧‧‧蒸餾水設備 50‧‧‧ Distilled water equipment
圖1為本發明之一較佳實施例之生質碳製備方法流程圖;圖2為本發明較佳實施例之電漿熱處理設備示意圖;圖3為本發明較佳實施例之生質碳製備方法在不同CO2濃度下之生質碳產率及熱值比較圖; 圖4為本發明較佳實施例之生質碳製備方法在不同CO2濃度下之生質碳成分近似分析圖;圖5為本發明較佳實施例之生質碳製備方法在不同焙燒時間下之生質碳產率與熱值比較圖;及圖6為本發明較佳實施例之生質碳製備方法在不同焙燒時間下之生質碳成分近似分析圖。 1 is a flow chart of a method for preparing biomass carbon according to a preferred embodiment of the present invention; FIG. 2 is a schematic diagram of a plasma heat treatment apparatus according to a preferred embodiment of the present invention; Comparison chart of biomass carbon yield and calorific value of the method under different CO 2 concentrations; FIG. 4 is an approximate analysis chart of biomass carbon composition under different CO 2 concentrations of the biomass carbon preparation method of a preferred embodiment of the present invention; 5 is a comparison chart of biomass carbon yield and calorific value at different calcination times of the biomass carbon preparation method of the preferred embodiment of the present invention; and FIG. 6 is a calcination of the biomass carbon preparation method of the preferred embodiment of the invention at different calcinations Approximate analysis chart of biomass carbon composition under time.
為能更清楚地說明本發明,茲舉一較佳實施例並配合圖式詳細說明如後。參見圖1及圖2,圖1為本發明之一較佳實施例之生質碳製備方法流程圖,圖2為本發明較佳實施例之生質碳製備方法所使用的電漿熱處理設備。本發明之生質碳製備方法包含下列步驟: In order to explain the present invention more clearly, a preferred embodiment is described in detail below with reference to the drawings. 1 and 2, FIG. 1 is a flowchart of a method for preparing biomass carbon according to a preferred embodiment of the present invention, and FIG. 2 is a plasma heat treatment device used in the method for preparing biomass carbon according to a preferred embodiment of the present invention. The method for preparing biomass carbon of the present invention includes the following steps:
步驟S1:提供一生質材料。在本實施例中,係將一生質材料200置入一電漿熱處理設備100中。此生質材料200包含取自生物產生的有機物質,例如營建業廢棄物之木材與木屑等,或是農業廢棄物如稻殼、稻桿、蔗渣,或是廚餘類的果皮、果渣等,或是工業有機廢棄物如廢紙。在本實施例中,係利用營建用木材進行粉碎後之木屑做為生質材料的來源。
Step S1: Provide a biomass material. In this embodiment, a
步驟S2:提供包含二氧化碳之一電漿氣體,使電漿氣體在300℃至500℃下產生一二氧化碳電漿,其中,二氧化碳佔電漿氣體之體積百分比為1 v/v%至10 v/v%。在本實施例中,係將包含二氧化碳及氦氣之電漿氣體通入一電漿熱處理設備100中,其中二氧化碳佔整體電漿氣體之體積百分比為1 v/v%至10 v/v%,
使電漿熱處理設備100內之壓力為1至2atm,並且提供85至150伏特的電壓以啟動電漿熱處理設備100,使電漿熱處理設備100溫度加熱至300℃至500℃,以產生二氧化碳電漿。
Step S2: providing a plasma gas containing carbon dioxide, so that the plasma gas generates a carbon dioxide plasma at 300°C to 500°C, wherein the volume percentage of carbon dioxide in the plasma gas is 1 v/v% to 10 v/v %. In this embodiment, the plasma gas containing carbon dioxide and helium is passed into a plasma
步驟S3:使生質材料在二氧化碳電漿作用下進行熱裂解反應15至60秒,以形成一生質碳。在本實施例中,二氧化碳電漿藉由電漿熱處理設備100所包含之電漿火炬系統(詳述如下)通入置有生質材料之反應爐(詳述如下)中,使二氧化碳電漿與生質材料進行熱裂解反應15至60秒,以生成生質碳。
Step S3: The biomass material is subjected to thermal cracking reaction under the action of carbon dioxide plasma for 15 to 60 seconds to form a biomass carbon. In this embodiment, the carbon dioxide plasma is passed through the plasma torch system (detailed below) included in the plasma
電漿熱處理設備100可以是熱電漿、冷電漿、高週波電漿、火炬電漿、微波電漿、非傳輸型電漿或傳輸型電漿。在本實施例中,此電漿熱處理設備100為一火炬電漿的一種,其包含一電漿氣體供應系統10、一電源供應及冷卻系統20、反應爐30、抽風設備40及一蒸餾水設備50,其功能將分述如下:
電漿氣體供應系統10包含一氦氣瓶11及一二氧化碳氣瓶12,分別用以供應純度為99.99%之氦氣及純度為99.99%之二氧化碳氣體至反應爐30中。電源供應及冷卻系統20用以供應反應爐30產生電漿所需之電壓、電流,並對回流管線提供冷卻作用。
The plasma
其中,電源供應及冷卻系統20更包含一流量控制器21及一溫度監測系統22,其中,流量控制器21用以控制電漿氣體供應系統10流入反應爐30之電漿氣體的流量大小,亦即,用以控制流入反應爐30之氦氣及二氧化碳之氣體流量;溫度監測系統22則用以監測反應爐30內部的溫度。雖然在本實施例中,流量控制器21與溫度監測系統22係設置於電源供應及冷卻系統20中,但是在
其他實施例中,亦可以是分別獨立設置於電源供應及冷卻系統20之外。
Among them, the power supply and
反應爐30包含一電漿火炬系統31、一承接盤32及一排氣流量計33,用以進行電漿熱裂解反應。前述之電漿氣體供應系統10將所供應之氦氣及二氧化碳氣體,通入電漿火炬系統31,使得電漿氣體可以藉由電源供應系統20所供應之電壓及熱能形成高溫之二氧化碳電漿火炬,並引入至反應爐30中。生質材料200如木屑,係置放於承接盤32內,並透過二氧化碳電漿火炬進行熱裂解(焙燒)反應後,形成生質碳於承接盤32上。此外,排氣流量計33用以監測自反應爐排出之氣體。抽風設備40用以對反應爐30進行抽風作業。蒸餾水設備50用以提供水蒸汽至該反應爐中,提供生質材料進行熱裂解後,進行重組反應所需之水氣。雖然本實施例設置蒸餾水設備50用以提供重組反應所需之水氣,但是在其他實施例中亦可以不設置蒸餾水設備50。
The
以下提供數個實例說明本發明之生質碳製備方法。 Several examples are provided below to illustrate the preparation method of the biomass carbon of the present invention.
在以下數個實例中,生質材料重量皆為20公克,其來源係利用購買之營建用木材例如是松木材料,並進行粉碎製成粒徑約為2mm之粉狀顆粒而得。數個實例係分別於不同氣體濃度、反應溫度及反應時間之下進行生質材料之焙燒實驗。 In the following examples, the weight of the biomass material is 20 grams. The source is obtained from the purchased construction wood, such as pine material, and crushed to produce powder particles with a particle size of about 2 mm. Several examples are the roasting experiments of biomass materials under different gas concentrations, reaction temperatures and reaction times.
實例一 Example one
此實例係利用本發明之生質碳的製備方法,在300℃及1大氣壓下以相同條件之生質碳進行不同CO2濃度(包含體積百分比0 v/v%、5 v/v%及10 v/v%)之焙燒實驗,並控制生質材料與電漿火炬之接觸時間皆固定為30sec,之後再將各實驗組之生 質碳產率及熱值列於圖3。由圖3可知,本實例之生質材料在300℃及反應時間皆為30sec的條件下,當CO2的濃度愈高,所獲得之產物產率(即生質碳之產率)會下降,而其單位熱值(HHV,單位kcal/kg)會隨之增加。另外,請參見圖4,圖中顯示前述各實驗組所獲得之生質碳的成分近似分析。由圖4可知,當CO2的濃度愈高,所獲得之產物包含之可燃成份比例越高。根據此實例的實驗結果,產物產率的下降顯示二氧化碳電漿可以使生質材料表面產生快速的熱裂解反應,快速去除生質材料表面的雜質;單位熱值的提升顯示此熱裂解反應可以去除生質材料表面的水分,提高其可燃成分比例。因此,證實二氧化碳電漿有利於快速處理一般有機廢棄物難以分解的表面加工,例如是表面塗漆、環氧樹脂防水層等,以達到純化生質物的目的。本發明之生質碳製備方法的焙燒處理速率遠高於傳統的焙燒處理技術,可以有效提高利用生質材料之處理效率。根據本發明生質碳製備方法所製得之生質碳產物可以應用於生質燃料的用途,亦可以作為土壤改良劑之用途,本發明不以此為限。 This example uses the method for preparing biomass carbon of the present invention to perform different CO 2 concentrations (including volume percentages of 0 v/v%, 5 v/v%, and 10) at 300°C and 1 atmosphere of biomass carbon under the same conditions v/v%) roasting experiment, and control the contact time of the biomass material and the plasma torch to be fixed at 30sec, and then the biomass carbon yield and calorific value of each experimental group are listed in Figure 3. It can be seen from FIG. 3 that the biomass material of this example is at 300 ℃ and the reaction time is 30sec. When the concentration of CO 2 is higher, the yield of the obtained product (that is, the yield of biomass carbon) will decrease. The unit calorific value (HHV, unit kcal/kg) will increase accordingly. In addition, please refer to Fig. 4, which shows an approximate analysis of the composition of the biomass carbon obtained by the aforementioned experimental groups. It can be seen from FIG. 4 that the higher the CO 2 concentration, the higher the proportion of combustible components contained in the obtained product. According to the experimental results of this example, the decrease in product yield shows that carbon dioxide plasma can cause a rapid thermal cracking reaction on the surface of the biomass material and quickly remove impurities on the surface of the biomass material; an increase in the unit calorific value shows that the thermal cracking reaction can be removed The moisture on the surface of the biomass material increases the proportion of combustible components. Therefore, it is confirmed that carbon dioxide plasma is beneficial to the rapid processing of surface processing that is difficult for general organic waste to decompose, such as surface coating, epoxy resin waterproof layer, etc., to achieve the purpose of purifying biomass. The roasting treatment rate of the preparation method of the biomass carbon of the present invention is much higher than that of the traditional roasting treatment technology, which can effectively improve the processing efficiency of utilizing the biomass material. The biomass carbon product prepared according to the biomass carbon preparation method of the present invention can be applied to the use of biomass fuel, and can also be used as a soil improver, and the present invention is not limited thereto.
實例二 Example 2
此實例係利用本發明將本發明之生質碳的製備方法,在300℃、1大氣壓及CO2濃度固定為體積百分比5 v/v%之條件下,進行不同時間(15sec、30sec、45sec及60sec)之焙燒實驗,之後再將各實驗組之生質碳產率及熱值列於圖5。由圖5可知,本實例之生質材料在300℃及CO2濃度固定為體積百分比5 v/v%之條件下,當生質材料與二氧化碳電漿火焰接觸時間愈長,所獲得之產物產率(即生質碳之產率)會下降,而其單位熱值(HHV,單位kcal/kg)會隨之增加。另外,請參見圖6,圖中顯示前述各實驗組所獲得之生質碳的成分近似分析。由圖6可知,當反應時間增加,所獲得之產物包含之可燃成份比例越高。 This example uses the present invention to prepare the biomass carbon of the present invention under conditions of 300°C, 1 atm, and CO 2 concentration fixed at a volume percentage of 5 v/v% for different times (15sec, 30sec, 45sec, and 60sec) calcination experiment, and then the biomass carbon yield and calorific value of each experimental group are listed in Figure 5. It can be seen from FIG. 5 that the biomass material of this example is under the conditions of 300° C. and the CO 2 concentration is fixed at a volume percentage of 5 v/v%. When the biomass material is in contact with the carbon dioxide plasma flame for a longer time, the product produced The rate (i.e. the yield of biomass carbon) will decrease, and its unit heating value (HHV, unit kcal/kg) will increase accordingly. In addition, please refer to Fig. 6, which shows an approximate analysis of the composition of the biomass carbon obtained by the aforementioned experimental groups. It can be seen from FIG. 6 that as the reaction time increases, the proportion of combustible components contained in the obtained product is higher.
根據此實例之實驗結果,當反應時間為30sec時,生質碳的產率為83.77%,其熱值為4664.71kcal/kg,而當反應時間為45sec時,生質碳的產率會下降至66.68%。此實驗結果顯示反應時間為30sec時,已可對生質材料表面進行適度的焙燒反應,其表面雜質已被去除,而當反應時間延長至45sec時,則會使過多的成分因熱裂解反應而分解,使生質碳之產率降低。由於生質碳應用於土壤改良劑之用途時,主要係利用生質碳的表面結構特性,因此,當本發明生質碳製備方法應用於製備土壤改良劑之用途時,較佳之反應時間為30sec。 According to the experimental results of this example, when the reaction time is 30sec, the yield of biomass carbon is 83.77%, and its calorific value is 4664.71kcal/kg, and when the reaction time is 45sec, the yield of biomass carbon decreases to 66.68%. The experimental results show that when the reaction time is 30sec, the surface of the biomass material can be moderately roasted, and the surface impurities have been removed. When the reaction time is extended to 45sec, it will cause excessive components due to thermal cracking reaction. Decomposition reduces the yield of biomass carbon. Since biomass carbon is mainly used for the application of soil improvers, the surface structure characteristics of biomass carbon are mainly used. Therefore, when the method for preparing biomass carbon of the present invention is used for the preparation of soil improvers, the preferred reaction time is 30sec .
此外,請參見表3,表中所示為利用不同焙燒設備進行生質碳的製備效益及耗能分析結果。由表3可看出本發明之生質碳焙燒方法於同焙燒條件下具有最低耗能之產出效益。此結果證實使用二氧化碳電漿焙燒的方式,具有最快的反應效率且焙燒效益高,每單位時間之生質碳產出量(產出速率)與傳統高溫焙燒爐相比,可以提升約12.28倍。另外請參見表4,表中顯示前述各組實驗所獲得之生質碳的成份元素分析結果。由表中可知,利用本發明生質碳製備方法所製得之生質碳的氧/碳比(O/C)遠高於傳統焙燒方法之生質碳的氧/碳比,顯示本發明生質碳製備方法之焙燒效率高於傳統焙燒方法。 In addition, please refer to Table 3, which shows the results of analysis of the benefits and energy consumption of biomass carbon preparation using different roasting equipment. It can be seen from Table 3 that the biomass carbon roasting method of the present invention has the lowest energy-consuming output benefit under the same roasting conditions. This result confirms that the method of using carbon dioxide plasma roasting has the fastest reaction efficiency and high roasting efficiency. The biomass carbon output (output rate) per unit time can be increased by about 12.28 times compared with the traditional high-temperature roaster . In addition, please refer to Table 4, which shows the analysis results of the component elements of the biomass carbon obtained in the previous groups of experiments. It can be seen from the table that the oxygen/carbon ratio (O/C) of the biomass carbon prepared by the method for preparing biomass carbon of the present invention is much higher than that of the biomass carbon of the traditional roasting method, showing that the present invention The roasting efficiency of the qualitative carbon preparation method is higher than the traditional roasting method.
以上所述僅為本發明較佳可行實施例而已,舉凡應用本發明說明書及申請專利範圍所為之等效變化,理應包含在本發明之專利範圍內。 The above is only the preferred and feasible embodiments of the present invention, and any equivalent changes in applying the description of the present invention and the scope of patent application should be included in the patent scope of the present invention.
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