TWI725501B - 廢塑膠連續進料多管式裂解系統 - Google Patents
廢塑膠連續進料多管式裂解系統 Download PDFInfo
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Abstract
一種廢塑膠連續進料多管式裂解系統,係將廢塑膠材料連續投料,經粉碎、再進入篩選傳輸系統,在無氧狀態下進入裂解反應爐內部的多管式裂解輸送管,在裂解反應爐加熱產生的高溫狀態下,使該裂解輸送管在無氧環境中產生裂解碳及油氣,該油氣再進入冷凝系統分離出液態油及合成氣(Syn gas),該合成氣做為一次燃燒室燃料,而後將該燃燒之熱源提供給該裂解反應爐加熱;一燃燒系統由該裂解反應爐提供熱源,再進入二次燃燒室,以減少油污、空污,於此時加入氨水或尿素進行除氮氧化物,而後於急冷下加鹼液除硫氧化物,再由旋風分離器及過濾裝置分離微粒;本發明之熱源取自熱裂解製程,可完全自給自足,達到連續進料連續出料的快速裂解效益,且節省能源耗損、節省成本。
Description
本發明關於一種廢塑膠連續進料多管式裂解系統,其熱源取得來自廢塑膠混合物的裂解系統及冷卻模組,且應用無氧隔絕空氣,達到連續進料連續出料的快速製程,以及節省能源耗損、節省成本效益的技術領域。
先前習知批式罐爐式,逐批填充,經數小時裂解完成,經冷卻後取出裂解碳及爐渣清理才能再下一批進料。
習用系統之批式進料時間長,裂解時間長(5-10小時),等待冷卻時間長,未裂解碳及爐渣清理時間長。導致每一批式流程超過10小時,產量少、耗費人工且高熱作業相當消耗作業人員體力。
批式裂解時間長,裂解產生之合成氣並無法自給自足,須仰賴外加能源方能取得熱源。
本發明即是改善習用設備的缺失,可連續投入廢塑膠料後即可完成裂解,在極短的時間(幾分鐘內,甚至是幾秒內)完成達到連續出料的目的,又,裂解過程產生的合成氣能夠供應反應時的熱量達到自給自足,無須額外投入能源;具有省人工、產量大以及成本低廉等多重優點者。
本發明的主要目的即在於提供一種廢塑膠連續進料多管式裂解系統,回收廢塑膠料作為熱源的燃料,從中取得可回收的資源(裂解油、合成氣),於熱裂解的過程所產生的廢熱、碳黑也可以回收並二次燃燒,減少廢棄物之垃圾量,又,本發明內包含有冷卻模組及排除煙塵之過濾模組,進一步產生的氮氧化物(NOX)及硫氧化物(SOX)還原成無毒、無害的氣體、去除反應的微粒,達到環保、愛地球之目的。
本發明的次要目的在於提供一種種廢塑膠連續進料多管式裂解系統,其特徵在於能持續出料進行裂解,且反應時間短不需要額外的熱源進行反應,具有省人工、產量大以及成本低廉等多重優點者。
可以達到上述目的之結構者,包含有:一前置系統,所述的前置系統包含有一廢塑膠收集模組、一篩選模組、一粉碎模組及一塑膠押出模組;前述的廢塑膠收集模組將廢塑料集中後引導於該篩選模組,前述的篩選模組將廢塑料中挑出非塑料成分,將廢塑料交由該粉碎模組加以粉碎,接著由該塑膠押出模組之輸送管加熱至熔融狀態,該塑膠押出模組將熔融的廢塑料送往一裂解系統;前述的裂解系統包含有一裂解反應爐、一組一次燃燒室、一組二次燃燒室、一冷卻模組、一裂解油儲存槽及一裂解碳儲存槽;前述的裂解反應爐將該前置系統產生熔融的廢塑料通過該裂解反應爐內的一多管式裂解輸送管加熱,前述的廢塑料在該裂解輸送管為無氧狀態,透過加熱產生裂解碳及油氣混合液體;前述裂解反應爐的裂解輸送管內所產生的裂解碳透過一輸送管送往該裂解碳儲存槽;該裂解碳儲存槽具有一水過濾
模組將裂解碳與空氣隔離;所述的油氣混合液體經過該冷卻模組分解出裂解油與合成氣,前述的裂解油送往該裂解油儲存槽加以儲存,該合成氣(先進入該一次燃燒室燃燒提供該裂解反應爐熱源,加熱後產生的煙氣送入該二次燃燒室燃燒;一過濾系統包含有一熱媒熱交換器、一急冷卻裝置與一旋風分離模組所構成;前述的裂解反應爐產生的熱源引入該熱媒熱交換器,該熱媒熱交換器將高溫引導於該二次燃燒室;該二次燃燒室煙氣直接噴尿素或氨水,以消除氮氧化物(NOX),所述的旋風分離模組在一過濾空間內產生旋風將煙氣引導到一過濾裝置移除空氣的微粒,將過濾後的空氣由煙囪排除。
在某些實施例中,該塑膠押出模組熱源來自該二次燃燒室,使該輸送管之溫度在攝氏300度以下,提供廢塑料預熱及排除水份,以增進熱裂解效率及該輸送管輸送廢塑料的量增加。
在某些實施例中,該塑膠押出模組的輸送管壓縮比較大的中段位置設一透氣孔,以利水蒸氣排出。
在某些實施例中,該塑膠押出模組的輸送管末端設一閥門,作為洩壓用途(習知部分忽略贅述)。
在某些實施例中,該裂解反應爐內被加熱溫度在攝氏380至500度,其內設有數支連貫來回的裂解輸送管,該每一裂解輸送管內皆設有螺旋輸送桿,且無氧狀態下其溫度約在攝氏380至500度狀態。
該裂解輸送管內的裂解碳透過增加輸送管長度,使其在絕氧下自然降溫至室溫狀態,方可接觸空氣;因此,將該輸送管末端浸入水
中,以液面隔離空氣,避免空氣逆流入管內。
該冷卻模組控制在攝氏36度以下,使一合成氣(Syn gas)以水洗或微鹼液入一氣體緩衝槽處理,將合成氣進入該一次燃燒室燃燒,其溫度約攝氏1000度,再以一風車將此溫度送入該裂解反應爐內對裂解輸送管(211)加熱。
該二次燃燒室的溫度約攝氏850度以上,該煙氣至少停留在該二次燃燒室至少3秒,使該煙氣成分燃燒更完全,減少油污及空污。
該二次燃燒室煙氣直接噴尿素或氨水以除氮氧化物(NOX)再被引入急冷卻裝置降溫至約攝氏200度,再以加鹼設備噴鹼液,以消除硫氧化物(SOX)。
透過本發明的熱裂解系統,可增進裂解效率、節省成本、降低消耗,達到環保及節能效益。
(1):前置系統
(11):廢塑膠收集模組
(12):篩選模組
(13):粉碎模組
(14):塑膠押出模組
(141):透氣孔
(2):裂解系統
(21):裂解反應爐
(211):裂解輸送管
(211a):圓形或橢圓形輸送管
(212):螺旋輸送桿
(2121):螺旋部
(2122):本體
(20):合成氣流道
(22):一次燃燒室
(23):二次燃燒室
(24):冷卻模組
(25):裂解油儲存槽
(26):裂解碳儲存槽
(3):過濾系統
(31):熱媒熱交換器
(32):急冷卻裝置
(33):旋風分離模組
(331):過濾空間
(332):過濾裝置
(34):煙囪
(A):裂解碳
(B):油氣混合液體
(B1):裂解油
(B2):合成氣
第1圖係本發明之熱裂解系統圖。
第2圖係本發明之塑膠押出模組送管結構示意圖。
第3圖係本發明之裂解輸送管結構示意圖。
第4圖係本發明之裂解系統細部流程圖。
第5圖係本發明過濾系統細部方塊圖。
第6圖係旋風分離模組結構圖。
第7圖係本發明之流程方塊圖。
請參閱第1至7圖,本發明之廢塑膠連續進料多管式裂解系統主要包含有:一前置系統(1)、一裂解系統(2)、一過濾系統(3)所構成。
如第2圖所示,所述的前置系統(1)包含有一廢塑膠收集模組(11)、一篩選模組(12)、一粉碎模組(13)及一塑膠押出模組(14);前述的廢塑膠收集模組(11)將廢塑料集中後引導於該篩選模組(12),前述的篩選模組(12)透過人力或者磁鐵的磁力將廢塑料中挑出非塑料成分,將廢塑料交由該粉碎模組(13)加以粉碎,接著由該塑膠押出模組(14)之輸送管加熱至熔融狀態,該塑膠押出模組(14)將熔融的廢塑料送往該裂解系統(2)。
請參閱第2、3圖所示,該塑膠押出模組(14)熱源來自二次燃燒室(23),使該輸送管之溫度在攝氏250~300度,提供廢塑料預熱及排除水份,以增進熱裂解效率及該輸送管輸送廢塑料的量增加;再者為了達到前述排除水分(水蒸氣)之目的,該塑膠押出模組(14)的輸送管壓縮比較大的中段位置設一透氣孔(141),以利水蒸氣排出;此外,該塑膠押出模組(14)的輸送管更包含有一保護機制,在該塑膠押出模組(14)的輸送管末端設一閥門,作為洩壓用途。
如第2、4至5圖所示,前述的裂解系統(2)包含有一裂解反應爐(21)、一組一次燃燒室(22)、一組二次燃燒室(23)、一冷卻模組(24)、一裂解油儲存槽(25)及一裂解碳儲存槽(26);前述的裂解反應爐(21)將該前置系統(1)產生熔融的廢塑料通過該裂解反應爐(21)內的一裂解輸送管(211)加熱,前述的廢塑料在該裂解輸送管(211)為無氧狀態,透過加熱產生裂解碳
(A)及油氣混合液體(B);前述裂解反應爐(21)產生的裂解碳(A)透過一輸送管(261)送往該裂解碳儲存槽(26);該裂解碳儲存槽(26)具有一水過濾模組(262)將裂解碳(A)與空氣隔離;所述的油氣混合液體(B)經過該冷卻模組(24)分解出裂解油(B1)與合成氣(B2),前述的裂解油(B1)送往該裂解油儲存槽(25)加以儲存,該合成氣(B2)先進入該一次燃燒室(22)燃燒提供該裂解反應爐(21)熱量,該裂解反應爐(21)產生的煙氣送入該二次燃燒室(23)燃燒。
如第4圖所示,該裂解反應爐(21)內被加熱溫度在攝氏380至500度,其內設有數支連貫來回的裂解輸送管(211),該每一裂解輸送管(211)內皆設有螺旋輸送桿(212),且無氧狀態下其溫度約在攝氏380至500度狀態;該裂解輸送管(21)內的裂解碳(A)透過增加輸送管長度,使其在絕氧下自然降溫至室溫狀態,方可接觸空氣;因此,將該輸送管末端浸入水中,以液面隔離空氣,避免空氣逆流入管內。
請參閱第4圖,該冷卻模組(24)控制在攝氏36度以下,使一合成氣(Syn gas)以水洗或微鹼液入一氣體緩衝槽(241)處理,將合成氣(B2)進入該一次燃燒室(22)燃燒,其溫度約攝氏1000度,再以一風車(242)將此溫度送入該裂解反應爐(21)內對裂解輸送管(211)加熱。
請參閱第4、5圖,該二次燃燒室(23)的溫度約攝氏850度以上,該煙氣至少停留在該二次燃燒室(23)至少3秒,使該煙氣成分燃燒更完全,減少油污及空污;該二次燃燒室(23)煙氣直接噴尿素或氨水以除氮氧化物(NOX)被引入急冷卻裝置(32)降溫至約攝氏200度,再以加鹼設備噴鹼液,以消除硫氧化物(SOX)。
如第1、5圖所示,前述的過濾系統(3)包含有一熱媒熱交換器(31)、一急冷卻裝置(32)與一旋風分離模組(33)所構成;前述的裂解反應爐(21)產生的熱源引入該熱媒熱交換器(31),該熱媒熱交換器(31)將高溫引導於該二次燃燒室(23);所述的急冷卻裝置(32)與該二次燃燒室(23)連接,用鹼液噴霧將硫氧化物(SOX)移除後送入一旋風分離模組(33),所述的旋風分離模組(33)在一過濾空間(331)內產生旋風將煙氣引導到一過濾裝置(332)移除空氣的微粒,將過濾後的空氣由煙囪(34)排除。
請參閱第7圖及配合第1至6圖之結構,本發明的操作流程為:
一前置作業(S1),係將廢塑料,經磁選、人工檢視或者視覺機械檢視後分離出非塑膠成份,再將廢塑膠透過粉碎模組(13)粉碎,其後以硫酸鋇或氯化鈣或碳酸納將水溶液調整至所需比重,使聚乙烯(PE)、聚丙烯(PP)、聚苯乙烯(PS)等浮上液面,同時將聚氯乙烯(PVC)沉澱予以排除;接著將廢塑料透過粉碎模組(13)粉碎成小片狀、碎塊,將廢塑料送往塑膠押出模組(14)加熱、熔融成類似液態的狀態,相較習用結構而言,本發明前置作業(S1)的優點能讓廢塑料快速乾燥,增進裂解效率與防止裂解時可能產生的阻塞問題。
一裂解作業(S2),將前述熔融的廢塑料送入該裂解反應爐(21)加熱裂解,如第6圖所示,該裂解反應爐(21)內的裂解輸送管(211)設置螺旋輸送桿(212),該裂解輸送管(211)製成一圓形或橢圓形裂解輸送管(211a);該螺旋輸送桿(212)由一螺旋部(2121)與一圓柱形的本體(2122)組成,設置在該輸送管(211a)內,且該螺旋部(2121)的切線接近該橢圓形
或圓形輸送管(211a)的底端,藉由此設計能將裂解過程產生的油氣混合液體(B)以該螺旋部(2121)完整推送,而該合成氣(B2)則以該螺旋部(2121)頂端與該橢圓形或圓形輸送管(211a)內壁之間的一合成氣流道(20)流動,使該油氣混合液體(B)與該合成氣(B2)加以分離;而裂解產生的裂解碳(A)經過裂解輸送管裂解碳溫度下降至室溫約攝氏36度以下,並以止逆裝置防止空氣逆流進入該無氧螺桿輸送管內,同時將該深入水中,以確保裂解碳與空氣隔離防止灰渣汙染。
請繼續參閱第6圖,在裂解作業(S2)中該油水混合液體(B)經冷卻模組(24)分離出裂解油(B1)與合成氣(B2);該合成氣(B2)經輸送管進入一次燃燒室(22)對裂解油氣燃燒,使熱氣經輸送管路進入裂解反應爐(21)加熱循環,而產生的裂解油(B1)則可透過裂解油儲存槽(25)加以回收、儲存。
請參閱第2、5圖,為了讓裂解油能快速回收,該冷卻模組(24)更包含有一水塔(243),透過水塔(243)提供冷卻水對裂解油(B1)降溫,如此,能讓回收到的裂解油(B1)快速回收、使用。
如第2、5圖所示,該二次燃燒室(23)的溫度約攝氏850度以上,該煙氣至少停留在該二次燃燒室(23)至少3秒,使該煙氣成分燃燒更完全,減少油污及空污。
如第1、6、7圖所示,一排放過濾作業(S3),前述的裂解反應爐(21)產生的熱源引入該熱媒熱交換器(31),該熱媒熱交換器(31)將高溫引導於該二次燃燒室(23)讓熱源回收再次使用;透過所述的急冷卻裝置(32)與該二次燃燒室(23)連接,用還原劑噴霧將氮氧化物移除後送入一旋風分
離模組(33),所述的旋風分離模組(33)在一過濾空間(331)內產生旋風將煙氣引導到該過濾裝置(332)移除空氣的微粒,將過濾後的空氣由煙囪(34)排除。
透過本發明的連續進料熱裂解及連續出料的製程,可增進裂解效率、節省成本、降低消耗,達到環保及節能效益。
需陳明者,以上所述乃是本發明之具體實施立即所運用之技術原理,若依本發明之構想所作之改變,其所產生之功能仍未超出說明書及圖式所涵蓋之精神時,均應在本發明之範圍內,合予陳明。
(1):前置系統
(11):廢塑膠收集模組
(12):篩選模組
(13):粉碎模組
(14):塑膠押出模組
(2):裂解系統
(21):裂解反應爐
(22):一次燃燒室
(23):二次燃燒室
(24):冷卻模組
(25):裂解油儲存槽
(26):裂解碳儲存槽
(3):過濾系統
(31):熱媒熱交換器
(32):急冷卻裝置
(33):旋風分離模組
(34):煙囪
Claims (10)
- 一種廢塑膠連續進料多管式裂解系統,主要包含有:一前置系統,所述的前置系統包含有一廢塑膠收集模組、一篩選模組、一粉碎模組及一塑膠押出模組;前述的廢塑膠收集模組將廢塑料集中後引導於該篩選模組,前述的篩選模組將廢塑料中挑出非塑料成分,將廢塑料交由該粉碎模組加以粉碎,接著由該塑膠押出模組之輸送管加熱至熔融狀態,該塑膠押出模組將熔融的廢塑料送往一裂解系統;前述的裂解系統,包含有一裂解反應爐、一組一次燃燒室、一組二次燃燒室、一冷卻模組、一裂解油儲存槽及一裂解碳儲存槽;前述的裂解反應爐將該前置系統產生熔融的廢塑料通過該裂解反應爐內的一裂解輸送管加熱,前述的廢塑料在該裂解輸送管為無氧狀態,透過加熱產生裂解碳及油氣混合液體;前述裂解反應爐產生的裂解碳透過一輸送管送往該裂解碳儲存槽;該裂解碳儲存槽具有一水過濾模組將裂解碳與空氣隔離;所述的油氣混合液體經過該冷卻模組分解出裂解油與合成氣,前述的裂解油送往該裂解油儲存槽加以儲存,該合成氣先進入該一次燃燒室燃燒提供該裂解反應爐熱量,該裂解反應爐產生的煙氣送入該二次燃燒室燃燒;一過濾系統,包含有一熱媒熱交換器、一急冷卻裝置與一旋風分離模組所構成;前述的裂解反應爐產生的熱源引入該熱媒熱交換器,該熱媒熱交換器將高溫引導於該二次燃燒室;所述的急冷卻裝置與該二次燃燒室連接,用還原劑噴霧將氮氧化物移除後送入一旋風分離模組,所述的旋風分離模組在一過濾空間內產生旋風將煙氣引導到一過濾裝 置移除空氣的微粒,將過濾後的空氣由煙囪排除。
- 依據申請專利範圍第1項所述之廢塑膠連續進料多管式裂解系統,其中,該裂解反應爐內的裂解輸送管設置螺旋輸送桿,該裂解輸送管即為本系統之圓形或橢圓形的裂解輸送管;該螺旋輸送桿由一螺旋部與一圓柱形的本體組成,且設於該圓形或橢圓形裂解輸送管內,該螺旋部的切線接近該輸送管的底端,能將該熱裂解產生的油氣混合液體以該螺旋部完整推送,而該合成氣則以該螺旋部頂端與該圓形或橢圓形裂解輸送管內壁之間的一合成氣流道流動,使該油氣混合液體與該合成氣加以分離。
- 依據申請專利範圍第1項所述之廢塑膠連續進料多管式裂解系統,其中,該塑膠押出模組熱源來自該二次燃燒室,使該裂解輸送管之溫度在攝氏250~300度,提供廢塑料預熱及排除水份,以增進熱裂解效率及該輸送管輸送廢塑料的量增加。
- 依據申請專利範圍第1項所述之廢塑膠連續進料多管式裂解系統,其中,該塑膠押出模組的輸送管壓縮比較大的中段位置設一透氣孔,以利水蒸氣排出。
- 依據申請專利範圍第1項所述之廢塑膠連續進料多管式裂解系統,其中,該裂解反應爐內被加熱溫度在攝氏380至500度,其內設有數支連貫來回的裂解輸送管,該每一裂解輸送管內皆設有螺旋輸送桿,且無氧狀態下其溫度在攝氏380至500度狀態。
- 依據申請專利範圍第1項所述之廢塑膠連續進料多管式裂解系統,其中,該裂解輸送管內的裂解碳透過增加輸送管長度,使其在絕氧下自然降溫至室溫狀態,將該輸送管末端浸入水中,以液面隔離空氣,避免空氣逆 流入管內。
- 依據申請專利範圍第1項所述之廢塑膠連續進料多管式裂解系統,其中,該冷卻模組控制在攝氏36度以下,使一合成氣以水洗或微鹼液入一氣體緩衝槽處理,將合成氣進入該一次燃燒室燃燒,其溫度攝氏1000度,再以一風車將此溫度送入該裂解反應爐內對裂解輸送管加熱。
- 依據申請專利範圍第1項所述之廢塑膠連續進料多管式裂解系統,其中,該二次燃燒室的溫度攝氏850度以上,該煙氣至少停留在該二次燃燒室至少3秒,使該煙氣成分燃燒更完全,減少油污及空污。
- 依據申請專利範圍第1項所述之廢塑膠連續進料多管式裂解系統,其中,該二次燃燒室煙氣被引入急冷卻裝置降溫至攝氏200度,再以加鹼設備噴鹼液,以消除硫氧化物。
- 一種運用如申請專利範圍第1項所述之廢塑膠連續進料多管式裂解系統之方法,包含有:一前置作業S1,係運用該前置系統將廢塑料,經磁選、人工檢視或者視覺機械檢視後分離出非塑膠成份,再將廢塑膠透過粉碎模組粉碎,其後以硫酸鋇或氯化鈣或碳酸鈉將水溶液調整至所需比重,使聚乙烯(PE)、聚丙烯(PP)、聚苯乙烯(PS)浮上液面,同時將聚氯乙烯(PVC)沉澱予以排除;接著將廢塑料透過粉碎模組粉碎成粉末、碎塊,將廢塑料送往塑膠押出模組加熱、熔融成類似液態的狀態;一裂解作業(S2)運用前述的裂解系統,將前述熔融的廢塑料送入該裂解反應爐內對裂解輸送管加熱裂解,以形成裂解碳與油氣混合液體,透過冷卻模組取得裂解油,與合成氣,裂解油透過該裂解油儲存槽儲存,裂 解碳透過該裂解碳儲存槽儲存,該合成氣透過一次燃燒室加熱提供該裂解反應爐熱源;一排放過濾作業(S3)運用前述的過濾系統,將裂解反應時產生的空氣加以過濾、排放。
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