Selection
To select a methodology for H2S and CO2 removal it should be taken into account (Treybal,
1996):
The volumetric flow of biogas
The amount of H2S and CO2 to be removed and their desired final concentrations
Availability of environmentally safe disposal methods for the saturated reagents
Requirements regarding the recovery of valuable components such as S
Cost
Table 2 and table 3 show that most of the existing methods for H2S and CO2 removal are
appropriate for either small scale with low H2S and CO2 concentration or large scale with
high pressure drops. Applications with intermediate volumetric flows, high H2S and CO2
content and minimum pressure drop, as in the present case, are atypical. Table 3 shows that
for the case of H2S, in the present application, the most appropriate methods are amines and
iron oxides, which also absorb CO2. Iron oxides are meant for small to medium scale
applications while amines are meant for large scale applications. Amines have higher H2S
and CO2 absorbing efficiency than iron oxides. Both methods have problems with
disposition of saturated reagents. Even though amines are costly, they can be regenerated,
and depending on the size of the application they could become economically more
attractive than iron oxides. Both methods were selected for the present applications.
However in this document, results only for the case of amines are reported.
SelectionTo select a methodology for H2S and CO2 removal it should be taken into account (Treybal,1996): The volumetric flow of biogas The amount of H2S and CO2 to be removed and their desired final concentrations Availability of environmentally safe disposal methods for the saturated reagents Requirements regarding the recovery of valuable components such as S CostTable 2 and table 3 show that most of the existing methods for H2S and CO2 removal areappropriate for either small scale with low H2S and CO2 concentration or large scale withhigh pressure drops. Applications with intermediate volumetric flows, high H2S and CO2content and minimum pressure drop, as in the present case, are atypical. Table 3 shows thatfor the case of H2S, in the present application, the most appropriate methods are amines andiron oxides, which also absorb CO2. Iron oxides are meant for small to medium scaleapplications while amines are meant for large scale applications. Amines have higher H2Sand CO2 absorbing efficiency than iron oxides. Both methods have problems withdisposition of saturated reagents. Even though amines are costly, they can be regenerated,and depending on the size of the application they could become economically moreattractive than iron oxides. Both methods were selected for the present applications.However in this document, results only for the case of amines are reported.
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Selection
To select a methodology for H2S and CO2 removal it should be taken into account (Treybal,
1996):
The volumetric flow of biogas
The amount of H2S and CO2 to be removed and their desired final concentrations
Availability of environmentally safe disposal methods for the saturated reagents
Requirements regarding the recovery of valuable components such as S
Cost
ตารางที่ 2 และตารางที่ 3 แสดงให้เห็นว่าส่วนใหญ่ของที่มีอยู่ วิธีการ h2s และกำจัด CO2
ที่เหมาะสมให้กับ h2s ต่ำ ขนาดเล็ก และขนาดใหญ่ ที่มีความเข้มข้นของ CO2 หรือ
ลดลงความดันสูง การไหล h2s ปริมาตรกลาง , สูงและเนื้อหา CO2
และความดันลดลงต่ำสุด เช่นในกรณี ปัจจุบันจะผิดปกติ ตารางที่ 3 แสดงให้เห็นว่าในกรณีของ h2s
, in the present application, the most appropriate methods are amines and
iron oxides, which also absorb CO2. Iron oxides are meant for small to medium scale
applications while amines are meant for large scale applications. Amines have higher H2S
and CO2 absorbing efficiency than iron oxides. Both methods have problems with
disposition of saturated reagents. Even though amines are costly,พวกเขาสามารถ regenerated
และขึ้นอยู่กับขนาดของโปรแกรมที่พวกเขาสามารถกลายเป็นประหยัดมากขึ้น
มีเสน่ห์กว่าออกไซด์ของเหล็ก ทั้งสองวิธีเลือกการใช้งานปัจจุบัน .
แต่ในเอกสารนี้ ผลเท่านั้นสำหรับกรณีของเอมีนรายงาน
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