RU2012142676A - Способ адсорбционной сушки очищенного биогаза и регенерация загруженных адсорбентов - Google Patents

Способ адсорбционной сушки очищенного биогаза и регенерация загруженных адсорбентов Download PDF

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RU2012142676A
RU2012142676A RU2012142676/05A RU2012142676A RU2012142676A RU 2012142676 A RU2012142676 A RU 2012142676A RU 2012142676/05 A RU2012142676/05 A RU 2012142676/05A RU 2012142676 A RU2012142676 A RU 2012142676A RU 2012142676 A RU2012142676 A RU 2012142676A
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regeneration
biomethane
biogas
layers
silica gel
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RU2012142676/05A
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Лотар ГЮНТЕР
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Дге Др.-Инж. Гюнтер Инжиниринг Гмбх
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Abstract

1.Способ адсорбционной сушки очищенного биогаза (биометана) с содержанием метана минимум 90 об.% и регенерации загруженных адсорбентов при использовании как минимум двух адсорберов, содержащих твердые адсорбенты в качестве свободной сыпучей массы, которые загружают попеременно и регенерируют при использовании потока нагретого газа, отличающийся тем, что сушку и регенерацию проводят в закрытом контуре с использованием биогаза, причем в качестве адсорбента используют разделенные слои на основе силикагеля и молекулярных сит, биогаз, подлежащий сушке, сначала пропускают сквозь слой силикагеля, а для регенерации адсорбента используют исключительно нагретый высушенный биометан с температурой до 150°C, который после контакта с адсорбентом вновь выводят в исходный поток очищенного биогаза, а после прохождения регенерации охлажденный, высушенный биометан, который затем вновь выводят в исходный поток, вводят в контакт с адсорбентом, и воду с метаном, полученную в результате сушки и регенерации, вновь подают на ступень производства и/или очистки биогаза.Способ по п. 1, отличающийся тем, что из очищенного биогаза (биометана) перед подачей в адсорбер была удалена часть воды посредством охлаждения.Способ по п. 1, отличающийся тем, что слой из силикагеля образован как минимум из двух слоев, нижнего макропористого и верхнего мезопористого слоев, и соотношение нижнего слоя с верхним в числовом отношении составляет от 1:1 до 1:4.Способ по п. 1, отличающийся тем, что слой из силикагеля образован как минимум из двух слоев различных силикагелей, причем пространство между этими двумя слоями нагревают при помощи внешнего источника т�

Claims (11)

1.Способ адсорбционной сушки очищенного биогаза (биометана) с содержанием метана минимум 90 об.% и регенерации загруженных адсорбентов при использовании как минимум двух адсорберов, содержащих твердые адсорбенты в качестве свободной сыпучей массы, которые загружают попеременно и регенерируют при использовании потока нагретого газа, отличающийся тем, что сушку и регенерацию проводят в закрытом контуре с использованием биогаза, причем в качестве адсорбента используют разделенные слои на основе силикагеля и молекулярных сит, биогаз, подлежащий сушке, сначала пропускают сквозь слой силикагеля, а для регенерации адсорбента используют исключительно нагретый высушенный биометан с температурой до 150°C, который после контакта с адсорбентом вновь выводят в исходный поток очищенного биогаза, а после прохождения регенерации охлажденный, высушенный биометан, который затем вновь выводят в исходный поток, вводят в контакт с адсорбентом, и воду с метаном, полученную в результате сушки и регенерации, вновь подают на ступень производства и/или очистки биогаза.
2. Способ по п. 1, отличающийся тем, что из очищенного биогаза (биометана) перед подачей в адсорбер была удалена часть воды посредством охлаждения.
3. Способ по п. 1, отличающийся тем, что слой из силикагеля образован как минимум из двух слоев, нижнего макропористого и верхнего мезопористого слоев, и соотношение нижнего слоя с верхним в числовом отношении составляет от 1:1 до 1:4.
4. Способ по п. 1, отличающийся тем, что слой из силикагеля образован как минимум из двух слоев различных силикагелей, причем пространство между этими двумя слоями нагревают при помощи внешнего источника тепла.
5. Способ по п. 1, отличающийся тем, что биометан, используемый для регенерации и имеющий температуру от 110 до 150°C, проводят сквозь сыпучую массу, причем постоянно производят измерение температуры выходящего биометана, и после подъема температуры на выходе с 40 до 50°C подачу биометана прекращают.
6. Способ по п. 1, отличающийся тем, что биогаз, подлежащий сушке, без напора или при незначительном превышении давления до 1 бар закачивают через адсорбер.
7. Способ по п. 1, отличающийся тем, что объемное соотношение первого слоя (силикагеля) со вторым слоем (молекулярными ситами) составляет от 20:1 до 3:1.
8. Способ по п. 1, отличающийся тем, что продолжительность адсорбции составляет от 12 до 14 ч и доля воды в высушенном биометане сокращают до менее чем 20 мг/Нм3.
9. Способ по п. 1, отличающийся тем, что регенерированные адсорбенты перед повторным использованием охлаждают с применением охлажденного биометана (температура от 5 до 15°C) до температуры от 10 до 30°C.
10. Способ по п. 1, отличающийся тем, что во время регенерации как минимум нижнюю часть адсорбера подвергают непрямому нагреву.
11. Способ по п. 1, отличающийся тем, что регенерацию загруженного адсорбера производят при пониженном давлении.
RU2012142676/05A 2010-03-12 2011-03-08 Способ адсорбционной сушки очищенного биогаза и регенерация загруженных адсорбентов RU2012142676A (ru)

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