KR970020946A - 농축 공기 개질 및 합성 루프에로의 질소 주입에 의한 암모니아 제법 - Google Patents

농축 공기 개질 및 합성 루프에로의 질소 주입에 의한 암모니아 제법 Download PDF

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KR970020946A
KR970020946A KR1019960045115A KR19960045115A KR970020946A KR 970020946 A KR970020946 A KR 970020946A KR 1019960045115 A KR1019960045115 A KR 1019960045115A KR 19960045115 A KR19960045115 A KR 19960045115A KR 970020946 A KR970020946 A KR 970020946A
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ammonia
nitrogen
oxygen
synthesis
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죠셉 레이 르블랑
슈탄 에이. 네쯔
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왈포드 크레이그 더블유.
더 엠. 더블유. 켈로그 컴패니
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Abstract

연속한 제1 및 제2개질기 및 탄화수소 공급 재료, 증기 및 공기를 반응시켜 화학양론적 설계로 수소 및 질소로 이루어진 조성 합성 가스 스트림을 생성하기 위한 이동 전환기를 포함한 앞공정 및 재순환 합성 가스 스트림을 조성 가스와 배합하여 합성 가스 공급 재료를 생성하여 암모니아 전환기로 보내는 합성 루프를 갖는, 암모니아 공장의 생산 용량을 증가시키기 위한 레트로피트(retrofit)방법. 레트로피트 방법은 공기 분리 장치를 설치하여 산소 및 질소 스트림을 공급하는 것을 수반한다. 산소는 제2개질기로 공급되는 공기를 농축하는데 사용되어 실질적으로 설계 화학양론 및 용량을 능가하는 조성 가스의 수소 함량을 증가 시킨다. 질소 스트림을 합성루프로 공급하여 합성 가스 공급 재료 내에서 원하는 수소 대 질소비를 수득하여 암모니아 전환기로 보내어 조성 가스에서 과잉 수소를 보충한다. 원한다면, 합성 루프를 개선하여 고 활성 촉매 전환기를 포함시켜 암모니아 생산을 증가 시킨다.

Description

농축 공기 개질 및 합성 루프에로의 질소 주입에 의한 암모니아 제법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 공기 분리 장치를 포함하는 암모니아 공정의 농축 공기/질소를 주입하는 것을 도식적으로 나타낸 것이다.

Claims (20)

  1. 연속된 제1 및 제2개질기 및 탄화수소 공급 재료, 증기 및 공기를 반응시켜 화학양론적 설계상 수소 및 질소로 이루어진 조성 합성 가스 스트림을 생성하기 위한 고온 및 저온 이동 전환기를 포함하는 앞공정, 및 재순환 합성 가스 스트림을 조성 가스와 배합하여 합성 가스 공급 재료를 형성하고 암모니아 전환기로 보내는 합성 루프를 갖는 암모니아 공장의 생산 용량을 증가 시키기 위한 레트로피트 방법으로서 : 제2개질기에로 공급되는 공기를 산소로써 농축시키고 실질적으로 설계 양론 이상으로 조성 가스의 수소 함량을 증가시키는 단계; 실질적으로 순수한 질소 스트림을 합성 루프에 공급하여 합성 공급 재료내에 원하는 수소 대 질소비를 수득하여 암모니아 전환기로 보내는 단계로 이루어지는 레트로피트 방법.
  2. 제1항에 있어서, 농축-단계에서 공기에 첨가되는 산소-농축 스트림 및 실질적으로 순수한 질소 스트림원으로서 사용된 질소-농축 스트림을 생성하기 위한 공기 분리 장치의 설치를 포함하는 방법.
  3. 제2항에 있어서, 암모니아 공장의 현재 합성 루프 용량이 레트로피트 이전의 현재 앞공정의 용량을 초과하는 방법.
  4. 제1항에 있어서, 레트로피트 전에 현재 앞 공정의 용량을 초과하도록 합성 루프의 용량을 증가 시키기 위한 합성 루프 변형 단계를 더 포함하는 방법.
  5. 제1항에 있어서, 암모니아 공장이 합성 루프에 대한 조성 합성 가스 스트림을 좌우하는 탄소 산화물을 제거하기 위한 메탄 발생 장치를 포함하고, 질소 공급 단계는 질소 스트림을 메탄 발생 장치로부터 상류에서 보정 합성 가스 스트림내로 주입하는 것으로 이루어지는 방법.
  6. 제1항에 있어서, 질소 스트림에 필수적으로 산소 및 산소 화합물이 없고 질소 스트림을 조성 합성 가스 스트림에 첨가하는 방법.
  7. 제1항에 있어서, 질소 스트림에 필수적으로 산소 및 산소 화합물이 없고 질소 스트림을 합성 가스 공급 재료에 주입하는 방법.
  8. (1) 탄화수소 공급 재료 스트림을 증기 및 압축된 공기와 반응시켜 선재하는 용량으로 설계 HN 비를 갖는 조성 합성 가스 스트림을 생산하는 제1개질기, 제2개질기, 공기 압축기 및 CO2제거 장치를 포함하는 앞공정, 및(2) 선재하는 용량으로 암모니아를 생산하기 위해 재순환 합성 가스 스트림을 조성 합성 가스 스트림과 배합하여 합성 가스 공급 재료를 생성하여 암모니아 전환기로 보내는 합성 루프를 갖은 암모니아 공장의 생산을 증가시키기 위한, 하기의 단계로 이루어진 레트로피트 방법으로서;공기 분리 장치를 설치하여 산소-농축 및 질소-농축 스트림을 생산하고; 산소-농축 스트림을 압축된 공기에 주입하여, CO2제거 장치로부터 원료 합성 가스 스트림이 설계 비보다 상대적으로 증가된 NH 비를 가지는 선재하는 용량에 비해 상대적으로 증가된 용량으로, 앞공정을 조작하고, 질소-농축 스트림을 합성 루프로 공급하며; 합성 루프를 변형하여 합성루프의 암모니아 용량을 증가시키는 단계들로 이루어진 레트로피트 방법.
  9. 제8항에 있어서, 주입 단계에서 산소-농축 공기 스트림을 생성하여 25 내지 40 부피 퍼센트 산소를 함유한 제2개질기로 공급하는 레트로피트 방법.
  10. 제9항에 있어서 산소-농축 스트림이 40 내지 100 부피 퍼센트 산소를 함유하는 레트로피트 방법.
  11. 제9항에 있어서, 산소-농축 스트림이 50 내지 80 부피 퍼센트 산소를 함유하는 레트로피트 방법.
  12. 제8항에 있어서, 질소-농축 스트림이 1 부피 피센트 이하의 산소를 포함하고, 질소-농축 스트림이 원료 합성 가스 스트림내로 주입되고, 상기 방법은 질소-농축된 원료 합성 가스 스트림을 메탄 발생 장치로 통과시켜 필수적으로 산소 및 산소-함유 화합물이 없는 조성 합성 가스 스트림을 생성하는 단계를 포함하는 레트로피트 방법.
  13. 제11항에 있어서, 질소-농축 스트림이 필수적으로 산소가 없고 질소-농축 스트림을 메탄 발생 장치로부터 하류에 있는 조성 합성 가스 스트림내로 주입하는 레트로피트 방법.
  14. 제11항에 있어서, 질소-농축 스트림에 필수적으로 산소가 없고 질소-농축 스트림을 합성 가스 공급재료로 주입하여 암모니아 전환기로 보내는 레트로피트 방법.
  15. 제8항에 있어서, 합성 루프의 변형에 흑연-함유 탄소 상에 지지된 플라티늄 족 금속으로 이루어진 고활성 촉매 기재의 암모니아 전환 용량의 설치가 포함되는 레트로피트 방법.
  16. 하기의 단계로 이루어진 암모니아 합성 방법; (a) 공기를 산소-농축 및 질소-농축 스트림으로 분리하는 단계, (b) 공기를 단계 (a)로부터의 산소-농축 스트림과 혼합하여 25-40 몰퍼센트 산소를 함유한 산소-농축된 스트림을 생성하는 단계; (c) 단계(b)로부터의 산소-농축 스트림을 자열식 개질기로부터 상류에 제1개질기 및 하류에 이동 전환기, CO2제거 장치 및 메탄 발생 장치를 포함하는 합성 가스 장치의 자열식 개질기로 주입하여 합성 스트림을 생산하는 단계; 및 (d) 단계(c)로부터의 합성 가스 스트림 및 단계(a)로부터의 질소-농축 스트림을 조성 가스로서 암모니아 합성 루프로 공급하는 단계;(e) 암모니아 합성 루프를 작동시켜 (1) 암모니아 합성 반응기 공급 재료 스트림내 질소 및 수소를 전환시켜 암모니아-농축 스트림을 생성,(2) 암모니아-농축 스트림으로부터 암모니아를 회수하여 재순환 가스 스트림을 생성,(3) 합성 루프로부터 배출 스트림을 제거, (4) 배출 스트림으로부터 수소-농축 가스를 회수하고, 및 (5) 단계(d)로부터 재순환 스트림 및 조성 가스를 수소-농축 가스와 배합하여 암모니아 합성 반응기 공급 재료 스트림을 생성하는 단계.
  17. 제1항의 방법에 의해 수득된 레트로피트된 암모니아 공장.
  18. 제8항의 방법에 의해 수득된 레트로피트된 암모니아 공장.
  19. 제12항의 방법에 의해 수득된 레트로피트된 암모니아 공장.
  20. 제15항의 방법에 의해 수득된 레트로피트된 암모니아 공장.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960045115A 1995-10-25 1996-10-10 농축공기개질및합성루프에로의질소주입에의한암모니아제법 KR100419763B1 (ko)

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AU701282B2 (en) 1999-01-21
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