JP2016536389A - 選択的h2s除去のための混成溶媒配合物 - Google Patents
選択的h2s除去のための混成溶媒配合物 Download PDFInfo
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- JP2016536389A JP2016536389A JP2016523913A JP2016523913A JP2016536389A JP 2016536389 A JP2016536389 A JP 2016536389A JP 2016523913 A JP2016523913 A JP 2016523913A JP 2016523913 A JP2016523913 A JP 2016523913A JP 2016536389 A JP2016536389 A JP 2016536389A
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- amine
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- acid
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- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/24—Hydrocarbons
- B01D2256/245—Methane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/304—Hydrogen sulfide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/306—Organic sulfur compounds, e.g. mercaptans
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/308—Carbonoxysulfide COS
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
- C10L2290/541—Absorption of impurities during preparation or upgrading of a fuel
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Abstract
Description
本発明のプロセスは、任意選択で、1つ以上の他の酸性ガス不純物、例えばN2、CH4、C2H6、C3H8、H2、CO、H2O、COS、HCN、NH3、O2、及び/またはメルカプタンの存在下で、H2S及びCO2を含むガス流からH2S及びCO2を除去するのに、好ましく使用される。さらに、本発明は、H2S、CO2、ならびにSO2、CS2、HCN、COS、及び/またはメルカプタンのうちの1つ以上を含むガス流から、H2S、CO2、ならびにN2、CH4、C2H6、C3H8、H2、CO、H2O、COS、HCN、NH3、O2、及び/またはメルカプタンのうちの1つ以上除去するのに使用され得る。
水、MDEA、及びエチレングリコール(EG)から作られた溶液を、中圧試験プラントで、H2S選択性をスクリーニングする。
50重量%のアミン、25重量%の水、及び25重量%の物理溶媒を含有する溶液を、約1、2.5、及び5重量%のH2Sで負荷させ、次いで、50℃及び20psigで、ヘッドスペース分析によって調査する。
50重量%のアミン、25重量%〜50重量%の水、及び0〜25重量%の物理溶媒を含有する溶液を、様々な比率のH2S及びCO2を含有する約0.5mol/molの酸性ガス混合物で負荷させ、次いで、40℃及び20psigで、ヘッドスペース分析によって調査した。
1重量%のH3PO4(溶液A)で酸性化した、MDEA、DMAPD(3−ジメチルアミノプロパン−1,2−ジオール)、及び水(35/5/60)から作られた溶液を、5psigを用いて中圧試験プラントで、1重量%のH3PO4(溶液B)で酸性化したDMAPD、水、グリセロール(40/20/40)を含有する混合物と比較する。パーセントは、体積パーセントである、4.0パーセントのH2S、10.0パーセントのCO2、及び76.0パーセントのN2を含有する合成混合物を含むガス流を、試験規模吸収装置で処理し、H2S及びCO2を除去する。各アミン吸水性水溶液に対して、ガス流を、3つの異なる流量で処理する。実施例1〜6の組成物、処理パラメータ、及び残留H2S及びCO2レベルを、表1に列挙する。
「MDEA」は、The Dow Chemical Companyから入手可能な、98%のメチルジエタノールアミンであり、
「DMAPD」は、AK scientificから入手可能な、98%の3−ジメチルアミノ−1,2−プロパンジオールであり、
「グリセロール」は、Fisher Scientificから入手可能な、98%の1,2,3−プロパントリオールであり、
「H3PO4」は、Fisher Scientificから入手可能な、85%のo−リン酸である。
1重量%のH3PO4で酸性化した、MDEAまたはDMAPD(3−ジメチルアミノプロパン−1,2−ジオール)及び水から作られた溶液を、235psigを用いて中圧試験プラントで、1重量%のH3PO4で酸性化した、DMAPD、水、及び物理溶媒(50/25/25)を含有する混合物と比較する。パーセントは、体積パーセントである、4.2パーセントのH2S、16.0パーセントのCO2、及び79.8パーセントのN2を含有する合成混合物を含むガス流を、試験規模吸収装置で処理し、H2S及びCO2を除去する。各アミン吸水性水溶液に対して、ガス流を、3つの異なる流量で処理する。実施例1〜6の組成物、処理パラメータ、及び残留H2S及びCO2レベルを、表1に列挙する。
「MDEA」は、The Dow Chemical Companyから入手可能な、98%のメチルジエタノールアミンであり、
「DMAPD」は、AK scientificから入手可能な、98%の3−ジメチルアミノ−1,2−プロパンジオールであり、
「グリセロール」は、Fisher Scientificから入手可能な、98%の1,2,3−プロパントリオールであり、
「EG」は、The Dow Chemical Companyから入手可能な、98%のエチレングリコールであり、
「H3PO4」は、Fisher Scientificから入手可能な、85%のo−リン酸である。
Claims (10)
- 硫化水素(H2S)を含む油及びガス流を処理する方法であって、
H2Sを選択的に除去するのに有効なアミンと物理溶媒とを含む水溶液で前記ガス流を処理することを含み、前記アミン及び物理溶媒は、アミン及び物理溶媒が等質量比で前記アミンと混合されたときに、少なくとも約20の誘電率を示し、前記アミンのpKaは、少なくとも約9.0であり、前記アミンの沸点は、少なくとも200℃である、前記方法。 - 前記アミン溶液は、約9.0〜11.0のpKaを有する、請求項1に記載の前記方法。
- 前記アミンは、3−ジメチルアミノ−1,2−プロパンジオール(DMAPD)、3−ジエチルアミノプロパン−1,2−ジオール(DEAPD)、2−ヒドロキシメチル−2−ジメチルアミノプロパン−1,3−ジオール(DMTA)、2−ヒドロキシメチル−2−ジエチルアミノプロパン−1,3−ジオール(DETA)、2−ヒドロキシメチル−2−メチルアミノプロパン−1,3−ジオール(MTA)、及び2−メチル−2−ヒドロキシエチルアミノプロパノール(ETA)からなる群から選択される、請求項2に記載の前記方法。
- 前記物理溶媒は、約5重量%〜60重量%の濃度で存在し、前記誘電率は、25℃で約30〜65の範囲にわたる、請求項1に記載の前記方法。
- 前記物理溶媒は、グリセロール、エチレングリコール、スルホラン、N−メチルピロリドン、N−ホルミルモルホリン、プロピレンカーボネート、エチレンカーボネート、及びそれらの混合物の群から選択される、請求項4に記載の前記方法。
- 前記アミン溶液は、酸を追加で含む、請求項1に記載の前記方法。
- 前記酸は、リン酸、ホウ酸、硫酸、及びそれらの混合物の群から選択される、請求項6に記載の前記方法。
- 前記酸は、0.1〜25mol%の前記アミンまたはアミン混合物をプロトン化するのに有効である、請求項7に記載の前記方法。
- 前記アミン溶液は、腐食抑制剤及び消泡剤、またはそれらの混合物からなる群から選択される佐剤を追加で含む、請求項1に記載の前記方法。
- 水溶液であって、
a.3−ジメチルアミノ−1,2−プロパンジオール(DMAPD)、3−ジエチルアミノプロパン−1,2−ジオール(DEAPD)、2−ヒドロキシメチル−2−ジメチルアミノプロパン−1,3−ジオール(DMTA)、2−ヒドロキシメチル−2−ジエチルアミノプロパン−1,3−ジオール(DETA)、2−ヒドロキシメチル−2−メチルアミノプロパン−1,3−ジオール(MTA)、及び2−メチル−2−ヒドロキシエチルアミノプロパノール(ETA)、及びそれらの混合物からなる群から選択される、約15重量%〜約60重量%のアミンと、
b.グリセロール、エチレングリコール、スルホラン、N−メチルピロリドン、N−ホルミルモルホリン、プロピレンカーボネート、エチレンカーボネート、及びそれらの混合物からなる群から選択される、約5重量%〜約60重量%の物理溶媒と、を含む、前記水溶液。
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