1 H2S and Its Effect on Devices and Environment

1．1 H2S Emission Sources

1．2 H2S Chemical Properties

1．3 Acid Gas Removal Methods

1．4 IGCC Environmental Performance

References

2 Status of Coal Gas H2S Removal

2．1 Clean Coal Technology

2．1．1 Pre-combustion Clean Technologies

2．1．2 Combustion Adjusting and Optimization

2．1．3 Flue Gas Emission Controls

2．2 H2S Removal for Integrated Gasification Combined Cycle

2．2．1 Introduction of Integrated Gasification Combined Cycle

2．2．2 Integrated Gasification Combined Cycle Desulfurization

2．3 Low-Temperature Coal Gas Desulfurizers

2．4 High-Temperature Coal Gas Desulfurizers

2．4．1 Unsupported Desulfurizers

2．4．2 Supported Desulfurizers

2．4．3 Kinetic Studies for High-Temperature Desulfurization．．

References

3 Rare-Earth Oxide Desulfurizers

3．1 Desulfurizer Synthesis and Desulfurization System

3．1．1 Synthesis and Characterization of Rare-Earth Oxide Desulfurizers

3．1．2 Fixed-bed Reactor Desulfurization System

3．1．3 Activity Evaluation of Rare-Earth Oxide Desulfurizers．．

3．2 Cerium-Based High-Temperature Desulfurizers

3．2．1 Textural Properties of Cerium-Based Desulfurizers

3．2．2 Crystalline Structures of Cerium-Based Desulfurizers．．．

3．2．3 Surface Elemental Analysis of Cerium-Based Desulfurizers

3．2．4 Activity of Cerium-Based Desulfurizers

3．3 Lanthanum-Based High-Temperature Desulfurizers

3．3．1 Textural Properties of Lanthanum-Based Desulfurizers

3．3．2 Crystalline Structure of Lanthanum-Based Desulfurizers

3．3．3 Surface Elemental Analysis of Lanthanum-Based Desulfurizers

3．3．4 Activity of Lanthanum-Based Desulfurizers

3．4 Sulfidation Mechanism of Rare-Earth Oxide Desulfurizers

3．5 Summary

References

4 Nano Elemental Metal Desulfurizers

4．1 Sorbent Synthesis and Activity Tests

4．1．1 Carbon Aerogel Synthesis

4．1．2 Synthesis of Nano Elemental Metal Desulfurizers

4．1．3 Activity Tests for Nano Elemental Metal Desulfurizers

4．2 Nano Fe High-Temperature Desulfurizers

4．2．1 Textural Properties of Nano Fe Desulfurizers

4．2．2 Crystalline Structures of Nano Fe Desulfurizers

4．2．3 Surface Elemental Analysis of Nano Fe Desulfurizers．．

4．2．4 Activity of Nano Fe Desulfurizers

4．3 Nano Cu High-Temperature Desulfurizers

4．3．1 Textural Properties of Nano Cu Desulfurizers

4．3．2 Crystalline Structures of Nano Cu Desulfurizers

4．3．3 Surface Elemental Analysis of Nano Cu Desulfurizers

4．3．4 Activity of Nano Cu Desulfurizers

4．4 Sulfidation Mechanism of Nano Elemental Metal Desulfurizers

4．5 Summary

References

5 Desulfurization Kinetics and Thermodynamics

5．1 Desulfurizer TPR Kinetics

5．1．1 H2-TPR Experiments

5．1．2 Kinetic Equations of Desulfurizer Reduction

5．1．3 H2-TPR Profile and Kinetic Parameter Analysis

5．2 Desulfurizer Deactivation Kinetics

5．3 Desulphurization Thermodynamics

5．3．1 Thermodynamic Equations of Desulfurization

5．3．2 Thermodynamic Properties of Desulfurizers

5．4 Influence of Gas Composition on Desulfurization Performance

5．4．1 Effect of CO on Rare Earth Oxide Desulfurization Performance

5．4．2 Effect of H2 on Rare Earth Oxide Desulfurization Performance

5．4．3 Effect of CO and H2 on Nano Metal Desulfurization Performance

5．4．4 Effect of CO and H2 on Sulfidation Products

5．5 Summary

References

Index

《IGCC粗煤氣高溫脫硫（英文版）》系“能源與環境出版工程”(第二期)之一，較為全面地介紹了整體煤氣化聯合循環發電(1GCC)的高溫脫硫技術。書中系統介紹了單一金屬氧化物脫硫劑、復合金屬氧化物脫硫劑、稀土氧化物脫硫劑和納米金屬單質脫硫劑的制備方法；對不同氣氛下各脫硫劑的反應機理、脫硫反應動力學、再生后脫硫劑的脫硫活性和使用循環次數進行了相應的實驗研究；此外，該書提供了碳氣凝膠(作為脫硫劑的載體)具體的制備方法和改性措施，介紹了其在吸附、催化等領域的應用前景。通過閱讀該書，讀者可以全面了解lGCC潔凈發電技術中的關鍵環節和未來有可能實現的新型技術應用。

熱粗煤氣是不脫焦油的煤氣，由于煤氣中含有焦油，極易堵塞管道，在工業界很少應用。煤氣是以煤為原料加工制得的含有可燃組分的氣體。根據加工方法、煤氣性質和用途分為:煤氣化得到的是水煤氣、半水煤氣、空氣煤氣(或稱發生爐煤氣)，這些煤氣的發熱值較低，故又統稱為低熱值煤氣;煤干餾法中焦化得到的氣體稱為焦爐煤氣，高爐煤氣。

煤氣是由含碳物質不完全燃燒時發生的氣體，主要成分是一氧化碳，無色無臭，有毒，被人和動物吸入后與血液中的血紅蛋白結合(比氧與血紅蛋白的結合能力強，造成一定程度的缺氧)能引起中毒。也叫煤毒。發生爐煤氣分為單段發生爐煤氣和雙段發生爐煤氣，兩種煤氣的成分含量有所不同2100433B

主條目：整體煤氣化聯合循環

進入低溫甲醇洗粗的煤氣中CO含量過高，易造成CO分壓高，吸收塔壓差升高，影響甲醇對CO₂的吸收效果;粗煤氣中的NH₃含量高，進入甲醇洗系統后，易造成煤氣低溫冷卻器碳酸氫銨結晶堵塞，影響生產正常運行;粗煤氣中煤粉等雜質進入甲醇洗系統，易造成固體物質在溶液換熱器列管內聚集，影響換熱器的換熱效果或在吸收塔塔盤上聚集，使塔壓差升高，影響吸收效果。

為保證吸收塔的正常運行，可采取以下防范措施，防止過多的雜質進入系統:

(1)變換系統盡量控制出口氣體中CO含量在工藝指標范圍內，一般情況下不宜采取提高CO含量來增加液氮洗冷量;

(2)變換系統嚴格控制好煤氣洗滌效果，洗滌后的煤氣溫度不超過40℃ ，以防氣體中的氨洗滌不干凈，將氨帶入甲醇洗系統;

(3)絕對禁止開變換爐副線來調整粗煤氣中CO含量，特殊情況下要適當提高CO含量，也只能通過變換工段調整工藝來實現，以防將固體雜質帶到甲醇洗系統。