CN107701309A - 一种煤化工驰放气燃气发电的系统及方法 - Google Patents
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Abstract
本发明公开了一种煤化工驰放气燃气发电的系统及方法，该系统，是由驰放气处理装置、燃气发电装置、余热锅炉装置组成，所述的驰放气处理装置通过阀站与燃气发电装置连接，燃气发电装置通过三通挡板与余热锅炉连接。该系统通过几大装置的有机结合，以化工驰放气为气源实现燃气发电，同时利用燃机排烟余热通过余热锅炉副产蒸汽并入生产系统，在低氮排放方面，采用烟气处理方式，降低NOx排量，实现系统节能减排的效果。
Description
技术领域
本发明属于煤化工技术领域，具体涉及一种煤化工驰放气燃气发电的系统及方法。
背景技术
在煤化工企业生产最终产品过程中，会产生一部分驰放气，其主要成分为H2、CO、CH4，占驰放气的80%左右，驰放气不进行合成反应，常因在化工设备或管道中积聚而产生，由于驰放气影响设备的传热效果、影响反应速度和进度、降低生产效率等，所以驰放气必须定期排放。弛放气中含有有害、有用的组分，一般浓度都较低，品味低，附加值低。若直接将驰放气排放至大气，会对环境造成污染，然而驰放气并不一定是完全没用的，该部分气体如不加以回收利用，则直接通过火炬燃烧排放或者通过过热炉回收利用，使得这部分驰放气没有得到充分利用，不能降低生产成本，也达不到实现节能减排的效果。
发明内容
本发明目的之一是提供一种利用煤化工驰放气燃气发电的系统，该系统能充分利用煤化工驰放气，实现系统节能减排，成为循环经济运行的模式。
本发明目的之二是用上述系统实现煤化工驰放气燃气发电的方法，使煤化工弛放气得到再利用，是提高装置经济、环保效益的有效途径。
为了实现上述目的，本发明所采用的技术方案是：一种利用煤化工驰放气燃气发电的系统，是由驰放气处理装置、燃气发电装置、余热锅炉装置组成，所述的驰放气处理装置由驰放气储罐通过管道与过滤器相联通；所述燃气发电装置由氮气储罐、柴油储罐、阀站、压气机、燃气轮机和发电机组成；所述的燃气轮机通过阀站连接过滤器；所述的余热锅炉装置包含三通挡板、直排烟囱和脱硝催化剂，脱硝催化剂固定在余热锅炉中。
进一步，所述驰放气处理装置通过阀站与燃气发电装置连接，燃气发电装置通过三通挡板与余热锅炉连接。
本发明用上述系统实现一种煤化工驰放气燃气发电的方法，是将驰放气由外界送入驰放气储罐，经过滤器进入阀站，同时将氮气储罐中的氮气进入阀站，柴油储罐中的柴油进入燃气轮机，压气机中的介质直接进入燃气轮机后燃烧做功，带动发电机发电，烟气通过烟道引入三通挡板后再进入余热锅炉，烟气进入余热锅炉后再进入催化剂脱硝，经脱硝后合格烟气通过直排烟囱排放。
进一步，在驰放气进入之前热负荷要达到13MW，压力控制在2.00-2.50MPa。
更进一步，脱硝采用烟气后处理方式，且脱硝排烟温度至少为280℃，氨气压力至少为0.15MPa，避免了燃气轮机喷入蒸汽降低氮氧化物造成热效率低、能耗高的缺点。
本发明的有益效果是：通过几大系统装置的有机结合，以化工驰放气为气源实现燃气发电，同时利用燃机排烟余热通过余热锅炉副产蒸汽并入生产系统，在低氮排放方面，采用烟气处理方式，即通过SCR法降低NOx排量，实现系统节能减排的效果。
附图说明
图1是本发明的工艺系统流程图。
图中:1.氮气储罐 2.驰放气储罐 3.过滤器 4.柴油储罐 5.三通档板 6.直排烟囱 7.余热锅炉 8.催化剂 9.压气机 10.燃气轮机 11.发电机 12.阀站。
具体实施方式
下面结合附图对本发明实施例作详细说明。
由图1可知，一种化工驰放气燃气发电的系统，由驰放气处理装置、燃气发电装置、余热锅炉装置组成，所述的驰放气处理装置由驰放气储罐2通过管道与过滤器3联通；所述的燃气发电装置由氮气储罐1、柴油储罐4、阀站12、压气机9、燃气轮机10和发电机11组成，所述燃气轮机10通过阀站12连接过滤器3；所述的余热锅炉装置包含三通挡板5、直排烟囱6和脱硝催化剂8，脱硝催化剂8固定在余热锅炉7中,所述的驰放气处理装置通过阀站12与燃气发电装置连接，燃气发电装置通过三通挡板5与余热锅炉连接。
本发明用上述系统实现一种煤化工驰放气燃气发电的方法，是将驰放气由外界送入驰放气储罐2，经过滤器3进入阀站12，同时将氮气储罐1中的氮气进入阀站12，柴油储罐4中的柴油进入燃气轮机10，压气机9中的介质直接进入燃气轮机10后燃烧做功，带动发电机11发电，烟气通过烟道引入三通挡板5后再进入余热锅炉7，烟气进入余热锅炉7后再进入催化剂8脱硝，催化剂8放置在余热锅炉7内部焊接的托架上，经脱硝后合格烟气通过直排烟囱6排放。
进一步，在驰放气进入之前热负荷要达到13MW，压力控制在2.00-2.50MPa。
进一步，脱硝采用烟气后处理方式，且脱硝排烟温度至少为280℃，氨气压力至少为为0.15MPa，避免了燃气轮机喷入蒸汽降低氮氧化物造成热效率低、能耗高的缺点。
Claims (4)
1.一种煤化工驰放气发电的系统，其特征在于：由驰放气处理装置、燃气发电装置、余热锅炉装置组成，所述的驰放气处理装置由驰放气储罐(2)通过管道与过滤器(3)相联通；所述的燃气发电装置由氮气储罐(1)、柴油储罐(4)、阀站(12)、压气机(9)、燃气轮机(10)和发电机(11)组成，所述的燃气轮机(10)通过阀站(12)连接过滤器(3)；所述的余热锅炉装置包含三通挡板(5)、直排烟囱(6)和脱硝催化剂(8)，脱硝催化剂(8)固定在余热锅炉(7)中；所述的驰放气处理装置通过阀站(12)与燃气发电装置连接，燃气发电装置通过三通挡板(5)与余热锅炉(7)连接。
2.一种用权利要求1所述的煤化工驰放气发电的方法，其特征在于：驰放气由外界送入驰放气储罐(2)，经过滤器(3)进入阀站(12)，同时将氮气储罐(1)中的氮气进入阀站(12)，柴油储罐(4)中的柴油进入燃气轮机(10)，压气机(9)中的介质直接进入燃气轮机(10)后燃烧做功，带动发电机(11)发电，烟气通过烟道引入三通挡板(5)后再进入余热锅炉(7)，烟气进入余热锅炉(7)后再进入催化剂(8)脱硝，经脱硝后合格烟气通过直排烟囱(6)排放。
3.根据权利要求2所述的煤化工驰放气燃气发电的方法，其特征在于：在驰放气进入之前热负荷要达到13MW，压力控制在2.00-2.50MPa。
4.根据权利要求2所述的煤化工驰放气燃气发电的方法，其特征在于：脱硝采用烟气后处理方式，且脱硝排烟温度至少为280℃，氨气压力至少为0.15MPa。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225849A (zh) * | 1998-01-29 | 1999-08-18 | 三菱重工业株式会社 | 气化发电工艺方法及设备 |
| US6748734B1 (en) * | 2001-08-15 | 2004-06-15 | Barron Industries, Inc | Gas turbine by-pass system |
| CN1701162A (zh) * | 2002-09-17 | 2005-11-23 | 福斯特能源公司 | 利用再循环工作流体的先进混杂式煤气化循环 |
| CN201925027U (zh) * | 2010-12-01 | 2011-08-10 | 株洲南方燃气轮机成套制造安装有限公司 | 一种应用化工驰放气发电的系统 |
| US8557173B2 (en) * | 2007-12-06 | 2013-10-15 | Air Products And Chemicals, Inc. | Blast furnace iron production with integrated power generation |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225849A (zh) * | 1998-01-29 | 1999-08-18 | 三菱重工业株式会社 | 气化发电工艺方法及设备 |
| US6748734B1 (en) * | 2001-08-15 | 2004-06-15 | Barron Industries, Inc | Gas turbine by-pass system |
| CN1701162A (zh) * | 2002-09-17 | 2005-11-23 | 福斯特能源公司 | 利用再循环工作流体的先进混杂式煤气化循环 |
| US8557173B2 (en) * | 2007-12-06 | 2013-10-15 | Air Products And Chemicals, Inc. | Blast furnace iron production with integrated power generation |
| CN201925027U (zh) * | 2010-12-01 | 2011-08-10 | 株洲南方燃气轮机成套制造安装有限公司 | 一种应用化工驰放气发电的系统 |
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