CN112628840A - 一种生物质高效热电联产*** - Google Patents
一种生物质高效热电联产*** Download PDFInfo
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- 238000002309 gasification Methods 0.000 claims abstract description 64
- 239000007789 gas Substances 0.000 claims abstract description 39
- 239000002994 raw material Substances 0.000 claims abstract description 38
- 238000002485 combustion reaction Methods 0.000 claims abstract description 36
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- 239000003546 flue gas Substances 0.000 claims description 28
- 239000006004 Quartz sand Substances 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 17
- 229910052609 olivine Inorganic materials 0.000 claims description 17
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Abstract
一种生物质高效热电联产***,它涉及一种发电***,具体涉及热电联产***,它包含原料供应子***、气化子***、发电子***、供热子***和热能回收子***,所述的气化子***设置在原料供应子***流程后端,所述的发电子***设置在气化子***的流程后端,所述的供热子***设置在化子***和发电子***的流程后端,所述的热能回收子***连接供热子***和原料供应子***,它通过调节进料配比,采用高效的循环燃烧的方式,通过裂解和净化装置,为燃气轮器提供低焦油含量的洁净的燃气,提高燃气轮机的发电效率,同时对***处理过程各环境中的热量通过热交换存储至余热锅炉,利用余热锅炉产生的热量对原料进行烘干,使热量得到充分利用。
Description
技术领域
本发明涉及发电技术领域,具体涉及一种生物质高效热电联产***。
背景技术
利用生物质气化气发电,然后利用其余热进行供热,称为生物质热电联产,是利用生物质能最有有效的方式之一,其相比于生物质直接燃烧,生物质气化热电联产技术由于具有较好的灵活性、洁净性和经济性而成为一个具有优势的新技术。
目前,在实际产业化过程中遇到仍然存在以下问题,其一为***利用效率偏低,一般只有12%左右,且***不稳定,达不到 效果,其二在发电过程中效率也不高,一般为20%左右,大部分的热量从尾气 和冷却水中散失掉了,使得生物质电厂 的运行费用过高,效率低下。
发明内容
本发明的目的在于针对现有技术的缺陷和不足,提供一种生物质高效热电联产***,它具有发电效率和热能综合利用效率高的特点,它通过一定的配比混合原料,采用高效的气化炉循环燃烧,通过裂解和净化装置,为燃气轮器提供低焦油含量的洁净的燃气,提高燃气轮机的发电效率,同时对***处理过程各环境中的热量通过热交换存储至余热锅炉,提高热利用效率。
为实现上述目的,本发明采用以下技术方案是:它包含原料供应子***、气化子***、发电子***、供热子***和热能回收子***,所述的气化子***设置在原料供应子***流程后端,所述的发电子***设置在气化子***的流程后端,所述的供热子***设置在化子***和发电子***的流程后端,所述的热能回收子***连接供热子***和原料供应子***;
所述的原料供应子***为生物质原料存储装置、石英砂或橄榄石存储装置、生物质原料存储装置和石英砂或橄榄石混合的混合原料存储装置;
所述的气化子***包含气化炉、裂解炉和净化器,所述的气化炉产生的高温烟气输出口通过输送管与裂解炉连接,所述的裂解炉产生的高温烟气过输送管与净化器连接;
所述的发电子***包含增压器、燃气轮机和发电机组,所述的净化器产生的高温烟气输出口通过输送管与增压器连接,所述的增压器产生的高压烟气输出口通过输送管道与燃气轮机连接,所述的发电机组设置在燃气轮机后端;
所述的供热子***包含余热锅炉、第一热交换器和第二热交换器,所述的第一热交换器设置在裂解炉后端,所述的第一热交换器的输出端与余热锅炉连接,所述的燃气轮圈产生的高温气体输出端通过输出管道与余热锅炉连接,所述的余热锅炉热水输出端通过输送管道与第二交换器连接;
所述的热能回收子***包含回热管道和烘干装置,所述的余热锅炉产生的高温气体通过回热管道与烘干装置连接。
进一步的,所述的气化炉包含第一气化炉膛1、第二进风管道2、旋风分离器3、第二气化炉膛4、燃烧室5、回流管道6、第一进风口7和布风板8,所述的第一气化炉膛1下端设有燃烧室5,所述的燃烧室5下方设有布风板8,所述的布风板8设有第一进风口7,所述的第一进风口7的迎风断面为弧形状,所述的第一气化炉膛1左端设有第二进风管道2,所述的第二进风管道2下方设有进料口,所述的第一气化炉膛1右侧设有第二气化炉膛4,所述的第二气化炉膛4上端设有旋风分离器3,所述的第二气化炉膛4下端设有回流管道6,所述的燃烧室5和第二气化炉膛4通过回流管道6连接。
进一步的,所述的布风板8为带有贯通圆孔的四方体形,所述圆孔孔径为2~5mm。
本发明的工作原理:本发明将生物质原料和石英砂或橄榄石原料分别放置与不同的存储容器中,然后生物质原料和石英砂或橄榄石原料以一定的配比进入混合料仓混合处理,混合后的原料通过螺旋进料器通过气化炉的进料口进入炉内的燃烧室内,由于生物质原料中掺有石英砂或橄榄石等物料,使其混合料比重较大,同时石英砂或橄榄石具有一定的燃烧催化作用使得混合物料在燃烧室内充分燃烧,燃烧室底下为进风口,空气通过带弧形断面的进风口,气流得到减缓、均匀分布,然后气流通过布风板8上的圆孔进入燃烧室,由于气流的作用时混合料悬浮于燃烧室燃烧,燃烧中通过第二进风管道2进入的空气促使燃烧更加充分,燃烧所产生的高温烟气通过气化炉上端管道首先进入旋风分离器3,通过旋风分离器3的离心作用,将烟气中含有比重较大颗粒落入第二气化炉膛4,并通过回流管道6返回燃烧室5进一步燃烧,而比重小的烟气进入裂解炉,通过裂解炉高温裂解,将烟气中焦油裂解为可燃气体,降低烟气中的焦油含量,裂解炉工作过程中产生的高温气体通过第一换热器,第一热交换器用于将裂解炉产生的高温气体中的热量转移至冷水中,通过以热水的形式送至余热锅炉,而经过裂解炉焦化处理后的高温可燃烟气进入净化器,进一步将烟气中含有的杂质去除,通过净化器处理的高温可燃气体通增压器提高气压,使可燃气体进入燃气轮机时的发电效率更高,燃气轮机工作产生的高温烟气通过管道送至余热锅炉,余热锅炉将吸收的热量在通过第二换热器,将热量以热水的形式送至热用户,同时利用余热锅炉产生的高温其他通过烘干装置将生物质原料和石英砂或橄榄石原料进行烘干处理。
采用上述技术方案后,本发明有益效果为:本发明提高了生物质热电联产***的发电效率和热能综合利用效率,本发明通过进料配比可调装置,采用高效的循环燃烧的方式,通过裂解和净化装置,为燃气轮器提供低焦油含量的洁净的燃气,提高燃气轮机的发电效率,同时对***处理过程各环境中的热量通过热交换存储至余热锅炉,利用余热锅炉产生的热量对原料进行烘干,使热量得到充分利用。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1是本发明的***示意图。
图2是本发明的***管线架构图。
图3是本发明中原料供应子***的分解装置示意图。
图4是本发明中气化炉的结构示意图。
图5是本发明中布风板8的结构示意图
附图标记说明:第一气化炉膛1、第二进风管道2、旋风分离器3、第二气化炉膛4、燃烧室5、回流管道6、第一进风口7、布风板8。
具体实施方式
参看图1-图5所示,本具体实施方式采用的技术方案是:它包含原料供应子***、气化子***、发电子***、供热子***和热能回收子***,所述的气化子***设置在原料供应子***流程后端,所述的发电子***设置在气化子***的流程后端,所述的供热子***设置在化子***和发电子***的流程后端,所述的热能回收子***连接供热子***和原料供应子***;
所述的原料供应子***为生物质原料存储装置、石英砂或橄榄石存储装置、生物质原料存储装置和石英砂或橄榄石混合的混合原料存储装置,所述的混合原料存储装置以低转速转动,使生物质原料存储装置和石英砂或橄榄石充分混合。
所述的气化子***包含气化炉、裂解炉和净化器,所述的气化炉产生的高温烟气输出口通过输送管与裂解炉连接,所述的裂解炉产生的高温烟气过输送管与净化器连接,所述的气化炉为循环流化床气化炉。
所述的发电子***包含增压器、燃气轮机和发电机组,所述的净化器产生的高温烟气输出口通过输送管与增压器连接,所述的增压器产生的高压烟气输出口通过输送管道与燃气轮机连接,所述的发电机组设置在燃气轮机后端,所述的增压器用于提高气体压力;
所述的供热子***包含余热锅炉、第一热交换器和第二热交换器,所述的第一热交换器设置在裂解炉后端,所述的第一热交换器的输出端与余热锅炉连接,所述的燃气轮圈产生的高温气体输出端通过输出管道与余热锅炉连接,所述的余热锅炉热水输出端通过输送管道与第二交换器连接,所述的第一热交换器与余热锅炉之间设有热泵,所述的第二热交换器与热用户之间设有热泵;
所述的热能回收子***包含回热管道和烘干装置,所述的余热锅炉产生的高温气体通过回热管道与烘干装置连接,所述的回热管道外层设有热保护层;
所述的气化炉包含第一气化炉膛1、第二进风管道2、旋风分离器3、第二气化炉膛4、燃烧室5、回流管道6、第一进风口7和布风板8,所述的第一气化炉膛1下端设有燃烧室5,所述的燃烧室5下方设有布风板8,所述的布风板8设有第一进风口7,所述的第一进风口7的迎风断面为弧形状,所述的弧形弧度为10°,所述的第一气化炉膛1左端设有第二进风管道2,所述的第二进风管道2下方设有进料口,所述的第一气化炉膛1右侧设有第二气化炉膛4,所述的第二气化炉膛4上端设有旋风分离器3,所述的第二气化炉膛4下端设有回流管道6,所述的燃烧室5和第二气化炉膛4通过回流管道6连接。
所述的布风板8为带有贯通圆孔的四方体形,所述圆孔孔径为3mm。
本发明将烘干处理后的生物质原料和石英砂或橄榄石原料分别放置与不同的存储容器中,然后生物质原料和石英砂或橄榄石原料以4:1的配比进入混合料仓混合处理,混合后的原料通过螺旋进料器通过气化炉的进料口进入炉内的燃烧室内,由于生物质原料中掺有石英砂或橄榄石等物料,使其混合料比重较大,同时石英砂或橄榄石具有一定的燃烧催化作用使得混合物料在燃烧室内充分燃烧,燃烧室底下为进风口,空气通过带弧形断面的进风口,气流得到减缓、均匀分布,然后气流通过布风板8上的圆孔进入燃烧室,由于气流的作用时混合料悬浮于燃烧室燃烧,燃烧中通过第二进风管道2进入的空气促使燃烧更加充分,燃烧所产生的高温可燃烟气通过气化炉上端管道首先进入旋风分离器3,通过旋风分离器3的离心作用,将烟气中含有比重较大颗粒落入第二气化炉膛4,并通过回流管道6返回燃烧室5进一步燃烧,而比重小的烟气进入裂解炉,通过裂解炉高温裂解,将烟气中焦油裂解为可燃气体,降低烟气中的焦油含量,裂解炉工作过程中产生的高温气体通过第一换热器,第一热交换器用于将裂解炉产生的高温气体中的热量转移至冷水中,通过以热水的形式送至余热锅炉,而经过裂解炉焦化处理后的高温可燃烟气进入净化器,进一步将烟气中含有的杂质去除,通过净化器处理的高温可燃气体通增压器提高气压,使可燃气体进入燃气轮机时的发电效率更高,燃气轮机工作产生的高温烟气通过管道送至余热锅炉,余热锅炉将吸收的热量在通过第二换热器,将热量以热水的形式送至热用户,同时利用余热锅炉产生的高温其他通过烘干装置将生物质原料和石英砂或橄榄石原料进行烘干处理,使混合料的含水率在进入气化炉是低于20%。
以上所述,仅用以说明本发明的技术方案而非限制,本领域普通技术人员对本发明的技术方案所做的其它修改或者等同替换,只要不脱离本发明技术方案的精神和范围,均应涵盖在本发明的权利要求范围当中。
Claims (3)
1.一种生物质高效热电联产***,其特征在于:它包含原料供应子***、气化子***、发电子***、供热子***和热能回收子***,所述的气化子***设置在原料供应子***流程后端,所述的发电子***设置在气化子***的流程后端,所述的供热子***设置在化子***和发电子***的流程后端,所述的热能回收子***连接供热子***和原料供应子***;
所述的原料供应子***为生物质原料存储装置、石英砂或橄榄石存储装置、生物质原料存储装置和石英砂或橄榄石混合的混合原料存储装置;
所述的气化子***包含气化炉、裂解炉和净化器,所述的气化炉产生的高温烟气输出口通过输送管与裂解炉连接,所述的裂解炉产生的高温烟气过输送管与净化器连接;
所述的发电子***包含增压器、燃气轮机和发电机组,所述的净化器产生的高温烟气输出口通过输送管与增压器连接,所述的增压器产生的高压烟气输出口通过输送管道与燃气轮机连接,所述的发电机组设置在燃气轮机后端;
所述的供热子***包含余热锅炉、第一热交换器和第二热交换器,所述的第一热交换器设置在裂解炉后端,所述的第一热交换器的输出端与余热锅炉连接,所述的燃气轮圈产生的高温气体输出端通过输出管道与余热锅炉连接,所述的余热锅炉热水输出端通过输送管道与第二交换器连接;
所述的热能回收子***包含回热管道和烘干装置,所述的余热锅炉产生的高温气体通过回热管道与烘干装置连接。
2.根据权利要求1所述的一种生物质高效热电联产***,其特征在于:所述的气化炉包含第一气化炉膛(1)、第二进风管道(2)、旋风分离器(3)、第二气化炉膛(4)、燃烧室(5)、回流管道(6)、第一进风口(7)和布风板(8),所述的第一气化炉膛(1)下端设有燃烧室(5),所述的燃烧室(5)下方设有布风板(8),所述的布风板(8)设有第一进风口(7),所述的第一进风口(7)的迎风断面为弧形状,所述的第一气化炉膛(1)左端设有第二进风管道(2),所述的第二进风管道(2)下方设有进料口,所述的第一气化炉膛(1)右侧设有第二气化炉膛(4),所述的第二气化炉膛(4)上端设有旋风分离器(3),所述的第二气化炉膛(4)下端设有回流管道(6),所述的燃烧室(5)和第二气化炉膛(4)通过回流管道(6)连接。
3.根据权利要求2所述的一种生物质高效热电联产***,其特征在于:所述的布风板(8)为带有贯通圆孔的四方体形,所述圆孔孔径为2~5mm。
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