CN105419881A - 一种基于秸秆气的热电联供的方法 - Google Patents

一种基于秸秆气的热电联供的方法 Download PDF

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CN105419881A
CN105419881A CN201510808281.8A CN201510808281A CN105419881A CN 105419881 A CN105419881 A CN 105419881A CN 201510808281 A CN201510808281 A CN 201510808281A CN 105419881 A CN105419881 A CN 105419881A
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straw
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王立庆
王宝
李巍
王丹阳
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SOBC ENERGY SOURCES SCIENCE AND TECHNOLOGY CO LTD
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Abstract

一种基于秸秆气的热电联供的方法，该方法包括基于秸秆气的分布式能源系统，该系统由依次相连的秸秆气化炉、布袋除尘器、旋风除尘器、热管式换热器、电捕焦油器、喷淋塔、旋液分离器、风机、储气柜、燃气内燃机、余热锅炉和汽轮机组组成。

Description

一种基于秸秆气的热电联供的方法
技术领域
本发明涉及一种基于秸秆气的热电联供的方法。
背景技术
生物质能发电是以农业、林业、工业废弃物，甚至城市垃圾为原料，并对其进行燃烧或气化发电的方式，它是可再生能源以及新能源的一种，是太阳能的一种表现形式，直接或间接来源于光合作用，因此生物质能发电具有储量高、分布广与低污染的优势。
近年，随着我国经济不断发展、城镇化进程加速及能源供给紧张，生物质综合利用有望成为重要发展方向。在国内城镇化进程加快与国外生物质利用发展如火如荼的背景下，预计我国生物质事业也要走规模化、产业化道路，生物质能发电产业前景可期。
在我国东北及新疆等北方大部分地区，耕地面积大，秸秆资源丰富，为生物质分布式能源系统的推广和发展提供了夯实的基础条件，但这些地区能源站建设位置相对较偏远，另外由于北方地区夏季气候不是特别炎热，且高温期较短，对供冷需求不是很大，所以在该地区建设冷热电联供系统不是很合适，现提出一种生物质资源综合利用系统，既适合该地区的用能需求又可以提高整体能源利用率。
公开号为CN202379956U的中国专利文件，公开了一种生物质冷热电联供系统，公布号CN104119961A中国发明专利文件，公布了一种小型生物质气化冷热电联供方法及系统；这两个系统都是实现了冷热电联供，在一定程度上实现了能源梯级利用，但是这种系统对于追求更高发电效率且用冷需求不高的地区不太适用。另外公布号CN104119961A发明专利文件中，虽然对生物质粗气的热量进行了回收，但是所用湿法除焦方式仍存在弊端，喷淋塔内水洗过程中会有部分热量被带走，而且焦油洗涤产生的废水包含大量污染物不能随意排放，后续处理过程繁琐。
发明内容
针对现有技术的弊端，提出一种适用于没有用冷需求地区的秸秆气化热电联供系统，而且可以提高综合能源效率，实现能源梯级利用，高效电捕焦除焦方法用于秸秆气净化系统，为了实现上述目的，本装置采用如下技术方案：
一种基于秸秆气的热电联供的方法，该方法包括基于秸秆气的分布式能源系统，该系统由依次相连的秸秆气化炉、布袋除尘器、旋风除尘器、热管式换热器、电捕焦油器、喷淋塔、旋液分离器、风机、储气柜、燃气内燃机、余热锅炉和汽轮机组组成，秸秆原料进入气化炉内进行热解气化，产生的秸秆粗气依次进入布袋除尘器和旋风除尘器内除去大量粉尘，除尘后燃气进入热管式换热器内通过气液换热后燃气温度降低到90-110℃，热管式换热器热水侧通过换热产生用于采暖的热水，90-110℃的燃气进入电捕焦油器进行除焦处理，经过除焦处理后的燃气进入喷淋塔内进行洗涤降温处理，然后气体进入旋液分离器内去除多余水分，处理之后进入储气柜内稳压存储，经过处理后的燃气达到燃气内燃机进气标准，燃气在燃气内燃机内做功发电同时产生大量550-600℃的高温烟气，余热锅炉利用高温烟气产生可以用于发电的过热蒸汽，产生的过热蒸汽进入汽轮机组内推动汽轮机做功发电，做功后的饱和蒸汽用于冬季采暖使用。
进一步，秸秆气化炉产生的温度为550-650℃的秸秆粗气除尘后燃气进入过热管式换热器产生90-100℃的高温热水供冬季采暖使用。
进一步，所述热管式换热器粗气出口处设置温度传感器，以进入电捕焦油器内的气体温度为依据，通过温度控制换热器热水侧热水循环泵转速来调节循环水量，达到控制秸秆气温度在90-110℃范围内。
进一步，所述电捕焦油器将焦油、粉尘粒子清除，达到净化燃气的目的，进入电捕焦油器的秸秆气温度严格控制在90-110℃。
本发明有益效果：
第一，提高了能源的利用率，提高了整体发电效率，实现了高效利用能源的目的。
第二，加入了电捕焦油系统，可以有效提高除焦效率，净化后焦油含量≤20mg。
第三，极大的减少了焦油污水的排放，降低污水处理费用，减少环境污染。
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的前提下，还可以根据这些附图获得其他的附图。
附图1为基于秸秆气的分布式能源系统示意图。
具体实施方式
下面结合附图和实施例对本发明进行进一步说明。
如图1所示，一种基于秸秆气的热电联供的方法，该方法包括基于秸秆气的分布式能源系统，该系统由依次相连的秸秆气化炉1、布袋除尘器2、旋风除尘器3、热管式换热器4、电捕焦油器5、喷淋塔6、旋液分离器7、风机8、储气柜9、燃气内燃机10、余热锅炉11和汽轮机组12组成。
秸秆原料进入气化炉内1进行热解气化，产生的秸秆粗气依次进入布袋除尘器2和旋风除尘器3内除去大量粉尘，除尘后燃气进入热管式换热器4内通过气液换热后燃气温度降低到90-110℃，热管式换热器4热水侧通过换热产生用于采暖的热水，90-110℃的燃气进入电捕焦油器5进行除焦处理，由于电捕焦油器对进入气体温度严格要求90-110℃，通过在热管式换热器4粗气出口处设置温度传感器，以进入电捕焦油器5内的气体温度为依据，通过温度控制换热器热水侧热水循环泵转速来调节循环水量，达到控制生物质气温度在90-110℃范围内。经过除焦处理后的燃气进入喷淋塔6内进行洗涤降温处理，达到燃气内燃机进气温度、洁净度要求，然后气体进入旋液分离器7内去除多余水分，处理之后进入储气柜9内稳压存储，经过处理后的燃气达到燃气内燃机10进气标准，燃气在燃气内燃机内做功发电同时产生大量550-600℃的高温烟气，为了有效利用该部分高温烟气，该系统设置蒸汽余热锅炉11，余热锅炉利用高温烟气产生可以用于发电的过热蒸汽，产生的过热蒸汽进入汽轮机组12内推动汽轮机做功发电，做功后的饱和蒸汽用于冬季采暖使用。
可以理解的是，以上关于本发明的具体描述，仅用于说明本发明而并非受限于本发明实施例所描述的技术方案，本领域的普通技术人员应当理解，仍然可以对本发明进行修改或等同替换，以达到相同的技术效果；只要满足使用需要，都在本发明的保护范围之内。

Claims (4)

1.一种基于秸秆气的热电联供的方法，该方法包括基于秸秆气的分布式能源系统，该系统由依次相连的秸秆气化炉、布袋除尘器、旋风除尘器、热管式换热器、电捕焦油器、喷淋塔、旋液分离器、风机、储气柜、燃气内燃机、余热锅炉和汽轮机组组成，其特征在于，秸秆原料进入气化炉内进行热解气化，产生的秸秆粗气依次进入布袋除尘器和旋风除尘器内除去大量粉尘，除尘后燃气进入热管式换热器内通过气液换热后燃气温度降低到90-110℃，热管式换热器热水侧通过换热产生用于采暖的热水，90-110℃的燃气进入电捕焦油器进行除焦处理，经过除焦处理后的燃气进入喷淋塔内进行洗涤降温处理，然后气体进入旋液分离器内去除多余水分，处理之后进入储气柜内稳压存储，经过处理后的燃气达到燃气内燃机进气标准，燃气在燃气内燃机内做功发电同时产生大量550-600℃的高温烟气，余热锅炉利用高温烟气产生可以用于发电的过热蒸汽，产生的过热蒸汽进入汽轮机组内推动汽轮机做功发电，做功后的饱和蒸汽用于冬季采暖使用。
2.根据权利要求1所述基于秸秆气的热电联供的方法，其特征在于：秸秆气化炉产生的温度为550-650℃的秸秆粗气除尘后燃气进入过热管式换热器产生90-100℃的高温热水供冬季采暖使用。
3.根据权利要求1所述基于秸秆气的热电联供的方法，其特征在于：所述热管式换热器粗气出口处设置温度传感器，以进入电捕焦油器内的气体温度为依据，通过温度控制换热器热水侧热水循环泵转速来调节循环水量，达到控制秸秆气温度在90-110℃范围内。
4.根据权利要求2所述基于秸秆气的热电联供的方法，其特征在于：所述电捕焦油器将焦油、粉尘粒子清除，达到净化燃气的目的，进入电捕焦油器的秸秆气温度严格控制在90-110℃。
CN201510808281.8A 2015-11-23 2015-11-23 一种基于秸秆气的热电联供的方法 Pending CN105419881A (zh)

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