CN209507647U - 一种基于mvr系统清洁废水的系统 - Google Patents
一种基于mvr系统清洁废水的系统 Download PDFInfo
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- CN209507647U CN209507647U CN201821758534.0U CN201821758534U CN209507647U CN 209507647 U CN209507647 U CN 209507647U CN 201821758534 U CN201821758534 U CN 201821758534U CN 209507647 U CN209507647 U CN 209507647U
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Abstract
本实用新型公开了一种基于MVR系统清洁废水的系统，包括原液罐，板式换热器，升膜蒸发器，分离器，强制循环换热器，强制循环蒸发器，结晶分离器，离心机，原液罐与板式换热器连接，板式换热器与升膜蒸发器底部连接，升膜蒸发器上端与分离器下端连接，分离器顶端与升膜蒸发器顶端连接，分离器底部与强制循环换热器一侧连接，强制循环换热器连接强制循环蒸发器，强制循环蒸发器顶端与结晶分离器下端一侧连接，结晶分离器下端另一侧与强制循环换热器上端一侧连接，结晶分离器顶端与强制循环换热器顶端连接，结晶分离器底部与离心机一侧连接，此系统蒸汽采用电加热的形式转换，无需能源废气和外购热蒸汽，其蒸发产生的蒸汽冷凝水可回用于生产，经济实用。
Description
技术领域
本实用新型属于废水处理领域，尤其涉及一种生物废水处理系统。
背景技术
MVR是机械式蒸汽再压缩技术的简称，是利用蒸发系统自身产生的二次蒸汽及其能量，经蒸汽压缩机压缩做功，提升二次蒸汽的热焓，导进冷凝器，冷凝器的冷却水循环预热物料。如此循环向蒸发系统提供热能，从而减少对外界能源的需求的一项节能技术。蒸发器其工作过程是将低温位的蒸汽经压缩机压缩，温度、压力提高，热焓增加，然后进入换热器冷凝，以充分利用蒸汽的潜热。除开车启动外，整个蒸发过程中无需蒸汽。从蒸发器出来的二次蒸汽，经压缩机压缩，压力、温度升高，热焓增加，然后送到蒸发器的加热室当作加热蒸汽使用，使料液维持沸腾状态，而加热蒸汽本身则冷凝成水。项目蒸发水蒸气部分冷凝水用作地面冲洗、药剂配置、压缩机冷却等。这样，原来要废弃的蒸汽就得到了充分的利用，回收了潜热，又提高了热效率，生蒸汽的经济性相当于多效蒸发的30效。
在申请号为：CN201610357093.2，申请日为:20160526名称为：基于汽提和MVR组合工艺的处理化工废水的系统及方法的专利中，公开了一种基于汽提和MVR组合工艺的处理化工废水的系统及方法，系统包括汽提单元和MVR单元，汽提单元包括汽提塔和冷凝器，MVR单元包括MVR预热器、MVR蒸发器、MVR压缩机以及MVR热交换器，汽提塔分别与冷凝器和MVR预热器连通，MVR预热器与MVR蒸发器连通，MVR蒸发器与MVR压缩机连通，MVR压缩机与MVR热交换器连通，MVR热交换器分别与MVR预热器和MVR蒸发器连通，MVR蒸发器通过循环泵与MVR热交换器连通。本发明可将绝大部分的挥发性有机物和非挥发性有机物和无机物从化工废水中分离出来，经过处理后，任何高盐分，高COD，高挥发性和高毒性的有机废水得到有效的处理。
发明内容
本实用新型的目的就是为了克服上述现有技术存在的缺陷而提供一种基于MVR系统清洁废水的系统。
本实用新型所解决的技术问题在于提供一种基于MVR系统清洁废水的系统。
本实用新型的的目的可以通过以下技术方案来实现：
一种基于MVR系统清洁废水的系统，包括原液罐1，板式换热器2，升膜蒸发器3，分离器4，强制循环换热器5，强制循环蒸发器6，结晶分离器7，离心机8，所述原液罐1、板式换热器2、升膜蒸发器3、分离器4、强制循环换热器5、强制循环蒸发器6、结晶分离器7、离心机8之间通过水管连接，所述原液罐1与板式换热器2连接，所述板式换热器2与升膜蒸发器3底部连接，所述升膜蒸发器3上端与分离器4下端连接，分离器4顶端与升膜蒸发器3顶端连接，分离器4底部与强制循环换热器5一侧连接，强制循环换热器5连接强制循环蒸发器6，强制循环蒸发器6顶端与结晶分离器7下端一侧连接，结晶分离器7下端另一侧与强制循环换热器5上端一侧连接，结晶分离器7顶端与强制循环换热器5顶端连接，结晶分离器7底部与离心机8一侧连接，离心机8另一侧与强制循环换热器5连接。
优选的，所述分离器4顶端通过压缩机10与升膜蒸发器3顶端连接。
优选的，所述结晶分离器7顶端通过压缩机与强制循环换热器5顶端连接。
优选的，所述原液罐1和板式换热器2之间设置进料泵9。
优选的，所述离心机8与强制循环换热器5之间设有循环泵。
优选的，所述结晶分离器7下端另一侧与强制循环换热器5上端一侧之间设有循环泵。
优选的，所述强制循环蒸发器6顶端与结晶分离器7下端一侧之间设有进料泵。
本实用新型的有益效果：
此系统以电能转化机械能再转化热能的方式加热，蒸汽采用电加热的形式转换，无需能源废气，亦无需外购热蒸汽，其蒸发产生的蒸汽冷凝水可回用于生产，经济实用。
附图说明
图1为一种基于MVR系统清洁废水的系统的结构示意图。
图中：1-原液罐；2-板式换热器；3-升膜蒸发器；4-分离器；5-强制循环换热器；6-强制循环蒸发器；7-结晶分离器；8-离心机；9-进料泵；10-压缩机。
具体实施方式
结合附图所示，本实用新型的技术方案作进一步的描述：
一种基于MVR系统清洁废水的系统，包括原液罐1，板式换热器2，升膜蒸发器3，分离器4，强制循环换热器5，强制循环蒸发器6，结晶分离器7，离心机8，所述原液罐1、板式换热器2、升膜蒸发器3、分离器4、强制循环换热器5、强制循环蒸发器6、结晶分离器7、离心机8之间通过水管连接，所述原液罐1与板式换热器2连接，所述板式换热器2与升膜蒸发器3底部连接，所述升膜蒸发器3上端与分离器4下端连接，分离器4顶端与升膜蒸发器3顶端连接，分离器4底部与强制循环换热器5一侧连接，强制循环换热器5连接强制循环蒸发器6，强制循环蒸发器6顶端与结晶分离器7下端一侧连接，结晶分离器7下端另一侧与强制循环换热器5上端一侧连接，结晶分离器7顶端与强制循环换热器5顶端连接，结晶分离器7底部与离心机8一侧连接，离心机8另一侧与强制循环换热器5连接。
本实施例中，优选的，所述分离器4顶端通过压缩机10与升膜蒸发器3顶端连接。
本实施例中，优选的，所述结晶分离器7顶端通过压缩机与强制循环换热器5顶端连接。
本实施例中，优选的，所述原液罐1和板式换热器2之间设置进料泵9。
本实施例中，优选的，所述离心机8与强制循环换热器5之间设有循环泵。
本实施例中，优选的，所述结晶分离器7下端另一侧与强制循环换热器5上端一侧之间设有循环泵。
本实施例中，优选的，所述强制循环蒸发器6顶端与结晶分离器7下端一侧之间设有进料泵。
此系统处理废水过程：
1.进料：待处理溶液储存在原液罐中，25℃的废水从原液罐出来，由进料泵打入板式换热器，在板式换热器内进料液与蒸汽冷凝水、鲜蒸汽进行热交换，升温至蒸发温度，进入升膜蒸发器，进行蒸发浓缩。
2.物料通过升膜蒸发器，在升膜蒸发器列管内，物料从下而上，受热蒸发，气液混合物在分离器内进行气液分离。分离后的二次蒸汽通过压缩机机返回到升膜蒸发器内，分离后的浓缩液进入强制循环换热器。
3.物料在进入强制循环换热器升温升压，继而进入强制循环蒸发器，而后在结晶分离器内进行闪蒸，此时会有小颗粒的结晶析出。析出的结晶在结晶分离器内下落的过程中，晶型不断变大，最终从结晶分离器底部排料至离心机分离。
4.气液分离后的浓缩液被强制循环泵打入强制循环换热器，浓缩液在强制循环蒸发器内继续进行升温，后进入分离器，在分离器内进行闪蒸，之后结晶析出，如此循环。
5.离心后的结晶打包，在离心过程中降温了的母液经加热后达到蒸发温度返回系统继续进行蒸发浓缩。
6.从分离器出来的90℃二次蒸汽，进入MVR压缩系统。二次蒸汽被压缩后，温度可升高到106℃左右，压缩后的蒸汽再打入升膜和强制循环换热器加热物料。加热物料的过程中，这部分温度约为106℃的蒸汽冷凝成水流至凝水灌并由蒸馏水泵泵入板式换热器与原料液换热，温度降至30℃左右排出系统。
7.经预热后的物料进入蒸发器后，和压缩后升高到106℃的蒸汽进行换热蒸发，整个系统达到热平衡。
由于MVR系统以电能转化机械能再转化热能的方式加热，首次蒸汽采用电加热的形式转换，无需能源废气，亦无需外购热蒸汽。废乳化液废水中含有矿物油类，废水在进入MVR系统前，经过了生化系统预处理，大部分有机物被降解，剩余少量高分子难降解有机物，在蒸发过程中挥发性不强，最终进入蒸发残渣；表面处理废液产生的废水显碱性，废水中氯离子、硫酸根、硝酸根等均转化盐类，在蒸发过程中不发生分解，没有酸性气体产生。
MVR系统蒸发产生的蒸汽冷凝水可以达到《城市污水再生利用工业用水水质》(GB/T 19923-2005)中“洗涤用水和敞开式循环冷却水系统补充水”标准，可回用于生产，主要用作地面及车辆清洗用水、冷却塔补水、喷淋塔补水。
最后应说明的是：以上实施例仅用以说明而非限制本实用新型的技术方案，尽管参照上述实施例对本实用新型进行了详细说明，本领域的普通技术人员应当理解：依然可以对本实用新型进行修改或者等同替换，而不脱离本实用新型的精神和范围，而所附权利要求意在涵盖落入本实用新型精神和范围中的这些修改或者等同替换。
Claims (7)
1.一种基于MVR系统清洁废水的系统，其特征在于:包括原液罐(1)，板式换热器(2)，升膜蒸发器(3)，分离器(4)，强制循环换热器(5)，强制循环蒸发器(6)，结晶分离器(7)，离心机(8)，所述原液罐(1)、板式换热器(2)、升膜蒸发器(3)、分离器(4)、强制循环换热器(5)、强制循环蒸发器(6)、结晶分离器(7)、离心机(8)之间通过水管连接，所述原液罐(1)与板式换热器(2)连接，所述板式换热器(2)与升膜蒸发器(3)底部连接，所述升膜蒸发器(3)上端与分离器(4)下端连接，分离器(4)顶端与升膜蒸发器(3)顶端连接，分离器(4)底部与强制循环换热器(5)一侧连接，强制循环换热器(5)连接强制循环蒸发器(6)，强制循环蒸发器(6)顶端与结晶分离器(7)下端一侧连接，结晶分离器(7)下端另一侧与强制循环换热器(5)上端一侧连接，结晶分离器(7)顶端与强制循环换热器(5)顶端连接，结晶分离器(7)底部与离心机(8)一侧连接，离心机(8)另一侧与强制循环换热器(5)连接。
2.如权利要求1所述的一种基于MVR系统清洁废水的系统，其特征在于：所述分离器(4)顶端通过压缩机(10)与升膜蒸发器(3)顶端连接。
3.如权利要求1所述的一种基于MVR系统清洁废水的系统，其特征在于：所述结晶分离器(7)顶端通过压缩机与强制循环换热器(5)顶端连接。
4.如权利要求1所述的一种基于MVR系统清洁废水的系统，其特征在于：所述原液罐(1)和板式换热器(2)之间设置进料泵(9)。
5.如权利要求1所述的一种基于MVR系统清洁废水的系统，其特征在于：所述离心机(8)与强制循环换热器(5)之间设有循环泵。
6.如权利要求1所述的一种基于MVR系统清洁废水的系统，其特征在于：所述结晶分离器(7)下端另一侧与强制循环换热器(5)上端一侧之间设有循环泵。
7.如权利要求1所述的一种基于MVR系统清洁废水的系统，其特征在于：所述强制循环蒸发器(6)顶端与结晶分离器(7)下端一侧之间设有进料泵。
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