污泥焚烧发电资源综合利用工程热负荷设计方案

污泥焚烧发电资源综合利用工程热负荷设计方案1.1供热现状1.1.1工业负荷目前，XXXaa热电有限公司工业负荷不断增加，现有两台供热机组和两台中压蒸汽锅炉供热，本期工程供热机组可利用汽机抽汽来代替蒸汽锅炉，根据现有供热情况，各工业热用户最高用汽压力0.7MPa，最低0.5MPa，供热半径5公里，汽机采用0.98MPa/300℃的抽汽可以替代工业。近期生产热负荷表 表5-1序号单位名称压力MPa单位热负荷备注采暖期2880h非采暖期4120h最大平均最大平均1贵华针织0.7t/h1.570.972中绵针织0.5t/h4.591.813中绵针织（分厂）0.5t/h1.310.834针织分公司0.5t/h11.158.715针织龙湾分厂0.5t/h1.050.696针织一分厂0.7t/h1.050.697发制品厂0.5t/h4.592.078即发盛友0.5t/h0.660.009世纪公司0.5t/h0.260.1410华和针织（总厂）0.5t/h0.660.2811华和针织（分厂）0.7t/h1.310.4112华和针织（三厂）0.5t/h1.970.6913华和针织（四厂）0.5t/h2.622.0714瑞和针织0.5t/h1.050.4115即发纺织0.5t/h1.571.3816华绵针织1期0.7t/h11.7416.5917华绵针织2期0.5t/h19.6820.7418华绵针织3期0.5t/h1.311.3819华诺针织一0.5t/h1.050.2820华诺针织二0.5t/h0.000.0021华诺针织三0.7t/h0.660.1422华诺针织四0.5t/h0.260.2823华诺针织五0.5t/h1.310.6924华诺针织六0.5t/h0.260.1425华诺针织七0.5t/h0.260.2826华诺针织八0.7t/h1.310.6927伙房0.5t/h0.130.1428伙房（北）0.5t/h0.130.1429颐和针织0.5t/h0.260.1430颐和针织（东厂）0.5t/h0.130.1431颐和针织（南厂）0.7t/h0.130.1432华信印花0.5t/h0.260.2833华信印花分厂0.5t/h0.660.2834华美针织0.5t/h3.942.7735华盛袜业0.5t/h1.571.1136华诚染色0.7t/h11.7416.5937华日彩印0.5t/h1.310.6938华运发制品0.5t/h0.660.1439即发科技0.5t/h1.570.0040即发公寓0.5t/h1.970.2841即发新材料0.7t/h0.130.0042龙世包装0.5t/h0.660.0043茂宏针织0.5t/h1.972.0744江荣金属0.5t/h0.260.2845一泽水洗0.5t/h0.260.2846全聚服饰0.7t/h0.260.2847大舟花边0.5t/h0.260.2848宝岛气体0.5t/h0.660.6949永盛水洗（东厂）0.5t/h0.390.4150永盛水洗（西厂）0.5t/h1.050.6951浩源水洗0.7t/h0.660.4152新莱特包装0.5t/h0.390.4153大昌包装0.5t/h0.260.2854大昌一分厂0.5t/h0.660.6955龙湾针织（南厂）0.5t/h0.130.1456千和制衣0.7t/h0.130.1457龙鹤针织0.5t/h0.130.1458大众浴池0.5t/h0.130.1459新大发印染0.5t/h1.972.0760宏泰地毯0.5t/h1.971.6661三锦针织0.7t/h2.622.7762德泰线业0.5t/h1.050.6963泽宁包装0.5t/h0.660.4164鑫茂水洗0.5t/h0.260.2865鑫海湾洗浴0.5t/h0.130.1466洪和服饰0.7t/h1.972.0767永佳水洗0.5t/h0.660.2868瑞华制衣0.5t/h19.6816.5969沃鑫包装0.5t/h0.260.2870金鑫源0.5t/h0.260.2871富润达印染0.7t/h3.282.7772华鑫浴都0.5t/h0.130.1473钰坤水洗0.5t/h0.390.2874汗珍皮革0.5t/h0.130.1475东洋热交换器0.5t/h1.571.3876海龙宫游泳馆0.5t/h0.130.1477耀杰制衣0.7t/h2.622.0778诺瑞毛制品0.5t/h1.571.3879鼎骁服饰0.5t/h0.130.0080水韵服饰0.5t/h0.130.1481泰盛水洗0.5t/h0.390.4182金凯利0.7t/h0.260.2883高丽钢线0.5t/h6.561.5384东海家电0.5t/h0.660.4185海鹰气囊0.5t/h0.130.1486亁丰包装0.5t/h0.660.4187中天针织0.5t/h0.390.1488浩润包装0.7t/h0.660.6989欧特佳包装0.5t/h0.390.4190鑫双泓包装0.5t/h0.390.4191昌源0.5t/h1.972.0792鑫日服饰0.5t/h0.260.2893永世达0.7t/h0.260.1494玉杰水洗0.5t/h0.130.1495唐锦针织0.5t/h0.130.1496照东服装0.5t/h1.971.6697万兴建材0.5t/h1.972.0798瑞祝祥0.5t/h0.390.2899中医院药厂0.7t/h0.130.14100第五季服饰0.5t/h0.660.28101海隆机械0.5t/h2.622.07102合计176.73150.581.1.2采暖负荷XXX市民用热负荷采用热水供应，XXX市建筑民用及公共建筑供热负荷指标综合（旧式建筑和新型节能建筑结合）取40W/m2，管网热损失取5%，，折到热电公司出口指标取：42.10W/m2，则1万平方米采暖热耗为1.516GJ/h；本期项目采暖负荷均为已有热用户，供热半径大约7公里，现有两处热源：一为3#4#锅炉的蒸汽加热电厂内的汽水换热站供应采暖用户热水，二为C6机组的提供的低真空循环热水。本期居民住宅、公建等的采暖热负荷（采暖期2880h），详见下表。采暖热负荷表序号单位名称面积万平米热指标GJ/万平热负荷折蒸汽备注1点点针织1.241.441.790.602服装管委会0.741.441.070.363海立1.991.442.860.964栆杭村委0.501.440.720.245华通包装0.501.440.720.246交警大队2.481.443.581.207皓远商标0.741.441.070.368圣帝亚1.241.441.790.609佳乐佳0.251.440.360.1210云龙纺机1.241.441.790.6011天成顺针织厂0.251.440.360.1212正发商城1.241.441.790.6013XXX利群1.241.441.790.6014海通达0.501.440.720.2415XXX宾馆0.741.441.070.3616海联食品1.491.442.150.7217南洋家具0.251.440.360.1218南龙湾宿舍0.501.440.720.2419马涛0.251.440.360.1220欢龙0.251.440.360.1221电器厂3.721.441.361.8022诚誉织造0.501.440.720.2423服装市场12.421.4417.886.0024怡馨园3.721.441.361.8025锦绣园2.481.443.581.2026御墅临枫站9.931.4414.304.8027市医院12.421.4417.886.0028其他4.061.441.841.9629汇总68.6798.8832.321.1.3热负荷汇总近期热负荷汇总表类别单位压力MPa热负荷备注采暖期非采暖期最大平均最大平均工业热负荷t/h0.7176.73150.58采暖热负荷GJ/h98.880近期热负荷汇总表（折到电厂出口）类别单位压力MPa热负荷备注采暖期非采暖期最大平均最大平均工业热负荷t/h0.7176.37150.27GJ/h531.6447.8采暖热负荷GJ/h103.830t/h0.9834.80折0.98MPa蒸汽注：1、工业蒸汽热负荷，考虑焓差系数0.97，考虑网损7%，最大热负荷同时率取0.9，折算到电厂出口系数为0.998;0.98MPa蒸汽供热量按2.98GJ/t。2、采暖负荷管网热损失取5%，，折到热电公司出口指标取：42.10W/m2，则1万平方米采暖热耗为1.516GJ/h热负荷分配（折到电厂出口）类别单位压力MPa热负荷备注采暖期非采暖期最大平均最大平均工业热负荷t/h0.7176.37150.27总计GJ/h531.6447.8C6-3.43/0.98t/h0.984525现有机组B6-3.43/0.98t/h0.9870.3970.39现有机组C12-3.43/0.98t/h0.9864.958.8新建机组采暖热负荷GJ/h103.80C6-3.43/0.98GJ/h36.14现有机组C12-3.43/0.98GJ/h67.69新建机组注：1、C6-3.43/0.98和B6-3.43/0.98汽机及1#2#（75t/h）锅炉为已有机组。2、C12-3.43/0.98汽机及3#4#（65t/h）锅炉为本期改扩建机组。供热参数1.2.1供汽参数的确定本工程供热为工业热负荷，同时考虑到XXX市的工业不断发展和污泥量的不断增加，本工程拟新建1台12MW抽汽凝汽式汽轮发电机组，抽汽机主要为热用户以后的发展进行供热。5家工业热用户用汽压力均在0.6~0.7MPa左右的饱和蒸汽，所以考虑供0.98MPa(a)，温度300℃的蒸汽可满足要求。1.2.2采暖参数的确定本项目拟利用汽机低真空运行循环水供热。汽机冬季正常运行时排汽压力为0.006MPa,排汽温度约为36℃,降低凝汽器真空，即提高排汽压力到0.031MPa，排汽温度约为70℃，这样循环水供水温度可以到65℃，通过循环水将乏汽的热量供给采暖用户，从而极大地降低了冷源损失，提高全厂热效率、达到节能挖潜的目的。经计算将机组排汽温度提高到70℃，排汽部分的发电功率下降～8.0%。采暖负荷67.69GJ/h(折0.98MPa305℃蒸汽约22.7t/h)。0.031MPa70℃蒸汽焓值为2626.8kJ/kg，凝结水温度70℃单位t/h乏汽热量为：(2626.8-70×4.186)×1000=2333780kJ/h=2.334GJ/h蒸汽和水的换热效率取1，则采暖负荷67.69GJ/h需要的乏汽流量为：67.69÷(2.334*1)=29t/h12MW抽凝机采暖季节设计工况排汽流量为29t/h。低真空供热循环水温度供水温度取65℃,回水温度取50℃循环水量约量为（供水温度65℃,回水温度45℃67.69×106/((65-50)×4.186))=1078038kg/h≈1078t/h1.3设计热负荷本期C12机组厂热负荷如下表（折算到热电厂出口）设计热负荷汇总表 表5-3类别单位压力Mpa热负荷备注采暖期（2880h）非采暖期4120h最大平均最大平均工业热负荷t/h0.98164.758.7GJ/h194.76176