CN109608012A - 废轮胎热解制新能源加热空气干化污水厂污泥工艺及设备 - Google Patents

废轮胎热解制新能源加热空气干化污水厂污泥工艺及设备 Download PDF

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CN109608012A
CN109608012A CN201810058241.XA CN201810058241A CN109608012A CN 109608012 A CN109608012 A CN 109608012A CN 201810058241 A CN201810058241 A CN 201810058241A CN 109608012 A CN109608012 A CN 109608012A
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喻万钧
唐有根
付志华
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Changsha Zhongna Sublimation Machinery and Electrical Equipment Manufacturing Co.,Ltd.
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Abstract

一、用热解炉将废轮胎热解制新能源(燃油、可燃气)。二、用新能源(高热值)送进空气加热炉将常温空气加热到280‑320℃。三、将高温热风送进热风干化炉逐层干化。同时将污泥干化产生含水蒸汽有机臭气送入冷凝器、气水分离器分离后有机臭气再送入空气加热炉与燃油、可燃气高温焚烧，多余气送入余热锅炉生产蒸气。四、空气加热炉排出含有微细颗粒物尾气送入袋式除尘机。经离心引风机(I)送进净化塔I、II，进入净化塔I、II尾气与向塔内输进的净化剂中和。最后由离心引风机(II)排空。五、附产炭黑、生态水泥料、农用有机肥。

Description

废轮胎热解制新能源加热空气干化污水厂污泥工艺及设备
技术领域：
本发明涉及废轮胎热解制新能源，利用新能源作热源加热常温空气干化污水厂污泥工艺及设备。
背景技术：
废轮胎量大(当前在公路上运行的各种汽车约3亿8千万辆)每年报废的轮胎数量之多，自然降解约400年。利用废轮胎热解制新能源(燃油、可燃气)应用在加热常温空气成高温空气干化污水厂污泥，解决污水厂污泥干化节约运行成本，当前污水厂污泥脱水多用离心脱水机，板框压滤机真空过滤机等传统机具，运行成本高污泥含水率仍然较高。本新工艺属湿法冶金生产轻质碳酸钙(含水60％～80％)，得到零含水率轻质碳酸钙粉末产品。国外污泥有用流化床炉、多膛炉焚烧脱水，设备制造成本运行成本都大于本发明。且上海、杭州、厦门、重庆、青岛等城市污水处理厂均未采用，沿用板框、离心、真空过滤等传统设备脱水。
本发明应用了四种专利技术：(1)废橡胶热解制燃料油，可燃气(ZL2012 10033456.9)；(2)空气加热炉申请号：(3)热风干化炉申请号：(2017 2 1884948.3)；(4)净化塔I、II，ZL00252344.2(专利名称：烟气净化装置)。
现将此技术综合归纳整理完善后申报发明专利应用在城市污水处理厂污泥干化。可直接将污水处理厂污泥从重力浓缩池运出含水80％污泥进污泥储仓再送入热风干化炉(6)干化得到零含水污泥，直送水泥企业做生产生态水泥料或粉碎后作农用有机肥。
技术方案：
为了解决废轮胎污染环境充分利用废轮胎作新能源原料经热解工艺生产燃油、可燃气将获得的燃油、可燃气作热源将常温空气送进空气加热炉(5)加热到280℃～320℃的高温空气送入热风干化炉(6)干化污水厂污泥得到零含水污泥。该处理工艺，操作简单易控制，能有效做到废资源再生利用。(1吨预处理废轮胎热解后物质约含混合燃油59.5％，液化气7.5％，炭黑33％)。含水60％-80％污泥进热风干化炉(6)干化会产生大量含水蒸汽有机臭气，将它送入冷凝器充分冷却后进气水分离器(7)再将有机臭气送入空气加热炉(5)与燃油、可燃气同步高温焚烧。气水分离器(7)分离水集中送入净化池处理。空气加热炉(5)排出含尘尾气送入袋式除尘器(8)留下微细颗粒物，再将尾气经离心引风机(I)送入净化塔I、净化塔II与送入塔中的净化剂中和净化之。
为了实现上述目的，本发明所采用的技术方案将废轮胎热解制燃油、可燃气，加热常温空气，干化污水厂污泥新工艺包括如下步骤：
1)将废轮胎预处理制成颗粒状(≤5mm)投入热解炉(1)热解；
2)将热解炉(1)产生的气态产物送入冷凝器(2)冷凝得到燃油和可燃气，将燃油送入储油罐(3)，可燃气送入储气罐(4)；
3)回收热解炉(1)中炭黑；
4)将储油罐(3)、储气罐(4)中的燃油、可燃气分别送入空气加热炉(5)加热常温空气；
5)将280℃～320℃高温空气送入热风干化炉(6)干化污泥；
6)将污水厂污泥(含水60％-80％)送入热风干化炉(6)同时将热风干化炉(6)上部排出含水蒸汽的有机臭气送入冷凝器充分冷凝再送入气水分离器(7)排出的有机臭气送入空气加热炉(5)下部高温焚烧。气水分离器(7)下部排出的水集中进净化池处理。
7)将空气加热炉(5)排出的尾气送入袋式除尘机(8)留下尾气中微细颗粒物；
8)将离心引风机(I)排出的尾气送入净化塔I、II与送入的净化剂中和净化之。
9)空气加热炉(5)排出的尾气进入袋式除法机(8)再经离心引风机(I)送入净化塔I。
10)净化塔I、净化塔II排出的净化气由离心引风机(II)排入大气。
本发明与现有污水厂污泥脱水工艺相比本发明的有益效果是，这种废轮胎热解得到的新能源(燃油、可燃气)用于加热空气将高温空气直接用于污水厂污泥干化(常说的烘干)领域，是对现有污泥脱水工艺的一种创造，同时在废资源再生利用领域通过本例实施工艺流程图配置的废轮胎热解炉(1)系统，空气加热炉(5)、热风干化炉(6)气水分离器(7)、袋式除尘机(8)、尾气净化塔I、净化塔II、离心引风机(I)、(II)送入大气。同时回收付产品炭黑、废钢丝、生态水泥料、农用有机肥，全工艺过程无二次污染。
上述实施例阐明的内容应理解为这些实施例仅用于更清楚地说明本发明，而不用于限制本发明的范围，在阅读了本发明之后，本领域技术人员对本发明的各种等价形式的修改均落于本申请所附权利要求所限定的范围。
附图说明：
本工艺流程及设备所述之废轮胎热解炉(1)、空气加热炉(5)、热风干化炉(6)、净化塔I、净化塔II，上述设备附图如后：
图1本发明实施例工艺及设备流程图
图2废轮胎热解炉(1)ZL 2012 1 0033456.9
图3空气加热炉(5)
图4热风干化炉(6)申请号：2017 2 1884948.3
图5净化塔I、II ZL 00 2 52344.2(烟气净化装置)。

Claims (1)

1.废轮胎热解制新能源(燃油、可燃气)，加热常温空气到280℃-320℃干化污水厂污泥新工艺，其特征包括如下步骤：
(1)、将废轮胎破碎成颗粒状，清洗烘干投入500℃热解炉(1)内送入“N2”气密闭热解；
(2)、将热解炉(1)中产生的气态产物送入冷凝装置(2)中分离得燃油、可燃气，并将燃油和可燃气分别送入储油罐(3)和储气罐(4)中，回收热解炉(1)中的剩余物炭黑；
(3)、将热解炉(1)产出的燃油、可燃气用供油站及压缩空气经特制喷嘴送入空气加热炉(5)下部雾化燃烧；
(4)、将高温空气送入热风干化炉(6)下部将含水污泥由上部投入逐层下落与高温热风进行热交换干化过程产生的含水蒸汽的有机臭气集中送入冷凝器，气水分离器(7)再将有机臭气引入空气加热炉(5)下部高温焚烧；
(5)、空气加热炉(5)排出的尾气送入袋式除尘器(8)留下尾气中的微细颗粒物(＜μm30)，再经离心引风机(I)送入净化塔I和净化塔II，再进离心引风机(II)排入大气。
CN201810058241.XA 2018-01-22 2018-01-22 废轮胎热解制新能源加热空气干化污水厂污泥工艺及设备 Pending CN109608012A (zh)

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