反应釜广泛应用于化工，医药，染料，农药，有机合成，石油，食品添加剂和国防工业及科学研究中的反应，蒸发，浓缩，合成，萃取，聚合，矿化等。
外盘管反应釜由釜体、釜盖、夹套、搅拌器、传动装置、轴封装置、支承等组成。材质一般有碳锰钢、不锈钢、锆、镍基（哈氏、蒙乃尔）合金及其它复合材料；由于用户因生产工艺、操作条件不尽相同，外半管反应釜搅拌形成一般有锚式、浆式、涡轮式、推进式或框式。外壁焊接支座，支座有悬挂或支承式两种，锅体下部开有放料口，上部有相应工艺管口。
外盘管反应釜与筒体夹套反应釜对比：
筒体夹套反应釜，能够达到无间隙，无损耗的的换热效率，但是这样整个内筒体变成了一个承压空间，会是内筒体板厚加厚，增加了设备制造成本。一般情况下蒸汽加热反应釜容积在2000L以上都建议采用外盘管反应釜。
外盘管反应釜承受压力高，可以降低内部筒体的板厚，内筒体被分割成受半圆管局部外压，但是外盘管焊接加工的时候，管与管之间要留有加工焊接空间，这样就减少了换热面积，换热效率会相对低一些。
外盘管反应釜的半圆管使内筒体被分割成受半圆管局部外压，外盘管又能防止内筒体发生失稳，就反应釜总体看来，每道外盘管又成了反应釜筒体的加强圈，取代了受整体内压的夹套筒体，外盘管受压能力强可在0.6～2.5MPa之间，这样在非热敏性的物料反应过程中，可使传热介质工况质量大为提高。以蒸汽传热为例，使用筒体夹套反应釜，常将蒸汽减压控制在0.4MPa。而使用外盘管夹套反应釜，蒸汽压可在0.7～1.3 MPa，不必再减压。由于外盘管大大改善了内筒的受力状态，因此内筒壁厚也就相对减薄，由于外盘管焊接加工有间隙，因此，当所需传递热量相同时，外盘管反应釜传热面积相应较小。
反应釜属于非标产品，选择反应釜的时候要综合考虑各种因素，结合自身的工艺需求，才能定制出节能，环保，高效率的优质产品。
The following has evaluated to null or missing:
==> langConfig [in template "public_include/wap/module/version_1/language.html" at line 49, column 14]
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Tip: If the failing expression is known to be legally refer to something that's sometimes null or missing, either specify a default value like myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing</#if>. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)??
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FTL stack trace ("~" means nesting-related):
- Failed at: #if langConfig.status?string = "false" [in template "public_include/wap/module/version_1/language.html" at line 49, column 9]
- Reached through: #include "/public_include/wap/module/... [in template "tpl/2018/03/17/2613443926933696//wap/com_5.html" at line 5, column 1]
- Reached through: #include "com_5.html" [in template "tpl/2018/03/17/2613443926933696//wap/displaynews.html" at line 69, column 6]
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Java stack trace (for programmers):
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freemarker.core.InvalidReferenceException: [... Exception message was already printed; see it above ...]
at freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:134)
at freemarker.core.UnexpectedTypeException.newDesciptionBuilder(UnexpectedTypeException.java:80)
at freemarker.core.UnexpectedTypeException.<init>(UnexpectedTypeException.java:43)
at freemarker.core.NonHashException.<init>(NonHashException.java:49)
at freemarker.core.Dot._eval(Dot.java:48)
at freemarker.core.Expression.eval(Expression.java:81)
at freemarker.core.BuiltInsForMultipleTypes$stringBI._eval(BuiltInsForMultipleTypes.java:692)
at freemarker.core.Expression.eval(Expression.java:81)
at freemarker.core.EvalUtil.compare(EvalUtil.java:111)
at freemarker.core.ComparisonExpression.evalToBoolean(ComparisonExpression.java:62)
at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:48)
at freemarker.core.Environment.visit(Environment.java:327)
at freemarker.core.Environment.visit(Environment.java:333)
at freemarker.core.Environment.include(Environment.java:2509)
at freemarker.core.Include.accept(Include.java:171)
at freemarker.core.Environment.visit(Environment.java:327)
at freemarker.core.Environment.visit(Environment.java:333)
at freemarker.core.Environment.include(Environment.java:2509)
at freemarker.core.Include.accept(Include.java:171)
at freemarker.core.Environment.visit(Environment.java:327)
at freemarker.core.Environment.visit(Environment.java:333)
at freemarker.core.Environment.process(Environment.java:306)
at freemarker.ext.servlet.FreemarkerServlet.processEnvironment(FreemarkerServlet.java:946)
at freemarker.ext.servlet.FreemarkerServlet.process(FreemarkerServlet.java:910)
at freemarker.ext.servlet.FreemarkerServlet.doGet(FreemarkerServlet.java:769)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at com.kenfor.iyong.web.util.filter.NotAllowedToTunFilesFilter.doFilter(NotAllowedToTunFilesFilter.java:154)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at com.kenfor.iyong.web.util.filter.InvalidXSSFilter.doFilter(InvalidXSSFilter.java:40)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve.invoke(RedisSessionHandlerValve.java:26)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:528)
at org.apache.coyote.ajp.AbstractAjpProcessor.process(AbstractAjpProcessor.java:873)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:687)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1520)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1476)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)