反应釜的夹套类型比较
发布日期：2023-10-26
阅读量：1270
反应釜的夹套类型：-用于反应釜的不同类型的夹套有：
普通夹套
它可以被称为容器周围或容器某些部分上的额外覆盖物。容器壁和夹套壁之间的环形空间用于加热或冷却介质的循环。普通夹套适用于小容量容器以及容器内压力超过夹套压力两倍的操作。
它最适合用蒸汽加热的场合。夹套高度通常达到容器中的液体高度。护套可以制成一件，也可以分为多个部分并且所有部分并行操作。对于较高流量，当下游蒸汽用作加热介质时，优选分段夹套，优选普通夹套。
夹套内可设置螺旋折流板，有助于引起湍流，提高传热系数。具有普通夹套和螺旋挡板的容器。
半管盘管夹套
管道被切成1wo段，半盘管焊接到容器壁上。它有助于提供高速度和高湍流。它还有助于为血管壁提供强度，从而降低血管成本。它提供了结构刚性，这对于高温操作来说是一个优势。为了具有灵活性和高效率，半线圈护套可以分为多个区域。
半线圈护套通常由碳钢制成。不锈钢、蒙乃尔合金。铬镍铁合金和其他合金也可用于制造半线圈护套。显示焊接到外壳的半线圈护套。
如果夹套压力是估计容器壁厚的控制参数，则优选半盘管夹套。它们用于大容量容器以及需要高速循环热油、乙二醇等的地方。在这些夹克中，完全避免了短路循环。
浅凹夹套
它可以通过使用薄片来制造。它对于高夹套压力操作很有用。即使在非常低的流速下，凹窝护套也能引起湍流。可用于循环蒸汽和热油。
容器可以在帽状盘管上配备夹套以进行传热。应选择哪种替代方案取决于工艺要求、操作难易程度和所涉及的成本。与帽形盘管相比，夹套容器确保了更多的传热，但夹套中的传热系数低于帽形盘管中的传热系数。夹套中的压降比帽形线圈中的压降小。
加热或冷却介质不可能在夹套中形成通道，除非提供螺旋挡板。与帽形盘管相比，夹套的泵送成本较低，对于相同的工作压力，夹套需要比帽形盘管更大的厚度。
与帽贝线圈相比，护套的构造更容易，因为在帽贝线圈的构造中涉及大量切割、弯曲、焊接。因此护套结构比帽形线圈便宜。
如果比较夹套和帽形盘管的传热面积，可以看出夹套比帽形盘管具有更大的表面积。
容器可设有夹套或帽状盘管，用于容器中的热传递。选择两者中的任何一个取决于工艺的要求、操作的难易程度和所涉及的成本。
金宗企业创立于1999年，20多年来一直专注于化工、涂料、食品、药品、化妆品等机械设备的研发制造，为用户提供机械设备设计及制造、智能控制系统研发、工程设计安装等一站式解决方案，助力客户降本增效，推动数智化转型，打造安全、环保、高效、智能的未来工厂。
专栏：技术交流
原文链接：
阅读原文
FreeMarker template error (HTML_DEBUG mode; use RETHROW in production!)
The following has evaluated to null or missing:
==> langConfig [in template "public_include/wap/module/version_1/language.html" at line 49, column 14]
----
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)??
----
----
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]
----
Java stack trace (for programmers):
----
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)