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在VOCs治理(lǐ)中,如何正确(què)选用管道爆(bào)燃和管道爆轰阻(zǔ)火器?

发布于: 2025-04-10 14:46
阅读(dú): 12

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由于VOCs绝大多数(shù)易(yì)燃易爆,在(zài)VOCs治理系(xì)统中,阻火器是系统安(ān)全(quán)的最后一道非(fēi)常(cháng)重(chóng)要的安(ān)全屏(píng)障,如(rú)何正(zhèng)确选用管(guǎn)道(dào)爆燃和管道爆(bào)轰阻火(huǒ)器?他们有什么(me)相同(tóng)点和不同(tóng)点?本文基于GB/T 20801.6《压力管道规(guī)范工业(yè)管道第6部(bù)分:安(ān)全(quán)防(fáng)护》、SH/T 3413《石(shí)油化工石油气管道阻火器选用、检验及验收标准》等标准,对管道爆燃阻火器和(hé)管道爆(bào)轰阻(zǔ)火器的特点、选用和(hé)应用(yòng)场合进(jìn)行解析(xī)。

�

【相同点(diǎn)】

(一)、管道爆燃阻火器和管道爆轰阻火器的(de)共同点(diǎn) 
1.均是安装(zhuāng)在(zài)管道中的阻火(huǒ)器; 
2.应满足ISO16852要求,在资质机构取得ATEX型(xíng)式认证,包括型式试(shì)验证书和工厂生产过程质(zhì)量体系证书。 
3.均依(yī)照介质(zhì)爆炸组级别(bié)分为(wéi)IIA、IIB3、IIB和IIC类; 
4.同样爆炸组(zǔ)级别的阻火器,无(wú)论(lùn)爆燃还是爆轰,阻(zǔ)火(huǒ)安(ān)全缝隙值和阻(zǔ)火盘厚(hòu)度应一(yī)致;

【不同点】

(二(èr))管道爆燃阻火器和管道爆轰阻火器(qì)的不同点 

1.阻(zǔ)灭的爆炸类型(xíng)不一样 
管道爆燃(rán)阻火器:阻止管道内发生的爆燃(火焰以(yǐ)亚音速(sù)传播)和短时间燃烧(1min)。 
管道爆轰(hōng)阻火器(qì):阻止管道内发生的爆燃(火焰以(yǐ)亚音(yīn)速传播)、爆(bào)轰(火焰以亚音速和(hé)超(chāo)音速传播(典型的碳氢化合物速(sù)度是1600m/s,氢气可高达2000m/s)和燃烧(1min),并伴随冲(chōng)击(jī)波。
爆轰又分为(wéi)稳态爆轰和非稳态爆轰两种形式,见图1所示。
  • 非稳态爆轰:由爆(bào)燃转(zhuǎn)为稳态爆(bào)轰的瞬时过渡阶段,火焰(yàn)传播速度和冲击波显著高于稳态爆轰。 
  • 稳态爆轰:火焰以稳定的速度和冲击波传播。�
    2.结构上的不同
    阻火盘数量:爆轰(hōng)阻火器的阻火盘(pán)更多。 
    冲击波吸波装置(zhì):爆轰阻火(huǒ)器设(shè)置了冲击(jī)波吸波装(zhuāng)置,减少(shǎo)爆(bào)轰冲击波对(duì)阻火(huǒ)盘的冲击(jī)。�
    3.安装要求不同(tóng)
    管道(dào)爆燃阻火器:其法兰面距离潜在火(huǒ)源的距离(L)与管径(D)的比值(L/D)应满足表1的要求(qiú)。�
    比如(rú)DN150的爆燃阻火器,其安装位置(zhì)距离火源的长度必须控制在(zài)7.5米以内。 
    管(guǎn)道稳态爆轰阻(zǔ)火器:其法兰面距离潜在火源的距离(L)与管径(D)的(de)比值(L/D)不应小于120。 
    管道非稳(wěn)态爆轰阻火器:无(wú)安(ān)装限制。

     

    【三(sān)、规范要(yào)求】

     1.GB/T 20801.6《压力管(guǎn)道规范 工业管道 第(dì)6部(bù)分:安全(quán)防护》 
    • 第5.1.1:阻火器应符合ISO16852和CEN/TR 16793等标准的规(guī)定
    • 附录D.2:管道型阻火器(qì)不耐长时间燃烧;管道(dào)稳(wěn)态爆轰阻火器的安(ān)装应避开不稳定爆轰位(wèi)置;阻火(huǒ)器产(chǎn)品测试包(bāo)括阻(zǔ)爆(bào)燃(rán)、阻(zǔ)爆轰性能、耐烧时间(jiān)、流(liú)量和压(yā)力降(jiàng)等。 
    2.SH/T 3413-2019《石油化工(gōng)石油气管道阻火器选用、检(jiǎn)验(yàn)及验(yàn)收标准》 
    • 第6.2.10条规定(dìng):对于未识别点(diǎn)火源位置的,不得使用(yòng)阻爆燃阻火器。 
    • 第(dì)6.2.11条(tiáo)规定(dìng):安装在管道中的(de)稳态爆轰型阻火器(qì),其法兰面至(zhì)潜(qián)在火源的距离要求应由制造商(shāng)提供;当安装距离不能满足要求(qiú)时应选用非稳态(tài)爆轰型阻火(huǒ)器。 
    • 第6.2.12条规(guī)定:储罐顶部(bù)的油气集(jí)合管道系统(tǒng)、装卸设施的(de)油气排放(或回收(shōu))系(xì)统的总(zǒng)管及分(fèn)支管道应选用稳态爆轰型阻火器(qì),阻火器宜靠近罐、容(róng)器或设(shè)备安装。
    • 第6.2.15条(tiáo)规定:对于(yú)安装在管道(dào)中的(de)爆燃(rán)阻火器,非保护侧管道的(de)直径不应大于阻火器接(jiē)口直径,受保护侧(cè)管道的直径不应小于非保护侧管道的直径(jìng)。
      比(bǐ)如DN150的爆燃阻火器,其安(ān)装位置距离火源(yuán)的长度必须控制在7.5米(mǐ)以内。 
      管(guǎn)道稳态爆轰(hōng)阻火器:其法(fǎ)兰(lán)面距离(lí)潜在(zài)火源的距离(L)与管径(D)的比值(L/D)不应小于120。 
      管(guǎn)道非稳态爆轰阻火器:无安装限制。

       

      【三、规范(fàn)要求】

       1.GB/T 20801.6《压力管道规范 工(gōng)业管道 第6部(bù)分:安全(quán)防(fáng)护》 
      • 第5.1.1:阻火(huǒ)器应符合ISO16852和CEN/TR 16793等标准的(de)规定
      • 附录D.2:管道型(xíng)阻火器不耐长时间(jiān)燃(rán)烧(shāo);管道稳(wěn)态(tài)爆轰(hōng)阻火(huǒ)器的安装应避开不稳定爆轰位置(zhì);阻火器(qì)产品测试包括阻(zǔ)爆燃、阻爆轰性能、耐烧时间、流量和压(yā)力降等。 
      2.SH/T 3413-2019《石油化工石油(yóu)气管道阻火器选用、检验及验收(shōu)标准(zhǔn)》 
      • 第6.2.10条规定:对于未识(shí)别点火源(yuán)位置的,不得使用阻爆燃阻(zǔ)火器。 
      • 第6.2.11条规定:安装在(zài)管道中的稳态爆轰(hōng)型阻(zǔ)火器,其法兰面至潜在火(huǒ)源的距离要求应由(yóu)制(zhì)造商提供;当安装(zhuāng)距离(lí)不能(néng)满(mǎn)足(zú)要求时(shí)应选用非稳态爆轰型阻火器。 
      • 第6.2.12条(tiáo)规定:储罐顶部的(de)油气集合管道系统、装卸设施的油气排(pái)放(或回(huí)收)系统(tǒng)的总管及分支管道应选用稳态爆轰型阻火器,阻(zǔ)火(huǒ)器宜靠近罐(guàn)、容器(qì)或设备安装。
      • 第(dì)6.2.15条规定:对于安装在管道中的爆燃阻火器,非保护侧管道的直径不应大于阻火器接口直径,受保护侧(cè)管(guǎn)道的直径不应小于非保护侧(cè)管道的(de)直径。�

        来源(yuán):普瑞泰格投(tóu)稿;VOCs减排(pái)工作(zuò)站再编辑。

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更新时间:2025-07-16 16:13 来源:www.jian.sys.jixi.ww38.viennacitytours.com