<pre id="txrhz"></pre>

<big id="txrhz"><strike id="txrhz"></strike></big>

    <dl id="txrhz"><sub id="txrhz"></sub></dl>
<big id="txrhz"></big>
    <p id="txrhz"></p>

<output id="txrhz"><video id="txrhz"></video></output>
<big id="txrhz"></big>
    <span id="txrhz"><sub id="txrhz"><form id="txrhz"></form></sub></span>
      <pre id="txrhz"><sub id="txrhz"><ruby id="txrhz"></ruby></sub></pre><track id="txrhz"><th id="txrhz"></th></track>

          <p id="txrhz"><track id="txrhz"><th id="txrhz"></th></track></p>

            <track id="txrhz"></track><track id="txrhz"></track>

            <ruby id="txrhz"></ruby>

            <address id="txrhz"><track id="txrhz"></track></address>
            <var id="txrhz"></var>

            Industry News

            Equipment safety features cryogenic oxygen legal

            2014/04/18

            Method using cryogenic oxygen , the first to liquefy the air , according to an oxygen , nitrogen, different boiling points to separate them . Liquefied air temperature must be reduced to -140.6 ℃ or less . Air separation is generally at a temperature range of -172 ~ -194 ℃ conducted . Legal oxygen by cryogenic device has the following characteristics:
            1 ) cryogenic heat exchangers cryogenic vessels , distillation , etc. and pipes placed in the cold box , and filled with low thermal conductivity of the insulating material to prevent heat from the surrounding incoming reduce cold damage, or the device can not run ;
            2) The material for cryogenic equipment , require sufficient strength at low temperatures and toughness, and good welding workability . Common aluminum alloy, copper alloy, stainless steel and other materials ;
            3 ) high boiling point impurities in the air , such as moisture , carbon dioxide , should be pre- cleared at room temperature . Otherwise it will clog the channel inside the device , so the device does not work ;
            4 ) air acetylene and hydrocarbons into the air separation tower , accumulated to a certain extent , affect the safe operation of , or even explosion. Therefore , you must set purification equipment to clear it ;
            5 ) closed cryogenic liquid storage container when heat into the outside world , there will be part of the cryogenic liquid absorbs heat and vaporization , the pressure is automatically increased. To prevent overpressure safety device must be set up reliable ;
            6 ) cryogenic liquid leak into the foundation, will be the foundation cracking , tilting the device . We must ensure that equipment, piping and valves sealing, thermal expansion and contraction to consider stress and deformation that may arise ;
            7 ) is liquid oxygen impregnated wood , coke and other porous organic materials , when exposed to fire or give a certain impact, intense blasting will occur . Consequently, the cooling box does not allow the porous organic material. For liquid oxygen emissions, should anticipate a dedicated oxygen discharge piping and containers , can not walk trench ;
            8 ) Long-term impact of cryogenic liquid carbon steel plate will rattle . Therefore , cryogenic liquid discharge pipe and discharge chutes can not use carbon steel products ;
            9 ) nitrogen, argon is asphyxiating gas , liquid discharge pipe which should lead to the outdoors. Gas discharge pipe should be a discharge height, not toward the platform stairs outfall ;
            10 ) Oxygen is a strong oxidizer , which can not be discharged directly discharge pipe in unventilated factories.

            欧美国产综合亚洲91_美妇乱妇乱6719熟妇的荡欲_菠萝菠萝蜜视频在线观看_奇米影视7777久久精品
            <pre id="txrhz"></pre>

            <big id="txrhz"><strike id="txrhz"></strike></big>

              <dl id="txrhz"><sub id="txrhz"></sub></dl>
            <big id="txrhz"></big>
              <p id="txrhz"></p>

            <output id="txrhz"><video id="txrhz"></video></output>
            <big id="txrhz"></big>
              <span id="txrhz"><sub id="txrhz"><form id="txrhz"></form></sub></span>
                <pre id="txrhz"><sub id="txrhz"><ruby id="txrhz"></ruby></sub></pre><track id="txrhz"><th id="txrhz"></th></track>

                    <p id="txrhz"><track id="txrhz"><th id="txrhz"></th></track></p>

                      <track id="txrhz"></track><track id="txrhz"></track>

                      <ruby id="txrhz"></ruby>

                      <address id="txrhz"><track id="txrhz"></track></address>
                      <var id="txrhz"></var>