1. <b id="4gkti"><acronym id="4gkti"></acronym></b>
      <source id="4gkti"></source>
    <source id="4gkti"><menu id="4gkti"><ins id="4gkti"></ins></menu></source>

    1. <samp id="4gkti"></samp>

        <source id="4gkti"></source>
      1. <b id="4gkti"></b>
        <b id="4gkti"><p id="4gkti"><code id="4gkti"></code></p></b>
        高濃度硫酸

        News

        Products

        Contact Us

        Yingkou Shenghai Chemical Co., Ltd

        Address: Nanlou Development Zone, Yingkou, Liaoning Province

        Tel: 0417-5275777

        Fax: 0417-5275777

        Postal code: 115103

        Website: www.phillipfrey.com

        Email: ykshhg@ykshhg.com

        Preparation of fuming sulfuric acid products

        Your current location: Home >> News >> Shenghai News

        Preparation of fuming sulfuric acid products

        Date:2017-04-10 Author:盛?;?/span> Click:

        Preparation of fuming sulfuric acid products:


        20% fuming sulfuric acid can be produced in a sulfuric acid plant using the contact method, which involves setting up a fuming sulfuric acid absorption tower in front of the 98.3% sulfuric acid absorption tower. The 20% fuming sulfuric acid absorbs and converts the gas containing 7% to 10% sulfur trioxide, while adding 98.3% sulfuric acid to the circulating acid to maintain its concentration unchanged. 65% fuming sulfuric acid can be obtained by mixing 20% fuming sulfuric acid with liquid sulfur trioxide, or by imitating the manufacturing method of 20% fuming sulfuric acid, establishing an absorption tower with 65% fuming sulfuric acid circulating and spraying, absorbing 100% sulfur trioxide gas, and adding 20% fuming sulfuric acid to adjust the concentration of circulating acid.


        Chinese name of chemical: fuming sulfuric acid


        Chemical name in English: sulfuric acid fuming


        English name: Oleum


        Technical specification code: 934


        CAS No.: 8014-95-7


        Molecular formula: H2SO4 · xSO3


        Molecular weight: 98+x (80.06)


        Legal purposes


        Weigh the ampoule ball (accurate to 0.001 g), then heat the ball on a low fire, quickly insert the capillary of the ball into the sample, inhale about 0.4g-0.7g of the sample, immediately sinter and seal the top of the capillary with flame, and dry the acid solution on the outer wall of the capillary with a small fire, then weigh again.


        Place the weighed ampoule ball into a 500ml conical bottle with a grinding stopper containing 100m of working water, tighten the bottle stopper, shake vigorously to crush the ampoule ball, continue shaking until the misty sulfur trioxide gas disappears. Open the bottle stopper, rinse the bottle stopper with water, and then gently crush the capillary of the ampoule ball with a glass rod. Rinse the bottle neck and glass rod with water for later use


        Fuming sulfuric acid

        Browse:

        99久久中文字幕人妻_秋霞影院无码尤物在线观看_无码专区潮喷不卡_有码无码中文字幕自慰系列

        1. <b id="4gkti"><acronym id="4gkti"></acronym></b>
            <source id="4gkti"></source>
          <source id="4gkti"><menu id="4gkti"><ins id="4gkti"></ins></menu></source>

          1. <samp id="4gkti"></samp>

              <source id="4gkti"></source>
            1. <b id="4gkti"></b>
              <b id="4gkti"><p id="4gkti"><code id="4gkti"></code></p></b>