Vertical roller mill is carried out - 1 views

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  #1 betsy stone on 11 Aug 14

   

  Different embodiments of the methanation stage can be described as follows with reference to FIGS. 2 to 4. The reaction product from methanation stage F, after cooling with the condensation of water vapor, can be compressed by means of the compressor G to the desired discharge pressure, e.g., to 60 atmospheres, and can then be carried through the final methanation stage H for the purpose of converting any remaining carbon dioxide and hydrogen completely to methane, at a high pressure to promote the reaction. Referring again to FIG. 1,how to mine limestone coal is introduced through input 1 which is in the form of a presure lock, and the gasification agents, steam and oxygen, are fed through lines 2 and 3 into the pressure gasifier A. High-pressure steam produced in the pressure gasifiers is brought out through line 13 and part of it is returned to line 2 as a gasification agent. An ash discharge 24 is shown, which is also in the form of a pressure lock.
  
  The raw pressure gasification gas from A is cooled in cooling systems (not shown) down to about 200°C. After separation of the condensates the raw gas emerges through line 4 and is divided between line 5 and 6. The partial stream going to the shift converter B through line 5 is further enriched with water vapor if desired, and then reacted in a known manner on a cobalt-molybdenum catalyst at about 350° to 450°C, thereby achieving a residual concentration of CO of about 4 percent by volume. The excess heat from the CO conversion in B is carried out through line 14 in the form of high-pressure steam. The converted gas then passes through line 7 to the converted gas purification system C in which it is cooled,vertical roller mill in cement industry the condensate containing tar oil and water is removed, and the gaseous impurities and carbon dioxide are washed out. The resulting gas stream in line 8 is the one that is rich in hydrogen and poor in CO and CO2 which passes into the methanation stage F.
  
  The raw gas stream in line 6 is first cooled in gas purification system D down to the ambient temperature, the condensates of tar oil and water being separated, and it is washed with methanol in a two-stage low-temperature washing process so that the impurities are completely removed, but the CO2 content is only slightly altered. Then this stream, too, is delivered to the methanation stage F.

   

  <div class="cArrow"> </div><div class="cContentInner">Different embodiments of the methanation stage can be described as follows with reference to FIGS. 2 to 4. The reaction product from methanation stage F, after cooling with the condensation of water vapor, can be compressed by means of the compressor G to the desired discharge pressure, e.g., to 60 atmospheres, and can then be carried through the final methanation stage H for the purpose of converting any remaining carbon dioxide and hydrogen completely to methane, at a high pressure to promote the reaction. Referring again to FIG. 1,<a href="http://www.sellercrusher.com/solutions/how-to-mine-limestone.html" rel="nofollow">how to mine limestone</a> coal is introduced through input 1 which is in the form of a presure lock, and the gasification agents, steam and oxygen, are fed through lines 2 and 3 into the pressure gasifier A. High-pressure steam produced in the pressure gasifiers is brought out through line 13 and part of it is returned to line 2 as a gasification agent. An ash discharge 24 is shown, which is also in the form of a pressure lock. <br /> <br /> The raw pressure gasification gas from A is cooled in cooling systems (not shown) down to about 200°C. After separation of the condensates the raw gas emerges through line 4 and is divided between line 5 and 6. The partial stream going to the shift converter B through line 5 is further enriched with water vapor if desired, and then reacted in a known manner on a cobalt-molybdenum catalyst at about 350° to 450°C, thereby achieving a residual concentration of CO of about 4 percent by volume. The excess heat from the CO conversion in B is carried out through line 14 in the form of high-pressure steam. The converted gas then passes through line 7 to the converted gas purification system C in which it is cooled,<a href="http://www.sellercrusher.com/solutions/vertical-roller-mill-in-cement-industry.html" rel="nofollow">vertical roller mill in cement industry</a> the condensate containing tar oil and water is removed, and the gaseous impurities and carbon dioxide are washed out. The resulting gas stream in line 8 is the one that is rich in hydrogen and poor in CO and CO2 which passes into the methanation stage F. <br /> <br /> The raw gas stream in line 6 is first cooled in gas purification system D down to the ambient temperature, the condensates of tar oil and water being separated, and it is washed with methanol in a two-stage low-temperature washing process so that the impurities are completely removed, but the CO2 content is only slightly altered. Then this stream, too, is delivered to the methanation stage F.</div>

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