Abstract:

This paper mainly introduces the application of high pressure PSA technology developed by Haohua Chemical Technology Group Co., Ltd. in the hydrogen recovery from methanol gas. It is characterized by advanced technology, desorption under high pressure, high degree of automation, excellent performance of program-controlled valve and adsorbent, and trouble-free long-term operation. The 9-year operation results of the plant show that the hydrogen yield of product is more than 5 percentage points higher than the design yield, and the methanol yield increases by 8-10%. The product gas pressure can reach 4.5 MPa (G), and the desorption gas pressure can reach 0.25 MPa (G). It can be directly sent to the natural gas reformer for combustion without pressurization. The energy consumption is much lower than that of ordinary PSA, of which the product gas pressure is 3.2 MPa (G) and the desorption gas pressure is 0.02 MPa (G), and the economic benefit is remarkable.

Key words:

high pressure')">"> high pressure, pressure swing adsorption/PSA, high pressure desorption