How to choose catalysts for fertilizer production?
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At present, synthetic ammonia production in China relies mainly on coal and natural gas as raw materials. Due to the recent international economic crisis, exports of fertilizers and related products have been restricted, resulting in a continuous decline in fertilizer prices. Most manufacturers that use coal as a raw material are operating at a loss, while those that use natural gas can barely survive thanks to the stable operation of their facilities and the low-price quota of gas provided to them. However, there are calls through various channels to raise the price of natural gas. In my opinion, an increase in natural gas prices is inevitable. How will the numerous companies in the natural gas fertilizer industry manage to get through this difficult period? Only by saving energy and reducing consumption, making the most of existing equipment to minimize energy use, and improving the conversion rate of natural gas, can we take this opportunity to solicit information from our online community regarding the operation of catalysts in various sections of natural gas plants: conversion catalysts, medium-shift catalysts, low-shift catalysts, methanation catalysts, and ammonia synthesis catalysts. Based on the data I have, the best conversion and low-shifting catalysts available in China can achieve equilibrium concentrations
Compared with ordinary methanation catalysts, high-pressure methanation catalysts have the following characteristics: 1. High strength； 2. Good activity, especially at low temperatures ； 3. Easy to load, to avoid bridge erection ； 4. Keep the particle size as small as possible to increase the external surface area.
It has a low bulk density and contains almost no free water; its loss on ignition and shrinkage rates are significantly lower than those of other similar products. It features good reactivity and stability, high strength, and excellent resistance to toxins, making it suitable for the shift reaction of low CO contents in hydrogen and ammonia production processes using various feedstocks such as natural gas, coke oven gas, refinery gas, naphtha, coal, and oil field gas. This applies equally to axial transformation furnaces and axial-radial transformation furnaces. 【Physical Properties】 Appearance, Geometric dimensions: Diameter × Length in mm, Bulk density in kg/l, Side pressure strength in N/cm, Specific surface area in m²/g. It is a black, metallic-looking cylinder with dimensions of Ф 5 × 5 or Ф 5 × 2.5; its bulk density ranges from 1.3 to 1.5, side pressure strength is ≥ 160 for the long version and ≥ 130 for the short version, while the specific surface area is between 60 and 80
1. Good activity at low temperatures； 2. Strong resistance to decarburization, suitable for operations with a low carbon-to-water ratio ； 3. High strength, not prone to powdering ；