Iron ozide desulfurizer

Iron oxide desulfurizer is an industrial purification material mainly composed of iron oxide, specifically used to remove hydrogen sulfide from gases and widely used in the treatment of coal gas, natural gas, and chemical waste gas.The desulfurization mechanism involves the chemical reaction between iron oxide and hydrogen sulfide in the desulfurizer to form iron sulfides. Organic sulfur such as sulfur oxide carbon, carbon disulfide, and thiols are first converted into hydrogen sulfide in the presence of hydrogen gas, and then react with iron oxide. Iron oxide desulfurizer is mainly used in urban gas purification, fertilizer industry, petrochemical industry, natural gas purification, coal-fired power generation and steel smelting, industrial waste gas treatment and other fields.

Common specifications: color rust red, cylindrical 5-6mm

Product Introduction

Iron oxide desulfurizer is mainly used for desulfurization and denitrification of chemical plant waste gas treatment. The rapid development of China’s industry has also led to environmental pollution, and air pollution is becoming increasingly serious. Currently, the treatment of waste gas mainly relies on activated carbon adsorption method. Iron oxide desulfurizer is a highly efficient purification agent that is mainly composed of iron oxide and processed by adding different accelerators. Under different conditions, it has high removal performance for hydrogen sulfide gas, and also has a certain removal effect on thiol organic sulfur and most nitrogen oxides.

Iron oxide desulfurizer is mainly suitable for fine desulfurization of urban gas, fertilizer, and other chemical industrial sites’ gas or synthetic raw material gas. It is also applicable for the removal of hydrogen sulfide from gases such as water gas, coke oven gas, oilfield gas, liquefied gas, biogas, and waste gas in metallurgy, textile, chemical fiber, light industry, military industry, electronics, and environmental protection departments.

  1. The iron oxide desulfurizer at room temperature (20-40 ℃) and low temperature (120-140 ℃) is hydrated iron oxide, which can be formed by adding alkaline components, sawdust, cement, etc. to natural products or industrial waste materials containing α or γ – Fe2O3 · H2O. Usually containing Fe2O350-65%, with a bulk density of about 0.8kg/L and a porosity of about 60%.
  2. Intermediate temperature (150-250 ℃) iron oxide desulfurizer, also known as iron alkali absorbent. Typical composition (%): Fe203:41-44%, Na2CO3: 30%, the rest are aluminum oxide, silicon oxide, calcium oxide, etc. The bulk density is 0.71-0.73kg/L, and the porosity is~50%. Under the conditions of temperature of 150-250 ℃, airspeed of 00-200h-1, and O2 content of 0.2-0.5%, COS, CS2, and RSH can be converted and absorbed, and sulfates, sulfur compounds, and elemental sulfur can be produced while carbon is precipitated. Can be used to purify gases with low organic sulfur content.
  3. High temperature (350-400 ℃) iron oxide desulfurizer is mainly composed of iron oxide, often added with copper oxide, chromium oxide, cement, etc. The bulk density is 1.2-1.7kg/L, and the porosity is about 50%.

  1. City gas purification: Iron oxide desulfurizer can effectively remove sulfur-containing compounds such as hydrogen sulfide from city gas, improve the quality of gas, and make it more in line with usage standards.
  2. Fertilizer industry: Carbonized gas desulfurization in small and medium-sized synthetic ammonia plants to reduce the consumption of copper ammonia solution.
  3. Petrochemical industry: During the petroleum refining process, a large amount of sulfur-containing waste gas is generated. Iron oxide desulfurizers can be used to treat these waste gases and reduce environmental pollution.
  4. Natural gas purification: Natural gas may also contain impurities such as hydrogen sulfide. The use of iron oxide desulfurizers can improve the quality of natural gas and make it more suitable for use as an energy source.
  5. Coal fired power generation and steel smelting: In coal-fired power generation, sulfides in the fuel will generate sulfur dioxide during combustion. Iron oxide desulfurizers can convert sulfur dioxide into sulfates, reducing sulfur dioxide emissions; In steel smelting, iron oxide desulfurizer can convert sulfides in steel into sulfates, reduce the sulfur content in steel, and improve the quality of steel.
  6. Industrial waste gas treatment: Various industrial waste gases often contain harmful gases such as hydrogen sulfide. Iron oxide desulfurizers can be used for the purification treatment of these waste gases to reduce their harm to the environment.
  7. In other industrial sectors ：such as metallurgy, textiles, chemical fibers, light industry, military industry, electronics, and environmental protection, iron oxide desulfurizers are often used to remove hydrogen sulfide from gases such as water gas, coke oven gas, oilfield gas, liquefied gas, biogas, and exhaust gas.

  1. Lay two layers of stainless steel mesh with mesh size less than 8-10 mesh on the grid plate of the desulfurization tower.
  2. Lay another layer of crushed coke blocks with a thickness of 20-30mm and a diameter of 20-30mm on the wire mesh.
  3. Due to the generation of dust during transportation and loading/unloading, screening is required before loading.
  4. Special loading tools should be used, and the discharge pipe should be able to rotate freely, so that the material can be evenly loaded around the reactor. It is strictly prohibited to pour desulfurizer from the middle to prevent uneven loading.
  5. The strength of desulfurizer increases with the increase of sulfur absorption during use, so it should be packed in layers in the desulfurization tower. Each layer should be marked according to the height of desulfurizer filling to ensure sufficient, flat, and even loading.
  6. During the loading process, it is strictly prohibited to directly step on the sulfur agent. Wooden boards can be placed on the material layer before entering for material scraping and inspection of the loading situation.
  7. At the inlet of the desulfurization feed gas, grid plates or crushed coke blocks should be installed to prevent the dispersion of the desulfurizer.

  1. Generally, desulfurization towers do not require special heating and energy consumption, but outdoor desulfurization devices must be insulated in winter to prevent gas overcooling, reduce desulfurizer activity, and prevent water accumulation on the bed from deteriorating operation.
  2. Before desulfurization, efforts should be made to remove tar and water bubbles.
  3. The desulfurizer can be replaced in one go or in sections according to the direction of the airflow.
  4. Regularly discharge the water separator in front of the desulfurization tower and the accumulated water at the bottom of the desulfurization tower. It is strictly prohibited for gas to enter the desulfurization tower with liquid.
  5. The operation should be stable and the use should be reasonable to maximize its excellent performance.

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