China Oxygen-Enriched Circulating Fluidized Bed Gasifier Energy Saving in China

[Introduction] Oxygen-enriched gas users (30% ~ 90%) have higher heating value requirements, and users who need to modify the traditional fixed-bed gasification to produce synthetic ammonia gas head, the heating value can reach 2000kcal / Nm3;
[Coal requirements]: 0 ~ 12mm pulverized coal, coke, etc., not limited by the melting point of coal ash
[Gasifier]: oxygen-enriched + water vapor
[Reliability]: No rotating parts, can run continuously for more than 400 days
[Pressure range]: 0 ~ 50kPaG
Applicable scope of different gases

Gasification typeScope of applicationremarksAir gasificationGeneral gas users with calorific value requirementsCalorific value about 1250kcal / Nm3Oxygenation(30%~90%)Gas users with high calorific value requirements;Users who need to reform the traditional fixed-bed gasification to produce ammonia gas headCalorific value up to 2000kcal / Nm3Pure oxygenationChemicals with low nitrogen content in the gas composition, such as the production of hydrogen, ethylene glycol and other productsMinimum nitrogen content <2%

Technical characteristics

Gasification type
Fluidized bedAtmospheric fixed bed gasificationAir bedHuangtai furnace air gasificationOxygen enrichment in Huangtai furnaceYellow table furnace pure oxygenationDry powder gasificationCoal water slurry gasificationCoal type requirements0 ~ 12mm pulverized coal, coke, etc., not limited by the melting point of coal ash0 ~ 12mm pulverized coal, coke, etc., not limited by the melting point of coal ash0 ~ 12mm pulverized coal, coke, etc., not limited by the melting point of coal ash6 ~ 50mm lump coal feed, high requirements on adhesion, thermal stability, strength, ash melting point, etc.0 ~ 90μm pulverized coal feed, there are certain requirements for ash content and ash melting point0 ~ 140μm coal slurry feed, high requirements for slurry concentration, ash melting point and ash contentGasification agentAir + water vaporOxygen + water vaporPure oxygen + water vaporPure oxygen + water vaporPure oxygen /
Pure oxygen + water vaporPure oxygenReliabilityNo rotating parts, can run continuously for more than 400 days
No rotating parts, can run continuously for more than 400 days
No rotating parts, can run continuously for more than 400 days
Many rotating parts, need to set up a spare furnace
No rotating parts, can run continuously for more than 300 daysThe burner needs to be repaired for about 90 days of continuous operation, and a standby furnace is generally required.Pressure range0~50kPaG0~50kPaG0~50kPaG0~10kPaG0~4.5MPaG0~8.7MPaG

Gasification type
Fluidized bedAtmospheric fixed bed gasificationAir bedHuangtai furnace air gasificationOxygen enrichment in Huangtai furnaceYellow table furnace pure oxygenationDry powder gasificationCoal water slurry gasificationEfficiency
The efficiency of cold gas is 72 ~ 78%, and the energy efficiency of the system after matching the residual carbon furnace is as high as 95%The efficiency of cold gas is 72 ~ 78%, and the energy efficiency of the system after matching the residual carbon furnace is as high as 95%The efficiency of cold gas is 72 ~ 78%, and the energy efficiency of the system after matching the residual carbon furnace is as high as 95%Cold gas efficiency 65 ~ 70%Cold gas efficiency 72 ~ 82%Cold gas efficiency 72 ~ 80%Single furnace capacityEffective gas production 10000 ~ 30000
Nm3 / hEffective gas production: 10,000 ~ 50,000
Nm3 / hEffective gas production 10000 ~ 55000
Nm3 / hEffective gas production 1800 ~ 2400
Nm3 / hEffective gas production 50000 ~ 220,000
Nm3 / hEffective gas production 50000 ~ 220,000
Nm3 / hSingle furnace investmentTotal investment is about 20 million yuan / kNm3
The total investment is about 1.4 million yuan / kNm3The total investment is about 14.5 million yuan / kNm3
The total investment is about 1.67 million yuan / kNm3The total investment is about 45.50 million yuan / kNm3Total investment is about 2.18 million yuan / kNm3Three wastesNo harmful gas emissions, no sewage emissions, slag does not contain harmful substancesNo harmful gas emissions, no sewage emissions, slag does not contain harmful substancesNo harmful gas emissions, no sewage emissions, slag does not contain harmful substancesLarge amount of wastewater discharged, complex components and high treatment costsNo harmful gas emissions, small sewage discharge, slag does not contain harmful substancesNo harmful gas emissions, less sewage discharge, slag does not contain harmful substances

Gas washing ammonia purification and recovery process flow chart