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 Brief Introduction of "Supercarbon"

"Supercarbon" is another effort developed by Mesocrystalline Environment following the integrated cycle treatment process of Foss Desulfurization and Denitrification. It includes two series of products: CTDD-1, which is composed of alkaline material and activated carbon based on sludge, and CTDD-2, which is composed of biomass and activated carbon based on sludge for movable bed. It has some similar functions with activated carbon, such as removing SO2, NOX, mercury, fluorine, dioxins, VOC, VOD and dust in flue gas. However, compared with activated carbon, it has obvious advantages such as higher safety, no ammonia injection, no waste water, more stable system operation, lower construction and operation costs, and resource utilization of by-products.

Comparison between Supercarbon and Activated Carbon

Project picture

 

entry name

Activated carbon materials

Base-based Supercarbon Materials            (CTDD-1 series)

Sludge-based Supercarbon Material            (CTDD-2 series)

Appearance shape and heap specific gravity

Similar appearance

Similar appearance, different colors and slightly higher heap specific gravity

Agreement

Compressive Strength and Wear Resistance

High

Lower

High

Removal mechanism of pollutants

Adsorption and Catalytic Reaction

Chemical reaction is the main and adsorption is the auxiliary.

Adsorption, Chemistry, Catalysis            The three are the main ones.

Sulfur capacity and nitrate capacity

High efficiency of desulfurization and denitrification

The sulphur and nitrate capacities are more than 8 times of those of activated carbon, respectively.

High efficiency of desulfurization and denitrification

Flammability

Spontaneous combustion

Non combustible

≥650℃

Are adsorbents reused

Recycling 50 times

Recycle 5 times

Recycling 50 times

Removal of dioxins

Adsorption and harmless removal

Adsorbent

Adsorbable and harmless removal

Does Denitrification Spray Ammonia

Ammonia injection

No ammonia injection

No ammonia injection

Requirements for inlet flue gas temperature

Requirements, below 140 degrees

No requirement, no need to meet the wind

Wind needs to be exchanged only at 180 C

Nitrogen protection

Need

Unwanted

Unwanted

Analytical heat source

Hot smoke

Microwave oscillation, requiring only a small amount of steam

Hot smoke

waste water

Wastewater from acid production

nothing

Acid-making wastewater;            No wastewater is produced in building material production

Waste disposal costs

nothing

No (as building materials, slag, cement additives)

nothing

Number of Maintenance Operators

More than 40 people

12 person

More than 20 people

Complexity of Purification Unit

The process is long, the process is complex, and there are many supporting safety facilities, which need to be carefully operated and maintained.

 

The adsorption device is simple and safe.

The process is consistent with activated carbon, safety and operation are consistent with activated carbon.

Application scenario

Movable bed

fixed bed

Movable bed

 

Supercarbon Material-Base Supercarbon Material (CTDD-1 Series)

Advantages of Base-based Supercarbon Materials (CTDD-1 Series)

 More flexible application

Because CTDD-1 series of Alkali-based supercarbon materials (CTDD-1 series) have 8 and 10 times the sulfur and nitrate penetration capacities of traditional activated carbon respectively, they are more flexible in application. They can be used not only in fixed bed, but also in movable bed instead of traditional activated carbon process. They can be used in gas generator, hot blast stove, gas boiler, sintering, pelletizing and coke oven, and are especially suitable. It is suitable for HS removal in petroleum, petrochemical and other fields.

 Higher removal efficiency

Because of its higher sulfur and nitrate capacities, it is more adaptable to the initial concentration of sulfur dioxide and nitrogen oxides. Under the flue gas conditions of 1 600 mg/Nm3 and 400 mg/Nm3, the removal efficiency of CTDD-1 series materials and technologies can reach nearly zero (the removal efficiency is more than 99% and the denitrification efficiency is more than 99%).

 No potential safety hazard

The CTDD-1 series of Alkali-based super-carbon materials (CTDD-1 series) completely solved the safety problems such as deflagration in activated carbon desulfurization bed due to its main components of alkaline materials and sludge-based activated carbon; moreover, the whole process does not need ammonia spraying, and there is no ammonia water consumption and ammonia escape problem, so the system is more safe and reliable; the dry reaction environment also has no water consumption and wastewater discharge problems;

 Lower cost

For example, in the treatment of iron and steel sintering, the treatment cost of base super-carbon materials (CTDD-1 series) 20 yuan/ton ore (desulfurization and denitrification) has greater advantages than other process routes.

 Three "Zero" Standards: "Zero" Water Consumption, "Zero Wastewater" and "Zero Risk"

1. Fully dry reaction environment, anhydrous consumption and wastewater discharge;            

2. Using microwave vibration to analyse and consume a small amount of steam, no waste water is produced in the process of analysing.            

3. Base-based super-carbon materials (CTDD-1 series) are composed of non-combustible inorganic materials. The whole process does not need nitrogen protection. Full automation of feeding and feeding can make the operation process 100% safe.                  

 By-product treatment is more flexible

By-products of flue gas treatment can be disposed of by analytical method or abandonment method according to different needs of owners. If the enterprise has useful acid demand, it can be directly analyzed. These by-products can also be sent to building materials factories by discarding method for the production of high-grade building materials or for the use of cementitious materials in mixing stations.

Application Forms (Three)

Desulfurization, denitrification, desulfurization and denitrification composite.

 

Charts of Performance Data of Several Different Base Supercarbon Materials (CTDD-1 Series) and Traditional Activated Carbon in Sulfur and Nitrogen Capacity

 

 

 

It can be seen from the figure that SO2 begins to appear after 92 hours, and reaches the penetration time (when SO2 concentration is 13 ppm), which lasts 145 hours. NO begins to appear after 28 hours, and reaches the penetration time (when NO concentration is 37 ppm), which lasts 300 hours. The penetration data measured by the instrument and the penetration time calculated show that the absorption of SO2 is 76.14g, the sulfur capacity is 38.07%, the absorption of NO is 37.81g and the nitrate capacity is 18.9%.

Supercarbon Material-Sludge-based Supercarbon Material (CTDD-2)

Introduction of Sludge-based Supercarbon Material (CTDD-2)

Supercarbon for desulfurization and denitrification is a kind of sludge+biomass-based activated carbon, which is made of municipal or industrial sludge rich in organic matter and rice straw. The production process is to dry sludge, add rice straw biomass granules, active additives, appropriate amount of binder extrusion, carbonization and activation. Compared with ordinary activated carbon, it can be specially used to treat power plants, steel plants and stone. The flue gas discharged from petrochemical and coking industries can simultaneously remove SO2 and NOX without ammonia spraying. The effect of flue gas purification and use is better than that of traditional activated carbon.

Characteristics of Sludge-based Supercarbon Materials

The production of special sludge for desulfurization and denitrification plus biomass-based supercarbon is different from that of ordinary coal-based columnar activated carbon. The special supercarbon for desulfurization and denitrification has higher sulfur and nitrate capacity, better strength, more outstanding features of extrusion resistance, wear resistance and impact resistance. Its specific surface area is slightly lower than that of traditional activated carbon, but its pore is especially developed, its adsorption performance is stronger, and it can reduce the number of cycles and reduce the volume of equipment. It can optimize the system configuration, reduce construction investment, reduce the number of material recycling, lower workload in analytical section, more convenient operation and lower maintenance cost.

Indicators of Sludge-based Supercarbon Materials

project

index

Iodine value  mg/g

350~450

specific surface area  m2/g

200~450

ash content

≤16%

Volatile Compounds

≤2%

PH

11~12.5

Penetrating sulfur capacity (mg/g)

≥60

Breakthrough nitriding capacity (mg/g)

≥30

density  (g/L)

550~650

Wear resistance

≥98%

Compressive strength  da/Na

40

Water content

≤3%

Ignition point

≥620℃

Specifications(mm)

5~10

Application of Sludge-based Supercarbon Material

The special sludge for desulfurization and denitrification plus biomass-based super-carbon has good removal effects on non-ferrous metal smelting tail gas, sintering pellet tail gas, coal-fired power plant flue gas, heating furnace, gas generator, coke oven, municipal refuse incineration flue gas and coal-fired flue gas, oil-fired flue gas and industrial tail gas, such as sulfur dioxide, nitrogen oxides, hydrogen sulfide, etc. It is used as filter material for personal protective equipment to protect sulfur dioxide and nitrogen oxides.            

The special sludge for desulfurization and denitrification plus biomass-based supercarbon can be desulfurized and denitrified at the same time after adding ammonia water from the initial stage. It has gone through a process of technological tackling key problems. Based on this, a series of technological improvements have been made on the "special sludge for desulfurization and denitrification + biomass-based supercarbon" developed in the medium crystal environment, and the process of spraying ammonia water has been cancelled, which is a qualitative flight. Users who need useful acid can choose to prepare sulfuric acid or sulfur after analysis. For customers who do not need acid, they can choose additives used as fillers or cementitious agents for building materials after grinding directly. A material recycling system of "resource recycling" has been established, which not only protects the environment, but also increases the side effects of customers. Product income, I believe that in the future development, all-round and multi-functional super-carbon will continue to be developed by us, so that our environment is cleaner and cleaner, and the air is cleaner and fresher.

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