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Coke slurry fuel composition and method of making the same

a technology of coke slurry and fuel composition, which is applied in the direction of solid fuels, liquid carbonaceous fuels, fuel additives, etc., can solve the problems of taiwan's landfills being exhausted soon, sewage sludge production has serious impact on humans and the environment in which we live, and the world is facing serious energy shortages, so as to increase the shortage of global energy resources and save energy

Inactive Publication Date: 2016-05-12
SUNMAX MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The purpose of this patent is to provide a fuel composition made from coke and sludge, which can reduce the amount of harmful substances in sludges and save energy. The composition can be used as a replacement for conventional solid fuels and reduces the amount of sludge produced and its disposal cost. It also contains a specific additive that reduces sulfur dioxide production, while the quality and purity of the petroleum coke can be maintained without desulfurization. Overall, the technical effect of this patent is to provide a sustainable and cost-effective solution for reducing harmful substances in sludges and saving energy in urban sewer systems.

Problems solved by technology

With the quick development of society and economies in modern society, the world is facing serious shortages of energy.
The sewage sludge production has caused serious impact on the humans and the environment in which we are living.
Taiwan's landfills will be exhausted soon.
However, due to its very high water content, biological sludge cannot be used for direct co-firing with solid fuel.
Biological sludge disposal is a growing worldwide problem.
Biogas can be produced from biological sludge in a landfill, thus polluting the ground water.
The organic fertilizer or soil amendment product made from biological sludge is a risk to human and environmental health because biological sludge contains harmful substances such as pathogenic bacteria, heavy metals, and carcinogenic compounds.
Further, the disposal method of incineration cannot achieve high thermal efficiency due to energy balance problems.
Besides, the lightweight aggregate made from biological sludge cannot meet the market requirements due to the higher production cost and technology.
However, methane gas (CH4) and toxic hydrogen sulfide gas (H2SO4) can be produced in the biological digestion process, and the methane gas will react with the hydrogen sulfide gas to form sulfuric acid when combustion occurs.

Method used

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  • Coke slurry fuel composition and method of making the same
  • Coke slurry fuel composition and method of making the same

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

The First Embodiment

[0025]Please refer to FIG. 1, a method of making coke slurry fuel composition in accordance with a first preferred embodiment is provided. The method comprises the steps of: providing petroleum coke pellets and biological sludges (S100); feeding a cluster of petroleum coke pellets into a slurry of biological sludge in a predetermined ratio according to a desired calorific value to form a fuel precursor, and then agitating and grinding the fuel precursor simultaneously to form a petroleum coke-based fuel slurry (S102); and screening the petroleum coke-based fuel slurry (S104).

[0026]Step S100 is to provide petroleum coke pellets and biological sludges. The petroleum coke pellets can comprise a combination of more than one type of solid coke product, i.e., needle coke, sponge coke, spherical coke and shot coke. The biological sludges can be derived from domestic sewage, industrial sewage, animal sewage, municipal sewage, or the combination thereof. The biological sl...

second embodiment

The Second Embodiment

[0032]Please refer to FIG. 2, a method of making coke slurry fuel composition in accordance with a second preferred embodiment is provided. The method comprises the steps of: providing petroleum coke pellets and biological sludges (S200); dry-grinding the petroleum coke pellets into particles and wet-grinding a slurry of the biological sludges into a fine organic-rich slurry, and then screening the petroleum coke particles (S202); feeding and mixing a cluster of the screened petroleum coke particles with the fine organic-rich slurry in a predetermined ratio according to a desired calorific value to form a petroleum coke-based fuel slurry (S204); and screening the petroleum coke-based fuel slurry (S206).

[0033]Step S200 is to provide petroleum coke pellets and biological sludges. Similarly, the petroleum coke pellets can comprise a combination of more than one type of solid coke product, i.e., needle coke, sponge coke, spherical coke and shot coke, where the shape...

third embodiment

The Third Embodiment

[0039]Please refer to FIG. 3, a method of making coke slurry fuel composition in accordance with a third preferred embodiment is provided. The method comprises the steps of: providing petroleum coke pellets and biological sludges (S300); wet-grinding the petroleum coke pellets to form a water slurry of petroleum coke and wet-grinding a slurry of the biological sludges into a fine organic-rich slurry, and then screening the water slurry of petroleum coke and the fine organic-rich slurry (S302); and feeding and mixing the screened water slurry of petroleum coke with the screened fine organic-rich slurry in a predetermined ratio according to a desired calorific value to form a petroleum coke-based fuel slurry (S304).

[0040]Step S300 is to provide petroleum coke pellets and biological sludges. Similarly, the petroleum coke pellets can comprise a combination of more than one type of solid coke product, i.e., needle coke, sponge coke, spherical coke and shot coke, where...

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PUM

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Abstract

A coke slurry fuel composition of the instant disclosure comprises 40-80 percentage by weight of petroleum coke (dry basis), 20-60 percentage by weight of biological sludge (wet basis), and 1-4 percentage by weight of basic additive. Accordingly, the coke slurry fuel composition with high combustion efficiency can be adapted to reduce emissions of toxic or air pollutants, and the purpose of sludge reduction can also be achieved. A method of making coke slurry fuel composition is further provided.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The instant disclosure relates to fuel technologies; in particular, to a coke slurry fuel composition and method of making the same.[0003]2. Description of Related Art[0004]With the quick development of society and economies in modern society, the world is facing serious shortages of energy. According to statistics, the world oil reserves are, if current consumption levels continue, expected to exhaust within 50 years. The world's total proved coal reserves are expected to exhaust within 100 years. The countries of the world are finding and developing alternative energy. For this reason people start looking for renewable energy.[0005]Petroleum coke (often abbreviated pet coke or petcoke) is a by-product of the oil refining process, resulted from the thermal processing of residual oil, which has been cracked or otherwise processed to remove low boiling fractions. Petroleum coke is a carbon-based material composed of crys...

Claims

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Application Information

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IPC IPC(8): C10L10/02C10L1/12
CPCC10L10/02C10L1/12C10L1/1208C10L1/1241C10L1/1233C10L2290/546C10L1/1283C10L2200/0469C10L2290/24C10L2290/28C10L1/1291C10L1/324C10L1/326
Inventor HAN, CHIA-CHIHHSU, HUAN-CHUNGTSAY, YAW-CHEH
Owner SUNMAX MATERIALS CO LTD
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