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Gasification of densified textiles and solid fossil fuels to produce organic compounds

A technology of organic compounds and fossil fuels, which is applied in the preparation of organic compounds, organic chemistry, hydrogen/synthesis gas production, etc., and can solve the problems of slurry instability, destruction of precision balance, and too viscous

Pending Publication Date: 2021-11-12
EASTMAN CHEM CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For economic reasons, coal / water slurries are as concentrated as possible to the edge of pumpability, so the introduction of any co-feed may upset the delicate balance and cause the slurry to be unstable (solids settling), too viscous, two-phased or Also not suitable for safe, reliable and economical feeding to the gasifier
For example, many plastics and textiles will float, or phase separate, or agglomerate and disrupt the uniformity of the slurry

Method used

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  • Gasification of densified textiles and solid fossil fuels to produce organic compounds
  • Gasification of densified textiles and solid fossil fuels to produce organic compounds
  • Gasification of densified textiles and solid fossil fuels to produce organic compounds

Examples

Experimental program
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Effect test

example 1

[0557] Various coal slurries were prepared and tested for stability and viscosity. The reported samples were processed by agglomerators, extruders or melt presses. The material from the agglomerator and extruder was then further ground to a size <1 mm. Thin materials with a width of 1 mm or less coming out of the melting press are brittle and are processed directly through the rod mill along with the coal. The rod mill successfully crushed the particles to a satisfactory size. PET-cotton blends can be of varying ratios, but about 25-35% cotton is expected. Spandex blends can be varied, but are expected to be up to 15% spandex.

[0558] The coal was dried and crushed in a Retsch jaw crusher to a nominal size 1 / 4 ” x 9” stainless steel rod. The slurry was milled at about 28 rpm (mill outer diameter = 11.75 inches) for 1 hour. When the slurry was mixed by overhead mixer, the pH was adjusted to 8 ± 0.2 again using ammonia water. Each batch of slurry was made to a total of...

example 2

[0563] Various coal slurries were tested with densified and ground textiles using different coal sources following the procedure in Example 1. The control viscosity at the same ALS loading was much higher than that of the coal source in Example 1. An important comparison is that of the control viscosity versus the textile containing the tack. A good slurry has a viscosity similar to or lower than the control with the closest amount of ALS.

[0564] The results are reported in Table 2. Each #1 in Table 2 is a primary slurry. ALS was added to Primary Slurry #1 in such an amount that the total ALS reported in Table 2 was #2-4. ALS is added after rod mill processing to reduce viscosity.

[0565] Table 2

[0566]

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Abstract

Densified textile aggregates are co-fed with a fuel into a partial oxidation gasifier. High solids concentrations in the feedstock composition can be obtained without significant impact on the feedstock composition stability and pumpability. A consistent quality of syngas can be continuously produced, including generation of carbon dioxide and a carbon monoxide / hydrogen ratio while stably operating the gasifier and avoiding the high tar generation of fluidized bed or fixed bed waste gasifiers and without impacting the operations of the gasifier. The syngas quality, composition, and throughput are suitable for produce a wide range of chemicals.

Description

Background technique [0001] There are well-known global problems in waste disposal, especially with regard to a large number of consumer products, such as reduced textiles, textiles, textiles and other polymers, which are not considered to biodegrade within acceptable time limits. There is a public desire to introduce these types of waste into new products by recycling, reusing or otherwise reducing the amount of waste in circulation or in landfills. [0002] Various methods have been proposed for recycling, reusing or reducing waste such as biomass, solid municipal waste and paper, including gasification of these wastes. Among these proposals, waste gasifiers have been proposed or used, which are generally air-supplied fluidized bed gasifiers, which can readily accept various component sizes and mixed feedstock types. Such waste gasifiers are generally operated at low to moderate temperatures in the range of 500°C to 1000°C using air as the oxidant, at lower operating temper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/36C10J3/72
CPCC01B3/36C01B2203/025C01B2203/1205C01B2203/061C01B2203/062C01B2203/063C10J3/485C10J3/466C10J3/84C10J3/506C10J2300/093C10J2300/0906C10J2300/0916C10J2300/0946C10J2300/0959C10J2300/169C10J2300/1615C10K1/101C10J2300/1665C10J2300/1656Y02P20/582C07C29/1518
Inventor 威廉·刘易斯·特拉普贾斯廷·威廉·墨菲内森·米切尔·瓦斯特
Owner EASTMAN CHEM CO
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