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A method for separation of heterogeneous products, including household waste

A waste and article technology, applied in the field of separation of mixed articles, can solve the problem of not providing additional costs for water treatment, and achieve the effect of improving energy efficiency and reducing incineration costs

Inactive Publication Date: 2008-01-23
HOLM CHRISTENSEN BIOSYSTEMER APS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0027] None of the known wet centralized separation methods can compete with the incineration of unsorted household waste. One reason is that they can only separate a maximum of three fractions with one separation vessel. They do not provide enough added value to justify the water The extra cost of processing is worth it

Method used

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  • A method for separation of heterogeneous products, including household waste
  • A method for separation of heterogeneous products, including household waste

Examples

Experimental program
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Effect test

Embodiment Construction

[0066] figure 1

[0067] If the miscellaneous items or some of them are contained in a bag or bag, they should preferably be released without causing damage to component 1 . Then, on the conveyor 2 a smooth flow of items is produced. The miscellaneous items are poured into the separation container 3, and liquid flows in the separation container 3. The articles fall into the feed zone 4, where all components are subjected to a force P1 in direction D1 generated by the liquid flow.

[0068] The components F0, which are subjected to a greater force of gravity than buoyancy, sink to a collection area directly below or near the feed zone 4, where they are withdrawn by known means.

[0069] Some components (F3-F5) floated, some of which were above the surface. Here, this part of the composition is acted upon by a force P2 in direction D2.

[0070] In Figure 1, P2 is provided by an air stream or a liquid jet.

[0071] figure 2

[0072] Simultaneously providing a force P1 in the...

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Abstract

A method for separation of heterogeneous products included in household waste (HW) comprises separating the products in a fractionation vessel containing a liquid. The waste includes components, of which at least some are capable of floating in the liquid. The components are exposed to a first essentially horizontal force (P1) in a first direction (D1) enforced by a flow of the liquid in the fractionation vessel and to a second essentially horizontal force (P2) in a second direction (D2), which is substantially different from the first direction (D1). The combined impact of the forces (P1; P2) on the components spreads the components and leads them to at least two collection areas. Products of varying buoyancy may thus be treated separately.

Description

technical field [0001] The present invention relates to methods and apparatus for the separation of miscellaneous goods comprising several components at least some of which will float when transferred into a liquid. The method has the ability to separate miscellaneous goods into different fractions, in particular to separate the floating fraction into at least two fractions in one separation vessel. An example of miscellaneous goods is household waste (HW), which contains so many components with different properties that it can be separated into up to 5-10 fractions in one separation container. The largest portion of household waste is usually Biomass waste, which includes food scraps, paper, cardboard, etc., and contains a major portion of the energy in household waste. Another important energy containing fraction is plastics and other organic polymers, which can be sorted out and recycled according to a preferred embodiment of the present invention. Household waste refers ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B5/40B03B9/06B03B11/00
CPCB03B9/06B03B5/40B03B2005/405B03B11/00Y10S209/93Y02W30/52
Inventor B·H·克里斯滕森L·H·克里斯滕森
Owner HOLM CHRISTENSEN BIOSYSTEMER APS
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