CZ277773B6 - Plant for treating waste of a slaughterhouse - Google Patents

Abstract

This solution is based on the principle closed to two branches working simultaneously or as the independent components being used for vast blood and creatine processing. The branch designed for blood processing purposes consists of the compensation blood reservoir (5) and the dryer (1) based on the plates, where a feeder (2) of the crumbled vegetable carrier. The branch used for creatine processing approvals consists of the destructive homogenizer (6), hydrolyser (10), container for hydrolyzate (12) and the plate dryer (1) or the fat separator (14), respectively.

Description

(57)

The essence of the solution is two independent or simultaneously working branches for waste blood processing and keratin processing. The blood processing branch consists of a compensating blood reservoir (5) and a plate dryer (1) with an attached dispenser (2) of the crushed plant carrier. The keratin processing branch consists of a destructive homogenizer (6), a hydrolizer (10), a hydrolyzate container (12) and a plate dryer (1), respectively. a fat separator (14).

CZ 277 773 B6

in

The present invention relates to a slaughterhouse waste treatment plant which solves the recovery of nutritional and protein waste.

The blood obtained in slaughtering animals is an extremely important source of amino acids and other substances for nutritional use. A small portion of fresh animal blood that is used as food is usually kept frozen for a short time. For long-term storage of blood for human and nutritional use, dehydration is carried out to a moisture content of 6 to 12%, and can be chemically preserved or sterilized prior to storage. The most widespread dehydration of blood is spray drying, drum drying, surface drying and contact drying machines

In spray dryers, blood is dried without fractionation, or after separation into blood particles and blood plasma, usually by heating the air at 300 ° C, for nutritional use (Masters K .: Spray Dryns, Principles of Operational Practice and Applications, Leonard Hill Book) , London an Intertex Publishers, 1972). The disadvantages of spray driers are high technological costs and high demands on blood purity during the actual drying. A certain disadvantage is also the high dustiness of the product.

A large group is made up of cylindrical dryers, which provide a flake product, also called blood meal. Its disadvantage is that the resulting product needs to be treated to a structure that allows it to be applied to the feed substrate.

Blood drying is also carried out in developed surface dryers (Combal Trockner), in which the drying is carried out in countercurrent heated air on balls of polymeric materials with a diameter of 18 mm, for example polycarbonate for an amount of evaporated water up to 2000 kg / h.

For coagulated blood, a continuous continuous contact dryer, called SOLIDAIR (Buttner - Schilde - Hass AG), is recommended.

These devices are complex and cannot be used for the drying of blood containing solids, which the slaughter blood contains.

When the blood is dried in drum and ring driers, the blood must be at the inlet of the solid-state dryer to obtain an aggregate condition that provides a large developed surface for contact of the dried material with the drying gas. The solid may be a nutritional material that sucks blood. In many cases, this method is not suitable for the preparation of compound feed due to the degradation of the solid as a nutritional carrier.

The recovery of keratin slaughter waste is a global problem because, on the one hand, it is a high-value nutritional and protein product, and on the other hand, its disposal is very environmentally damaging. Only a small part of keratin waste is recovered by rendering.

There is known a device for treating a portion of keratin, in particular a machine glue, consisting of a disintegrator, a deodorizer and a jet dryer, but which does not show satisfactory results. Not to mention that it can't process hard keratin like corners, bones and hooves. Only individual establishments are known which merely separate these slaughter products, e.g. a disintegrator, a hydrolizer, and also vacuum dryers in which the mechanically separated keratins are dried to the necessary moisture and enriched with additional nutritional and vitaminous ones. substances.

The disadvantage of these devices is that they process keratins incompletely and discontinuously, which leads to significant energy losses and incomplete processing of the feedstock, as the resulting product loses nutritional value by non-continuous processing. The disadvantage is also low efficiency, high labor and time consuming processing.

According to MORANA (1972), keratins can be processed by the courts using hot steam. The first method is manually controlled in a cylindrical brewing unit in a batch mode of 45 min. and a pressure of 45 p.s.i. The second method is more expensive. In a continuous manner, keratins are washed, hydrolyzed for three minutes at 100 p.s.i.

The aforementioned drawbacks are eliminated by a two-branch slaughtering waste treatment plant according to the invention, wherein the blood waste treatment branch consists of at least one plate dryer provided with a crushed plant carrier dispenser, at an inlet connected to the blood supply via gravity or discharge piping. with a compensatory blood reservoir inserted. The keratin processing branch consists of a destruction homogenizer by a hopper connected by a keratin conveyor and an outlet, through the discharge line of the homogenate with the hydrolizer, which is connected via a conduit to the hydrolyzate container, the hydrolyzate container discharging into the hydrolyzate sampling line and / or connected to a disk dryer. Alternatively, a fat separator is attached to the hydrolyzate container.

The advantages of the slaughterhouse waste treatment plant according to the invention are particularly evident in the prevention of odorous landfills and their decomposition, which has a direct impact on the environment, in particular groundwater contamination. The high technological continuity in comparison with the existing devices eliminates the thermal decomposition of the waste and thus the degradation of essential amino acids. The variability of the device makes it possible to obtain several final products individually or simultaneously, such as pure dried blood, dried blood-based feed and plant carrier, hydrolyzate for direct feeding, premix, pure animal fats, all of a high nutritional value. The plate dryer allows direct drying of liquid blood with various plant carriers in the desired free-flowing or granular form.

The key elements of the plant, which are the destructive homogenizer and the hydrolizer, make it possible to process both soft and hard slaughter waste into final products, which makes the plant a universal technology for all meat processing poultry plants and rendering plants.

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In the accompanying drawing, an exemplary assembly of a slaughterhouse treatment plant is shown. is a basic arrangement of the device in a schematic representation. .

The slaughterhouse waste treatment plant consists of two winds. The waste blood processing branch consists of a plate dryer χ with a barley meal dispenser 2 attached thereto, which is connected to the blood supply χ via a discharge line X with an inserted compensating blood reservoir 5. A pump 15 is arranged in the discharge line 4, between the compensating blood reservoir 5 and the plate dryer X.

The keratin processing branch consists of a destructive homogenizer 6, above which a conveyor 8 of keratin with an inlet 20 of keratin in the form of a slip is arranged above the hopper 7. The outlet of the destruction homogenizer 6 is via a conveying line 9 with a sludge pump 16 connected to the inlet of the hydrolizer 10. The hydrolizer 10 is connected via a line 11 to the hydrolysis tank 12, from which the sampling line 13 and the transport connection 17 .

The apparatus assembly allows the operation of each branch alone, or the two branches can operate simultaneously upon inclusion of the second plate dryer χ, while the compensating blood reservoir 5 in the blood processing branch and the hydrolyzate reservoir 12 in the keratin processing branch allow the apparatus to operate in storage mode t. j. even if there is no continuous supply of slaughter waste.

In the treatment of blood waste, blood is dispensed directly into the mixer 18 of the crushed vegetable carrier dispenser 2 from where the mixture of the two components is dispensed into a plate dryer χ. The dried concentrate is packed directly into the consumer packaging at the outlet of the X-shaped dryer.

The input element of the keratin processing branch is a destructive homogenizer 6, where the knife segments 19 rotating at high speed crush and homogenise the dosed keratin to a pulp or paste mass. These are conveyed by a sludge pump 16 through a conveying line 9 to a hydrolyzer 10, where by the action of high pressure steam, biological destruction and sterilization of the mass and release of bound proteins occur. The resulting hydrolyzate is stored in the hydrolyzate container 12, from where it is taken as required by the consumer through sampling line 13 for direct feeding or is dried on a plate dryer χ and distributed in the form of premixes. An alternative to the device is a fat separator 14, whereby animal fats are obtained from the hydrolyzate either as a feed component or as an industrial semi-finished product.

The slaughterhouse treatment plant is advantageously applicable in meat-processing, poultry, tanneries and rendering plants.

Claims (2)

PATENT CLAIMS A slaughter waste treatment plant comprising a feed waste treatment layer and a keratin treatment branch of all kinds, characterized in that the blood waste treatment branch consists of at least one plate dryer (1) provided with a crushed vegetable carrier dispenser (2), at an inlet connected to the blood supply (3) via a gravity or delivery line (4) with a compensating blood reservoir (5) inserted, and the keratin processing branch consists of a destruction homogenizer (6), a hopper (7) connected via a conveyor (8) with the inlet (20) of keratin and with the outlet through the conveying line (9) of the homogenate with the hydrolyzer (10), which is connected via a line (11) to the hydrolyzate container (12), the hydrolyzate container (12) or connected to a plate dryer (1). 2. The slaughter waste treatment plant according to claim 1, characterized in that a fat separator (14) is connected to the hydrolyzate container (12).