Technology for continuous heat treatment of bulk material

The French company REVTECH Process Systems has developed and successfully launched a new REVolutionary TECHnology for continuous heat treatment of bulk solid, free flowing powdered, granulated, and small-sized materials. This modern technology is characterized by gentle processing of raw materials, economical and environmentally friendly operation, easy cleaning and maintenance. Further advantages of this technology are: the possibility to work precisely controlled in a wide temperature range from 50 ° C to 800 ° C, in a continuous process with residence times from a few minutes to a few hours and outputs of 200 - 5,000 kg / h. The danger of a dust explosion or a fire outbreak is largely completely eliminated by the unique design. The REVTECH technology is based on a spirally stainless-steel spiral tube mounted on a frame. The tube is heated by means of electrical resistance to the required temperature. At the bottom part of the frame, two vibration motors are applied. The entire system stands on flexible rubber compensators and is firmly anchored in the ground by means of screws. The motors subject the entire system to directed vibrations. The treated material is moved by the vibrations inside the tube from bottom to top and it is treated at the same time.

This innovative technology is sucessfully used in the food, feed, agricultural, chemical and other industrial areas. 

Continuous heat treatment - drying, roasting and pasteurising of:

Nuts - hazelnuts, walnuts, cashew nuts, macadamia, para- and pecans, peanuts, almonds, pistachios, with or without shell, whole or sliced

Kernels - pumpkin seeds, sunflower seeds, pine nuts

Grains and flakes - cereals, buckwheat, amaranth, corn, millet, malt

Seeds - flax seeds, sesame seeds, hemp seeds

Beans - soy, cocoa, coffee, legumes

Advantages: uniform roasting in the wide range of taste and colour shades, gentle treatment without mechanical action, high microbiological purity, low energy consumption, low gas emissions, easy product change and cleaning

Continuous heat treatment - drying, toasting and roasting of:

various extrudates, small biscuits pieces, breadcrumbs, crumbles and premixes for bakery fillings

Continuous hydrothermal treatment - for microbiological reduction of spices, dried herbs and medicinal herbs, teas and tea blends including fruit teas by combined treatment with heat and steam. The steam is dosed in small quantities, so that the effect mainly on the surface of the product happens. It does not diffuse any vapor into the product nor does it condense on its surface, and it does not affect the sensory properties of the materials. Unique technology with high efficiency, gentle treatment with low energy consumption and less cleaning effort. 

Continuous hydrothermal treatment - of poppy seeds to stabilize against enzyme-induced oxidation processes. Unique technology for reduction of morphine content in poppy seeds and stabilization in one step. 

Continuous heat treatment - toasting and roasting of cereal seeds, flours, beans and lupines, various milling fractions, germs, hulls, proteins, hulls and fibres or seedlings with the aim:

- To stabilize them by inactivating enzymes

- To reduce the microbiological contamination

- To optimize their rheological properties by physical modification of the starch fraction (recrystallization) or of the proteins (denaturation)

Continuous heat treatment - intensive roasting of cereal flours to set various shades of toasted flavour and roast colour for use as colouring and flavouring foods. 

Stabilization of oilseeds and beans

by thermal inactivation of enzymes

- Oilseeds (sunflower, pumpkin, flax, sesame, poppy, pines and others)

- beans (soy, chickpeas, cocoa and others)

- nuts (walnuts, hazelnuts, cashews, pistachios and others)

- Wheat germ (wheat, corn and others) have a high oil content with a high content of unsaturated fatty acids. These are susceptible to enzymatic degradation and subsequent oxidation by atmospheric oxygen. This in turn leads to unpleasant taste and smell of stale oil. By heat treatment, often combined with a small amount of steam, the enzymes are inactivated and the shelf life and sensory quality of the products is prolonged without significantly altering the taste and odour.

Innovative and highly effective technology for reducing morphine in poppy

The content of morphine in blue poppy is a standard strictly followed by the criterion for the use of poppy seeds for food purposes. Poppy with a higher morphine content in poppy seeds carries microscopic dust particles from the plant straw, which gives it a higher morphine content than allowed by the standard. The only option is to remove these fine dust particles in an effective manner that does not affect poppy sensory properties and does not require special approval for handling narcotic drugs. Our technology can lower poppy morphine content below 10 mg / kg raw material (10 ppm). The removed morphine is neither concentrated nor captured and no special operating permits are required.

Continuous physical reactor for the modification of starches in a dry process with the aim of optimizing their application properties, in particular for use in clean label and organic products. Especially suitable for the known alkaline catalysed roasting processes and also for the production of resistant starch and dextrin of any kind.

Continuous chemical reactor - for carrying out chemical modifications to starches in a dry process. Long reaction times, narrow reactor space, precise temperature control, continuous material movement and mixing and long residence times offer new potential for dry reactions of starch and other polysaccharides.

Continuous reactor for various processes on bulk solids:

Calcination - Metal oxides, silicic acid compounds, bentonites, pharmaceutical waste

Sintering - metal oxides, zeolite

Thermal desorption - catalysts, contaminated soil, foundry sands, synth. Rubber, cork, gas-solid reactions - catalyst activation, regeneration, preparation

Ultra-drying - H2O <0.1% - alumina, zeolite and other molecular sieves, glass microspheres, corrosive powders

Pyrolysis - wood, agricultural waste

Preheating - sodium chlorate, drying - sand, PET, clay, plastic granules

Crystallization - plastics and products from the same, sterilization - pharmaceutical products 

Roasting oak wood and other wood chips - modern, continuous and ecological production of roasted oak chips as well as other wood chips that can be used to process wines, spirits, liqueurs, beer and the like.

Pyrolysis of organic materials - production of biochar

- Continuous process of pyrolysis of organic materials

Are you looking for an innovative, economical and environmentally friendly technology for drying, roasting, pasteurizing or heat/moisture treatment for your processing or production process?

Contact us!

We support you by information and design a tailor-made solution for you.