Agricultural Incinerators

An agricultural incinerator is a dual-chamber batch unit specified for farm waste that cannot be spread, composted, fed or collected. The primary chamber runs at 850–1,200°C under starved-air conditions; the secondary chamber holds the resulting flue gas above 850°C for two full seconds. That second chamber is the whole difference between an incinerator and a bonfire, and it is what a permit is written against. The material that ends up here is a small fraction of what a farm produces, and that is the honest framing. Straw is baled, muck is spread, silage wrap is collected, timber is chipped. Incineration is for the loads where those routes are closed: a crop under a plant health notice, knotweed arisings that become controlled waste the moment they are cut, a mortality event at a fish farm, grain condemned on mycotoxin, bedding out of a building under movement restriction. Two things make these loads awkward and they are not the same thing. Some are awkward because moving them is what spreads the problem — pathogens, spores, viable rhizome, notifiable disease. Others are awkward because nobody will take them: a condemned load has no onward market and a haulier needs a description before they will lift it. On-site destruction answers both, because the material stops existing on the holding that produced it. AgriBurn units are top-loading and batch-rated at 350, 450 and 500 kg per charge, burning at under 50 kg/h. Top loading matters more on a farm than anywhere else: brash, root balls, baled residue and tangled bedding go in from above with a loader in the shape they arrive in, rather than being cut down to fit a front door. Volume, not weight, is usually what fills the chamber.

Yes. Running an incinerator needs an environmental permit from the Environment Agency, SEPA or NIEA, and that applies to a farm burning its own arisings as much as to a commercial operator. Where the charge contains animal by-products — manure-contaminated bedding, fallen stock, fish mortalities — the plant also needs APHA approval under the retained ABP Regulation.

Because an open fire cannot hold 850°C for two seconds, and that condition is what destroys pathogens, spores and viable rhizome instead of lofting them over the boundary. Open burning of crop residue is separately restricted by regulation, and where a plant health notice requires destruction, it will normally be satisfied by a permitted incinerator and not by a field fire.

Size on the volume you have to clear per cycle, not on an hourly rate. These are batch units burning at under 50 kg/h, so a full charge is a complete cycle of roughly eight to eleven hours across the three models, which take 350, 450 and 500 kg per charge. Divide your standing volume by the capacity to get the number of charges, and allow a day per charge.

Often not — the chamber fills first. The AGBI-350 chamber is 0.48 m³, the AGBI-450 is 0.76 m³ and the AGBI-500 is 1.19 m³. Baled straw at roughly 120 kg/m³ reaches the top of an AGBI-500 at around 140 kg, well under its 500 kg rating, whereas grain at roughly 750 kg/m³ hits the weight limit with the chamber part-full. Size on whichever limit your material reaches first.

Yes, and it is the normal case on a farm. Green vegetation, fresh bedding and fish waste spend the first part of the cycle driving off moisture before they burn, which shows up as fuel consumption and cycle time rather than as a failed burn. Where material can be stood and drained first, it burns cheaper.

Mineral ash at 3–5% of input mass, sterile, with no viable seed, rhizome, spore or pathogen. It is still waste and still needs a transfer note if it leaves the holding, but it is inert residue rather than a controlled material.

Yes. Crop residue, invasive vegetation, bedding, notified timber and condemned feed all destroy at the same condition, so one permitted AgriBurn covers all six. What changes between them is the operating procedure, the waste codes on the permit, and whether APHA approval is also required for the loads carrying animal by-products.

Preservative-treated timber (creosote, CCA), agrochemical containers and pesticide residues, silage wrap and farm plastics, pressurised containers, batteries, asbestos sheeting from farm buildings, and any load whose route is a collection scheme rather than destruction. Each has its own reason, and each is listed on the relevant sub-sector page.