Benchmark Case | Strategic Cooperation with COFCO: HUILIN Nitrogen Generators Empower Green, Intelligent and Long Term Grain Storage

As a leading grain, oil and food enterprise, COFCO Group’s large‑scale grain storage bases serve as core hubs for safeguarding national food security. Long‑term grain preservation with low loss, environmental friendliness and safety constitutes a key performance indicator for COFCO’s warehousing and storage system.

Conventional grain storage has long relied on chemical fumigation for insect and mildew control, which commonly brings about pain points such as pesticide residues, deteriorated grain quality, high storage losses and poor environmental performance. Meanwhile, grain natural respiration, mildew growth and pest infestation can easily accelerate grain ageing and shorten the storage cycle. Against this backdrop, COFCO Group has comprehensively advanced the upgrading of its warehousing system. It adopts nitrogen‑modified‑atmosphere grain storage technology to replace traditional processes, introduces professional nitrogen‑making equipment in batches, and builds a modern grain storage system featuring intelligence, chemical‑free operation and long‑term storage capability.

Large‑scale grain storage imposes stringent industrial standards on the stability, precision and sustained performance of nitrogen‑making equipment. Drawing on its technical accumulation in the air separation equipment sector, mature grain‑storage‑specific nitrogen generation solutions and abundant experience in large‑scale project delivery, Guangzhou HUILIN Air Separation Equipment Co., Ltd. has been selected as a supplier for COFCO Group, providing customized grain‑storage‑special nitrogen generators for its grain warehouses across the country.

Tailored to the special operating conditions of grain storage, HUILIN Air Separation leverages proven pressure‑swing‑adsorption (PSA) nitrogen‑making technology to develop highly stable, high‑purity and low‑energy‑consumption nitrogen generation solutions exclusively for grain storage. The solutions can precisely control the oxygen concentration inside silos below 2%, creating a dedicated low‑oxygen dormancy storage environment for grains, which fully complies with technical specifications for green grain storage. Boasting core competitive strengths, HUILIN’s grain‑storage nitrogen generators fully satisfy COFCO’s high‑standard storage requirements:

• Round‑the‑clock stable operation to meet rigid storage demands: Equipped with premium core components, the equipment delivers robust and reliable overall performance. It supports 7×24‑hour non‑stop continuous operation with infrequent shutdowns or malfunctions, perfectly adapting to year‑round regular nitrogen‑filling grain storage in silos and ensuring stable operation of the whole storage system.
• High‑purity nitrogen for chemical‑free grain storage with safety and zero pollution: It maintains stable nitrogen purity and even air output, which rapidly displaces oxygen inside silos to completely inhibit mildew and pest breeding. No chemical agents are required, genuinely realizing residue‑free, eco‑friendly and safe grain storage to preserve grain and oil quality.
• Freshness retention and loss reduction for extended storage cycles: The low‑oxygen inert storage environment effectively slows grain oxidation and ageing, fully retaining the original flavour and nutrition of grains. It greatly prolongs grain storage life and brings grain storage losses down to an extremely low industry level, achieving quality improvement and efficiency gains.

At present, HUILIN nitrogen generators are operating smoothly with outstanding grain‑storage performance, serving as core supporting equipment for COFCO’s green and intelligent warehousing system. This in‑depth strategic cooperation fully validates the professionalism, stability and reliability of HUILIN nitrogen generators in the grain storage sector. Going forward, HUILIN will continue to deepen R&D in air separation technology, iteratively optimize nitrogen‑making equipment dedicated to grain storage, deliver better customized solutions for grain and oil storage enterprises worldwide, facilitate the green and intelligent transformation of the grain storage industry, and contribute to food security.