Relying on proprietary core HCNG hydrogen‑blending combustion technology certified under the national‑level scientific‑and‑technological achievement appraisal by the National Energy Administration, Tianhuan Hydrogen Source has recently completed turnkey delivery of multiple hydrogen‑blending retrofit projects for boilers and natural‑gas‑fired internal combustion engines serving ceramics, chemical‑fertilizer and oil‑field enterprises. The full set of electronic‑control software and hardware is entirely self‑developed, eliminating reliance on imported overseas controllers, and providing low‑cost, easy‑to‑implement decarbonization retrofit solutions for domestic high‑energy‑consumption industrial enterprises.
With years of in‑depth research on hydrogen‑blending combustion mechanisms, the company has built a complete combustion‑kinetics simulation database. More than ten‑thousand sets of working‑condition tests have verified the optimal stable hydrogen‑blending ratio of 20 vol%. After hydrogen blending, the lean‑burn limit of gas mixture is widened from 1.7 to 2.4, and the high‑thermal‑efficiency air‑fuel‑ratio range is expanded accordingly. Multiple emission‑reduction and efficiency‑improvement benefits are achieved without modifying the core structures of boilers or internal‑combustion‑engine main bodies. Under China‑VI cycle conditions for the WP6 model, actual measurement shows NOₓ emissions are cut by over 50 %, methane slip is reduced by 16%‑44 %, comprehensive fuel consumption drops by 7%‑10 %, and overall equipment thermal efficiency rises by 1.5%‑6.8 %. All exhaust indicators readily meet the mandatory China‑VI ultra‑low‑emission standards.
All underlying drive programs, real‑time operating systems, OBD fault‑diagnosis modules and dynamic air‑fuel‑ratio control algorithms of the whole control system are independently coded and developed. There is no need to import controllers from Bosch, Delphi or Woodward, bringing a 40 % reduction in procurement costs. Customizable control logics are available for diverse equipment operating conditions in steel plants, ceramics factories, chemical sites and gas‑fired generator sets. Free remote firmware iteration is supported without overseas technology licensing restrictions.
The whole retrofit adopts lightweight construction procedures. Only hydrogen injection and mixing devices are added to existing natural‑gas pipelines, together with self‑developed electronic‑control units and on‑line exhaust‑gas monitoring modules, while the original main equipment remains fully retained. The shutdown period for a single boiler retrofit is controlled within three days to minimize production losses for enterprises. Existing natural‑gas pipeline networks and gas‑filling station infrastructure are fully compatible with hydrogen‑blended gas mixtures, requiring no large‑scale pipeline replacement and greatly cutting upfront project investment.
Implemented projects cover steam‑injection boilers of Shengli Oilfield, heating units in chemical‑fertilizer plants, ceramic kilns, semi‑coke gas generator sets and urban HCNG public‑transport buses. Proven references include buses for the Beijing Olympic Games, megawatt‑level generator sets in Ningxia and county‑level heating boilers in multiple regions. Upon project completion, a complete carbon‑emission‑reduction calculation report can be issued for partner enterprises to assist applications for local energy‑saving renovation and industrial decarbonization special subsidies. Combined with dual benefits from fuel savings and carbon‑asset gains, the payback period for retrofit investment is significantly shortened.
At present, the company provides full‑package retrofit EPC services, supply of complete electronic‑control sets, annual exhaust‑gas testing and carbon‑sink accounting supporting services for steel, papermaking, non‑ferrous‑metal, ceramics, heating and transportation sectors. Customized hydrogen‑blending retrofit proposals can be formulated based on enterprises’ existing equipment. Leveraging proven project references and independently‑controllable core technologies, Tianhuan Hydrogen Source keeps expanding the industrial low‑carbon retrofit market.
