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The ammonia-soda process for soda ash production generates large volumes of distillation waste liquid containing calcium chloride, posing a long-standing environmental challenge for the industry. Addressing this critical issue, several proprietary technologies recognized by industry associations have been developed, including underground cavity injection technology for waste slurry, waste slurry mixing technology, and comprehensive waste liquid treatment technology. These solutions cover the complete technical chain from waste liquid pretreatment and solid-liquid separation to final disposal.

These technologies have been successfully applied and verified in waste liquid treatment projects at multiple large-scale soda ash enterprises domestically, with related projects receiving provincial-level science and technology progress awards. Tailored technical solutions can be provided based on the client's specific conditions, including geological factors, emission standards, and site constraints. Deliverables include the waste liquid treatment process package, basic design, and operation manuals.

Proprietary technology certified by industry associations. The soda ash production process imposes strict quality requirements on raw salt; however, sea salt, due to its high impurity content, is typically difficult to use directly. This technology employs a multi-stage washing and refining process to cost-effectively convert sea salt into raw salt (washed salt) that meets the requirements for soda ash production. This enables coastal soda ash enterprises to eliminate their dependence on rock salt, significantly reducing raw material transportation costs.

Core process stages include brine preparation, multi-stage counter-current washing, dewatering, and drying. Deliverables include the process package and basic design documents. This solution is suitable for coastal chemical enterprises that possess sea salt resources but lack access to rock salt supplies.

Proprietary technology certified by industry associations. Traditional production of heavy soda ash typically employs dry or wet hydration processes, which involve lengthy workflows and high energy consumption. This technology utilizes a direct separation liquid-phase hydration route, integrating the hydration conversion of light soda ash and solid-liquid separation into a single step. This simplifies the process flow, reduces steam consumption, and lowers equipment investment. The resulting heavy soda ash products feature high bulk density and low dust content, meeting the quality requirements of high-end users such as float glass manufacturers.

Suitable for adding heavy soda ash production lines to existing soda ash facilities or for technical selection in the heavy soda ash production processes of new projects.

"A proprietary technology certified by the industry association, addressing the recovery challenge of heavy soda filter mother liquor in soda ash production. This technology employs a vacuum distillation process route to achieve efficient separation and recovery of ammonia and carbon dioxide from the mother liquor at relatively lower temperatures. Compared with traditional atmospheric distillation, this technology significantly reduces steam consumption, improves distillation efficiency, while simultaneously mitigating equipment corrosion and scaling issues.

This technology is applicable to energy-saving transformation of the distillation process in ammonia-soda process soda ash enterprises, and can also serve as the preferred solution for new soda ash plant distillation systems. Deliverables include the proprietary technology process package, key equipment selection guidance, and on-site调试 support."

The combined soda ash process co-produces soda ash and ammonium chloride, featuring high utilization rates of raw salt and zero solid waste discharge, making it one of the mainstream soda manufacturing processes in China. Decades of engineering practice have been accumulated in this technical direction, completing the design of multiple combined soda projects with capacities ranging from 450,000 to 1.2 million tons per year, covering various types such as new construction, expansion, and relocation renovation. Related projects have repeatedly won national and provincial-level awards for excellent engineering design.

Core technical highlights include optimization of the carbonation system, improvement of mother liquor circulation efficiency, and enhancement of ammonium chloride drying and granulation processes. The transfer content covers the complete process technology package, basic design, operating procedures, and personnel training, suitable for enterprises with synthetic ammonia facilities or conditions for purchasing liquid ammonia.

With over sixty years of deep expertise in the Solvay process for soda ash production, we have established a comprehensive process technology system covering the entire workflow from brine purification, carbonation crystallization, and filtration separation to calcination and packaging. We hold two invention patents and multiple utility model patents, along with several proprietary technologies recognized by industry associations, covering key processes such as carbonation, distillation, calcination, and filtration. Domestically, we have completed the design of numerous Solvay process soda ash projects, with single-unit design capacities ranging from 300,000 to 1,000,000 tons per year. Additionally, we have undertaken a 300,000-ton-per-year Solvay process soda ash project in the Middle East. Relevant projects have received first prizes for excellent engineering design and scientific and technological progress awards at the provincial and ministerial levels.

Deliverables for technology transfer include: a complete process package (containing material balance, heat balance, equipment list, and major equipment data sheets), basic design documents, operation manuals, and technical training. Customized technical solutions can be adjusted based on the owner's raw material conditions (rock salt, sea salt, lake salt) and product schemes.

In the field of industrial environmental governance, a technical system covering wastewater, waste gas, and solid waste has been established. For wastewater, catalytic wet oxidation technology is mastered; for waste gas, activated coke flue gas desulfurization and denitrification technology is mastered; for solid waste, the scope includes hazardous waste disposal and waste mineral oil regeneration (with delivered projects at scales of 35,000 tons/year and 90,000 tons/year). In the soda ash industry, three proprietary technologies for distillation waste liquid treatment are also mastered: treatment of ammonia-soda distillation waste liquid, slurry mixing of waste residue, and injection of waste residue liquid into underground solution cavities. Full-process services are available, ranging from environmental feasibility studies and scheme design to construction drawings.

Accumulated multiple process technology routes in the fields of coal chemical and C1 chemistry. Representative projects completed include: 60,000 t/a and 120,000 t/a petroleum needle coke processing unit projects, 150,000 t/a coal tar hydrogenation unit optimization and revamping, 1.4 million t/a coal tar hydrogenation unit pretreatment process package development, 5,000 t/a dimethyl carbonate industrial demonstration project from indirect preparation of urea solution and methanol (including construction drawings + feasibility study + HAZOP), 100,000 t/a CO2 hydrogenation to methanol process package development, etc. The methanol-to-olefins (MTO) pilot plant project received the Ministry of Chemical Industry Award and Provincial Excellent Design Award. This field is suitable for countries and regions with abundant coal resources and interest in developing coal-based chemicals.

Possesses comprehensive EPC (Engineering, Procurement, and Construction) general contracting capabilities spanning design, procurement, construction management, and commissioning acceptance. An internal dedicated general contracting project department is established, with a core management team of approximately 30 members, capable of flexible expansion based on project scale. Delivered EPC project types include: general contracting for a 300,000-ton/year caprolactam plant and supporting hydrogen production facilities; general contracting for large-scale steel sintering flue gas active carbon desulfurization and denitrification systems; overseas LPG tank farm expansion projects; integrated design and construction for molecular sieve catalyst plants; and general contracting for the design and construction of chemical wastewater treatment facilities. Capabilities also extend to special engineering such as seawater desalination process design. Deliverables encompass complete as-built documentation, performance assessment reports, operation and maintenance manuals, and systematic training for operators. The standard service cycle ranges from 6 to 24 months, depending on project complexity. Proven experience in executing EPC projects in overseas markets, including Iran.

Centered on the demand for upstream chemicals in the semiconductor and photovoltaic industries, a series of process technology capabilities have been established. Key focus areas include: technical upgrades for ultra-pure hydrogen peroxide and photoresist; process development and facility retrofitting for electrolytic production of tetramethylammonium hydroxide (TMAH); a 1,500-ton-per-year integrated circuit precursor project; and high-purity electronic specialty gas production and workshop design. Concurrently, capabilities in designing cleanrooms and specialty gas stations are available. Technical services ranging from process feasibility assessment to factory construction are provided for investors seeking to enter the electronic chemicals sector.