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Work Progress in 2017: 1. Key events in 2017: 1) Started working on March 25. 2) Drafting of the tender documents for the sulfuric acid and desulfurization project began on April 2. 3) The environmental impact assessment documents related to sulfuric acid and desulfurization were completed on April 6. 4) Meetings were held with Jiangsu XX Chemical Equipment Factory, and a visit was made to the AR acid production line at Anyang XX Group on April 8. 5) Discussions on XXXX ionic liquid desulfurization technology took place in Chengdu on April 9. 6) A summary of the preliminary proposals from various acid production manufacturers was prepared on April 14. 7) From April 25 to 28, I attended a conference on desulfurization and denitrification in Xi’an, where the AR acid production process and desulfurization/denitrification solutions were discussed. 8) On May 12, a meeting was held in the company’s third-floor conference room to finalize the approach for sulfuric acid production; it was decided to use a process involving closed-loop dilute acid washing, followed by absorption and organic amine-based desulfurization. 9) The first bidding documents for acid production were issued on May 16. 10) The first tender meeting for the acid production project was held on May 31; the bidding companies included Shanghai XX, Jiangsu XX, and Jiangsu XX. 11) Bidding documents for organic amine-based desulfurization were issued on June 5. 12) The tender meeting for organic amine-based desulfurization took place on June 15; the bidding companies included Chengdu XX, Chengdu XX, Jiangsu XX, Chengdu XX, Changsha XX, and Hebei XX. 13) A draft of the technical agreement and contract for XXX organic amine-based desulfurization was prepared on June 25. 14) The final version of the technical agreement and contract for Changsha XXX was reviewed, revised, and finalized on July 2. 15) A meeting was held on July 4 to discuss the design aspects of the sulfuric acid production system; the scope of work was determined, and the design work officially commenced. 16) The second version of the sulfuric acid system design was submitted to Nanjing XXXX on July 12. 17) Bids for SO2 blowers will be available on July 16. 18) Bids for plate heat exchangers used in sulfuric acid purification will be available on July 20. 19) A tender for sulfuric acid fans will be held on July 26; the participating companies are Chongqing XX Factory, Wuxi XXX Co., Ltd., and Shuangjian XXX Co., Ltd. 20) A tender for plate heat exchangers used in sulfuric acid purification will take place on July 31; the participating companies are XXXX Beijing Co., Ltd., Tianjin XXX, Lanzhou XX Heat Exchange Equipment Co., Ltd., and Foshan XX Heat Exchange Equipment Co., Ltd. 21) On August 09, a technical agreement and contract will be signed with XXXX regarding the dilute acid plates used for sulfuric acid purification. 22) Nanjing XX will provide the design drawings for the sulfuric acid system on August 28. 23) A review meeting for the drawings of the acid production system will be held on September 5. And send the review comments on the drawings to Nanjing XX for modification. 24) On September 21, bids will be issued for the construction and installation of non-standard equipment for the acid production system. 25) On September 23, bids will be issued for equipment lined with tetrafluoroethylene for sulfuric acid use. 26) On September 25, bids will be issued for equipment used in sulfuric acid processing. 27) On October 10, a tender will be held for the construction and installation of non-standard equipment for the acid production system; participating companies include Weifang XX, XX Environment, Zhejiang XX, Shanghai XX, Yangzhou XX, Yangzhou XX, and XX Chemicals. 28) On October 12, a tender will be held for equipment lined with tetrafluoroethylene for sulfuric acid use; participating companies include Zhejiang XX, Wuxi XX, Changzhou XX, and Wuxi XXX. 29) From October 16 to 22, on-site inspections of suppliers of sulfuric acid equipment and manufacturing workshops will be conducted. 30) On October 25, a technical agreement and contract will be signed with Shuangdun Environment. 31) On October 29, technical agreements and contracts related to dry absorption, conversion, electrical instruments, and storage tanks will be signed with Shanghai Leqian. 32) From October 28 to 30, technical agreements and contracts will be signed for lithium bromide units, equipment lined with tetrafluoroethylene, submersible pumps for concentrated sulfuric acid, mist eliminators, acid separators, and acid coolers for anodic protection. 33) From November 13 to 15, on-site inspections of manufacturers of packing materials and valves will be conducted in Pingxiang, Wenzhou, and Hangzhou. 34) On November 16, the first project coordination meeting regarding sulfuric acid will be held; representatives from XX, XX, XX, XX Environment, XXX, and XXXX will attend, and a meeting minutes will be prepared. 35) From November 18 to 22, technical agreements and contracts will be signed for dilute acid pumps, valves, and the packing materials used in dry absorption towers. 36) On November 22, a tender will be held for the pre-treatment of Category A and B waste acids. 37) On November 25, Ruilin Institute will provide drawings for dry absorption processes and for the purification of acid. 38) On November 30, a tender will be held for circulating water cooling towers. 39) On December 4, Ruilin will provide drawings for the purification system, foundation designs, and configuration diagrams. 40) On December 8, excavation work will begin for the positioning of dry absorption equipment. 41) On December 12, quotes from manufacturers of circulating water filtration equipment will be collected and submitted. 42) On December 13, the second coordination meeting regarding sulfuric acid installation projects will be held, with participation from Leqian, Fluoside, Ruilin Institute, and Nanjing Mengjiang; a meeting minutes will be prepared. 43) On December 15, the foundations for equipment in the purification section will be positioned, and excavation work will begin. 44) On December 16, Ruilin will provide drawings for the conversion building. 45) On December 21, excavation work will begin for the storage area for purified sulfuric acid. 46) On December 22, excavation work will begin for the fan room, converters, and heat exchangers related to the conversion process. 47) Foundation excavation for the industrial acid storage area on December 23. Thus, the civil engineering construction of the sulfuric acid system has fully commenced. 48) It is expected that the equipment foundation acceptance phase will be completed by December 30, after which the equipment installation phase will begin. 2. Work progress: 1. Determination of the technical plan – The technical plan is formulated based on the principles of maturity, safety, efficiency, and reliability. For a sulfate production capacity of 80,000 tons, considering reliability requirements, the optimal technical solution is to adopt a process that involves closed dilute acid washing, one rotation per cycle for absorption, along with organic amine desulfurization. 1) Comparison of manufacturers’ proposals: The project team collected analyses and comparisons of the technical solutions provided by 9 acid production equipment manufacturers for a capacity of 80,000 tons per year. These evaluations were conducted from aspects such as the manufacturers’ scale, performance, equipment configuration, manufacturing capabilities, general contracting skills, and energy consumption, and a comparative analysis report was prepared for review by the project leaders. 2) Determination of the process plan ① Selection of the 80,000-ton acid production plan: The SO2 concentration in the flue gas from the side-blown furnace used in lead recycling was ultimately determined to be 5.22%; this value is likely on the high side, and choosing any approach presents challenges. After numerous exchanges and discussions among various parties over different scopes, it was ultimately determined through meeting discussions that the acid production process should be a closed dilute acid washing followed by a single rotation and absorption step, with the addition of organic amines for desulfurization – this is the most reliable and secure process. ②Considerations for the product plan: A: There are many battery manufacturers in this area, with an annual demand of 80,000 tons of battery acid. If AR acid can be produced, it can be sold locally without having to travel far, which reduces sales pressures while simultaneously increasing industrial output and profits. B: The production of industrial sulfuric acid is inevitable from a technological perspective. After comprehensive consideration, two product options were determined: industrial sulfuric acid and AR acid. 2. Tendering process 1) Preparation of tender documents for the acid production system: In accordance with the requirements set by the design institute, and taking into account previous technical discussions with acid production equipment manufacturers as well as past experience in tendering for such projects, tender documents for each section related to the equipment for acid production and organic amine desulfurization systems are prepared, covering aspects such as bidder qualification requirements, preparation of tender documents, bid opening procedures, evaluation procedures, selection procedures, and technical specifications. 2) Preparation of the technical agreement and preliminary draft of the contract. Technical requirements are a key focus of the bidding process, as well as the technical attachments included in the contract ； For details, please refer to the tender document and technical attachments. 3. Design review work is carried out in accordance with standards such as the \"Acid Production Design Code\", the \"Safety Technical Regulations for Industrial Sulfuric Acid Production\", and the \"Code for Fire Protection in Building Design\"; reviews are conducted on the design of acid production layout diagrams, the process flow for acid production, the design of acid production equipment, and the piping design related to acid production. 4. Engineering coordination: This mainly involves coordinating between the general contractor for acid production and the design institutes of Nanjing Mengjiang and Ruilin. It includes tasks such as preparing layout plans for the plant area, specifying civil engineering requirements, defining interface conditions, reviewing civil engineering foundation drawings, examining civil engineering structure drawings, and reviewing civil engineering construction drawings. It also entails coordinating the design aspects related to fire protection, HVAC systems, lightning protection and grounding, as well as water supply and drainage within the station area. 5. Other tasks: 1) Tendering for organic amine desulfurization; 2) Tendering for acidic wastewater treatment; 3) Tendering for high-salt wastewater treatment; 4) Tendering for circulating water cooling towers; 5) Tendering for alkaline desulfurization. Work plan for 2018: 1) Equipment installation and commissioning: Starting in January, equipment foundation inspection and installation will be carried out in accordance with the overall schedule for Anhui Huabuo Phase II sulfuric acid project and the overall schedule for Anhui Huabuo Phase II organic amine desulfurization project. The specific equipment includes: primary dynamic wave reactors, primary packing towers, secondary dynamic wave reactors, secondary packing towers, drying towers, nicotinic acid towers, absorption towers, converters, desulfurization system scrubbers, and desulfurization towers. 2) Equipment to be installed in February: primary electrostatic precipitators, secondary electrostatic precipitators, anti-corrosion work inside the drying tower, anti-corrosion work inside the nicotinic acid tower, anti-corrosion work inside the absorption tower, conversion heat exchangers, and sulfuric acid storage tanks. 3) In March, gas pipelines will be installed, fixed equipment will be placed in position, and liquid pipelines and valves will be installed. 4) In April, electrical and instrumentation installations will begin, along with pipeline and equipment purging. 5) In May, individual unit tests and combined system tests will be conducted, followed by readiness for operation. 6) Pilot production will start in June. 2) Operator training: To ensure smooth commissioning and production of sulfuric acid, it is necessary to provide training for employees ； The relevant training programs are as follows: 1) Training on acid production safety knowledge. 2) Training on obtaining certification for the materials of pressure vessels such as nicotinic acid evaporators, as well as special equipment. 3) Safety operation training for equipment related to acid production facilities. 4) Training on the safe operation of low-temperature related equipment such as lithium bromide chiller units. 5) Safety operation training for fan and related equipment. 6) Safety operation training for pumping equipment. 7) Training on the skills required for the acid production position. 8) Training on the skills required for the desulfurization position. 3. Preparation of technical documents: To standardize the operations at oxygen production stations and ensure safe and orderly production, it is necessary to prepare relevant operating procedures ； The plan is as follows: 1) Overall commissioning plan for the acid production and desulfurization systems. 2) Plan for purging, pressure testing, heating, and commissioning of the acid production and desulfurization systems. 3) Safety operating procedures for individual acid production and desulfurization equipment. 4) Operating procedures for acid production and desulfurization processes. 5) Management systems related to the acid production and desulfurization systems. 6) Emergency plan for sulfuric acid leaks, with opportunities to conduct drills