English — Forum #115 (Page 5/11)

1. Seeking methods for treating nitration waste acid water - HCBBS Forum
2. How to clean a nicotinic acid tank - HCBBS Forum
3. Reduction of smelting flue gas to produce sulfur - HCBBS Forum
4. Loading sulfuric acid - HCBBS Forum
5. What is the corrosion rate of 5% dilute sulfuric acid on iron storage tanks? - HCBBS Forum
6. Treatment of waste acid from sulfuric acid production using pyrite: Process for treating pyrite and magnetite - HCBBS Forum
7. The issue of the amount of O2 introduced into the sulfuric acid reactor - HCBBS Forum
8. Ways to utilize by-product acid waste for the production of magnesium sulfate - HCBBS Forum
9. Factors affecting acid condensation at the steam injection bottom of waste heat recovery units - HCBBS Forum
10. Facing the challenges of sulfur dependence and phosphogypsum issues – Tianji Nitric Acid Phosphate Fertilizer seeks solutions to advance the phosphate fertilizer industry 　 - HCBBS Forum
11. Sulfur prices rose by 160% year-on-year, exceeding 4,000 yuan - HCBBS Forum
12. Production process of battery acid and material consumption - HCBBS Forum
13. The pilot run of Guizhou Phosphorus Group’s electronic-grade phosphoric acid project was a success - HCBBS Forum
14. Signing of 73 billion yuan investment project for integrated phosphorus-coal chemical industry in Bijie, Guizhou - HCBBS Forum
15. Please give advice from sulfuric acid technical experts on what matters should be paid attention to during winter production. Please give detailed answers. Thanks - HCBBS Forum
16. The dry acid absorbent used in the production of acid from copper smelting flue gas has black spots - HCBBS Forum
17. The toxicity hazard of sulfuric acid should be classified as \"extremely hazardous\"; is it still permissible to use plastic materials for storage tanks and pipelines containing sulfuric acid at room temperature? - HCBBS Forum
18. I would like to ask about conversion rate and yield - HCBBS Forum
19. Gas composition of acid-making off-gases from recycled lead smelting (after desulfurization) - HCBBS Forum
20. How is the air volume of the main fan in the pyrite-based acid production plant calculated? - HCBBS Forum
21. A sulfuric acid system has started to heat up - HCBBS Forum
22. Comparison of UHWMPE and PTFE - HCBBS Forum
23. Gentlemen, those who are often exposed to sulfuric acid are inevitably at risk of getting burned by it. Please share what methods work best for dealing with such situations! - HCBBS Forum
24. The coating on the metal surface is uneven after electroplating - HCBBS Forum
25. Excessive particulate matter in flue gases from the sulfuric acid plant - HCBBS Forum
26. Industrial 68% sulfuric acid is placed in a container; by heating the container directly, can we obtain a concentration of 98%? - HCBBS Forum
27. Remove impurities of hydrochloric acid and nitric acid from sulfuric acid - HCBBS Forum
28. Precautions for WSA furnace drying - HCBBS Forum
29. How to deal with leaks in the WSA converter manhole - HCBBS Forum
30. With production suspended for a month, does the waste heat boiler need maintenance? - HCBBS Forum
31. Converter problems - HCBBS Forum
32. Those companies that produce 20% fuming sulfuric acid have achieved higher sales volumes - HCBBS Forum
33. The current situation facing sulfuric acid manufacturers - HCBBS Forum
34. What is the pressure drop of a tubular acid separator? - HCBBS Forum
35. Happy New Year 2017 to everyone - HCBBS Forum
36. How to adjust when the absorbed acid concentration increases or decreases? - HCBBS Forum
37. Seeking help: There is a bit of cold ash in the boiling furnace - HCBBS Forum
38. Are there any distance requirements between the sulfuric acid tank area and the surrounding ponds? How far is it? - HCBBS Forum
39. Jilin - HCBBS Forum
40. Employee question bank - HCBBS Forum
41. The vanadium catalyst for wet acid production developed by Nanhua Company was successfully applied in Guangdong Hongrui’s 300,000-ton/year project for comprehensive utilization of resources in wet acid production - HCBBS Forum
42. Yellow smoke appears in the exhaust gases generated during gold smelting for acid production – what is the reason? - HCBBS Forum
43. Problems of salt formation and blockage due to sulfuric acid concentration - HCBBS Forum
44. Which company in Ningbo is involved in the wet process for acid production? - HCBBS Forum
45. Share the diameter and capacity of the boiling furnace for drying tailings - HCBBS Forum
46. 【Ten Years of Rapid Development in Chemical Equipment】1667–2008: China’s domestically produced double-pressure nitric acid production plants at the international forefront - HCBBS Forum
47. Number of sulfuric acid plants using hydrogen peroxide tail gas absorption - HCBBS Forum
48. Trial production of the production line capable of manufacturing 100,000 tons of phosphorus chemical products per year at Hengguang Co., Ltd - HCBBS Forum
49. The dilute sulfuric acid concentration project of Qinghai Yihua Chemical Co., Ltd. was successfully commissioned in one go - HCBBS Forum
50. A subsidiary of Tianyuan Shares transferred phosphorus yellow production capacity quotas for 185 million yuan - HCBBS Forum
51. I have a question regarding the purification of sulfuric acid and reducing the generation of contaminated acid - HCBBS Forum
52. Elemental sulfur clogs the heat exchanger - HCBBS Forum
53. What recovery processes are used for the concentration and recovery of waste acid? - HCBBS Forum
54. The Guizhou Province Phosphorus Chemical Industry Digital Transformation Promotion Center was officially established and inaugurated at Guizhou Phosphorus Chemical Group - HCBBS Forum
55. Sulfuric acid concentration after waste acid regeneration - HCBBS Forum
56. 2009 year-end message - HCBBS Forum
57. How is the hydrazine added to the WSA deaerator controlled? - HCBBS Forum
58. Technologies for the resource utilization of sulfuric acid waste from steel industry pickling processes - HCBBS Forum
59. Regarding the catalysts for alkylation units - HCBBS Forum
60. Structural issues of the waste heat boiler tubes in the semi-dry acid production process - HCBBS Forum
61. Dear acid industry professionals, what material is used for the acid transfer pipes inside the dry absorption tanks in your respective sulfuric acid plants? - HCBBS Forum
62. The relocation, upgrading, and supporting fine phosphorus chemical projects for 400,000 tons of DAP, costing 5.5 billion yuan, have officially kicked off - HCBBS Forum
63. Some discussions on the purposes of hot and cold blowing in sulfur-based acid production - HCBBS Forum
64. Is it easy for sulfuric acid technicians to find jobs? - HCBBS Forum
65. What are the well-known domestic manufacturers of sulfur dioxide fans, what are their respective features, and what considerations should be taken into account when selecting such equipment? - HCBBS Forum
66. How is HRs condensing acid formed? - HCBBS Forum
67. Sulfuric acid plant maintenance projects - HCBBS Forum
68. Request for calculation of steam generation per ton of acid produced in low-temperature heat recovery - HCBBS Forum
69. The sulfuric acid turns white after maintenance - HCBBS Forum
70. How to use a sulfide gun correctly? - HCBBS Forum
71. Regarding the relationship between the calculation of the overall conversion rate and the sampling points - HCBBS Forum
72. Insulation material for the converter - HCBBS Forum
73. Raw materials for acid production from pyrite - HCBBS Forum
74. Dry cycle acid from sulfur-based acid production and sulfur concentrate-based acid production - HCBBS Forum
75. Seeking to purchase acid sludge from sulfuric acid plants - HCBBS Forum
76. What is the sulfate content in the hydrochloric acid produced as a by-product of potassium sulfate? - HCBBS Forum
77. Waste acid pyrolysis - HCBBS Forum
78. High-temperature sulfuric acid material - HCBBS Forum
79. Roasting of high-sulfur ores results in large particles - HCBBS Forum
80. Ammonium sulfate reaches a peak and then fluctuates in a range-bound pattern - HCBBS Forum
81. Is the operating current of the conversion main fan related to the outlet positive pressure or to the total pressure? - HCBBS Forum
82. The conversion catalysts were inspected after the shutdown for major repairs; both the second and third stage catalysts showed varying degrees of blackening. In mild cases, the blackened layer was 20 centimeters thick, while in severe cases the entire catalyst stage was blackened. In the second and third stages, the color can sometimes turn blue, bluish-green; there’s no specific information available on this - HCBBS Forum
83. How to separate a mixture of 98% concentrated sulfuric acid and barium sulfate? - HCBBS Forum
84. Why does the catalyst in the middle and lower layers of the conversion layer become scarred and discolored? - HCBBS Forum
85. Survey on the usage of sulfuric acid desiccant-lined brick towers - HCBBS Forum
86. How to deal with a leak at an outlet during conversion? - HCBBS Forum
87. Sulfur trioxide manufacturers - HCBBS Forum
88. Are there any manufacturers that can produce Kunming Jiahe vertical sulfuric acid pumps? - HCBBS Forum
89. Fiber mist eliminator - HCBBS Forum
90. Who has Mengmoke’s contact information? - HCBBS Forum
91. Views on the revision of the analysis standards for sulfuric acid mist - HCBBS Forum
92. The 100-ton/year high-stability two-dimensional black phosphorus production technology development project of Xingfa Group is currently in the stage of optimizing the process design - HCBBS Forum
93. The role of ORP in exhaust gas desulfurization - HCBBS Forum
94. How is waste acid handled domestically? - HCBBS Forum
95. Gas composition of acid-making off-gases (after desulfurization) from recycled lead smelting - HCBBS Forum
96. The moisture level at the fan outlet is either high or low - HCBBS Forum
97. Questions regarding the operation of the Topsoe WSA spent acid regeneration unit? - HCBBS Forum
98. A rotating and suction sulfuric acid device! - HCBBS Forum
99. Materials/Papers Presented at the 2024 Chengdu Sulfuric Acid Technology Conference - HCBBS Forum
100. Seeking purchase of by-product sulfuric acid AN and sodium fluoride - HCBBS Forum