Which companies are good at pre-treatment and purification technologies for coke oven gas?
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I am interested in learning about the pre-treatment and purification technologies for coke oven gas. The gas currently contains impurities such as tar, dust, H2S, COS, organic sulfur, benzene, naphthalene, and chlorine. The purified gas is intended to be used to produce LNG. Could you recommend some companies that are expert in these pre-treatment and purification processes?
At present, the purification of coke oven gas is designed by design institutes, and then manufactured by equipment manufacturers. Generally, this includes equipment for desulfurization, deamination, hydrolytic refining, adsorption, and filtration
The various institutes formerly under the Ministry of Chemical Industry, which are now part of China National Chemical Corporation – such as Institute No. 1 (located in Tianjin) – all have achieved results and are capable of handling such tasks.
PSA/TSA, that is, pressure/temperature swing adsorption technology, is generally used for the pretreatment and purification of coke oven gas. In China, there are only a few manufacturers with experience in handling such large-scale projects, and Shanghai Huaxi Chemical Technology Co., Ltd. is one of them that can do this work
First, determine the process technology you will use, and then refer to the data provided by the relevant manufacturers to select the appropriate equipment. If looking for a designer, there are generally only a few options: those with technical patents or relevant qualifications, and those who offer a higher level of purification
In recent years, there have been many COG-based LNG projects. It is recommended that the original poster pay close attention to those domestic companies that have experience in PSA/TSA technologies. As for desulfurization, the well-known companies in this field in China are those using zinc oxide; they can provide complete desulfurization solutions.
In recent years, there have been many COG-based LNG projects. It is recommended that the original poster pay close attention to those domestic companies that have experience in PSA/TSA technologies. As for desulfurization, the well-known companies in this field in China are those using zinc oxide; they can provide complete desulfurization solutions.
Active iron oxide (dry desulfurization), activated carbon for oil removal, TSA/PSA for the removal of impurities such as benzene, naphthalene, ammonia, tar, and dust; it is also necessary to consider a conversion unit to transform organic sulfur into inorganic sulfur, followed by a further desulfurization unit (zinc oxide) to remove the remaining sulfur. Additionally, methanation reactions should be considered to increase production capacity, or MDEA can be used for carbon removal. After that, drying, mercury removal, dust filtration, and deep cryogenic liquefaction are required before the product is sent to storage tanks for export. The entire process seems quite simple to me. Production capacity can be increased further by incorporating blast furnace gas in the production process. The specific consumption can be reduced to around 2.8.