35 results about "Sulfurifustis" patented technology

The invention relates to a post-processing system and its desulfurization device, control method and storage medium. The desulfurization device includes a renewable sulfur trap, a storage sulfur trap and a first three-way valve. The renewable sulfur trap The filter and the first three-way valve are sequentially arranged upstream of the main post-processing device along the exhaust flow direction. The inlet of the first three-way valve is connected with the outlet of the regenerative sulfur trap, and the first outlet of the first three-way valve is connected with the main aftertreatment device. The inlet of the post-processing device is connected, the second outlet of the first three-way valve is connected with a bypass pipeline, and the storage type sulfur trap is installed in the bypass pipeline; the regeneration of the regenerable sulfur trap can be avoided through the above desulfurization device It does not need to prolong the regeneration interval of the regenerative sulfur trap, nor does it need to increase the volume of the regenerative sulfur trap. During non-regeneration, it does not affect the exhaust back pressure, but The storage sulfur trap is only used to capture the sulfur compounds released during the regeneration of the renewable sulfur trap, which has a long service life and does not need to be replaced frequently.

The invention relates to a sulfur-tolerant methanation catalyst and a preparation method thereof and mainly aims at solving the problems of low CO conversion rate and poor CH4 selectivity of the sulfur-tolerant methanation catalyst in the prior art. The problems are better solved by adopting the technical scheme that transition metal sulfides and phosphides are used as active ingredients in the sulfur-tolerant methanation catalyst, and the catalyst comprises the following components in percentage by mass: a) 5-25% of MoS2; b) 0-3.5% of Fe3P; c) 0-5% of Ni3P; and d) aluminum oxide. Compared with the traditional sulfur-tolerant methanation catalyst, the sulfur-tolerant methanation catalyst has high CO conversion rate and CH4 selectivity, is used for solving the problems of low activity and poor selectivity of the traditional sulfur-tolerant methanation catalyst and can be used for production for preparing methane by using synthesis gas.

The invention discloses a sulfur-resistant methanation system and method for coal-based natural gas, which belongs to the technical field of coal-based natural gas; firstly, a coal gasification process combining crushed coal gasification and pulverized coal gasification is adopted, and an adiabatic reactor and a homogeneous temperature reactor are used in conjunction with each other. The combined sulfur-resistant methanation process performs methane synthesis on the crude gas to increase the effective content of methane in the synthesis gas and reduce the reaction load of the subsequent section, and then remove the sulfide and carbon dioxide in the raw gas through a conventional purification process, and finally through adiabatic The deep methanation process combining the reactor and the uniform temperature reactor produces qualified natural gas for civil use; this process system realizes the comprehensive utilization of raw coal, effectively reduces the production load of the methanation process, and reduces the size of the reactor and pipeline equipment , improve the unit production capacity, and make full use of the strong exothermic characteristics of the methanation reaction to produce medium-pressure steam and high-quality supersaturated steam, rationally utilize the heat in the process system, reduce energy consumption, and increase production efficiency.

The invention provides a biological regulation preparation. The biological regulation preparation uses polymer flooding produced water as a raw material, and after anaerobic fermentation by adding nutrients, bacteria with sulfur ion oxidizing ability, that is, sulfur oxidizing bacteria, will be formed in the fermentation liquid , sulfur-oxidizing bacteria can fix CO 2 As a carbon source, it can perform chemoautotrophic growth and can also perform chemoheterotrophic growth; sulfur oxidizing bacteria can be sulfide, elemental sulfur, sulfite, thiosulfate, thiocyanate, SDS, tetrasulfate , p-aminobenzenesulfonic acid and methionine are used as energy sources for growth metabolism. Sulfur-oxidizing bacteria have a competitive inhibitory effect on sulfate-reducing bacteria. The fermentation broth containing sulfur-oxidizing bacteria is reused for polymer flooding produced water, which can inhibit the growth of sulfate-reducing bacteria (SRB) and inhibit the microbial corrosion of substrate materials. , while maintaining the stability of polymer-containing wastewater, such water can be used to configure polymer flooding fluid to save water resources.

The invention provides a sulfur response signal enhancement component of a flame photometric detector, which is composed of a coaxially placed quartz rod, a circular porous baffle, a T-shaped cylinder and a metal ring. The metal ring is set on the quartz rod, and the distance from the lower end of the quartz rod to the nozzle is adjusted by changing the position of the metal ring on the quartz rod. Secure the circular perforated baffle of the response signal enhancement assembly between the flame photometric detector combustion chamber and the vent cover. The circular perforated baffle does not affect the discharge of gases in the combustion chamber. The response signal enhancement component of the present invention has the following advantages: the placed quartz rod reduces the flame temperature, increases the luminous area of ​​sulfur in the flame, and then improves the sensitivity of detecting sulfide; the mechanical structure of the component is simple, compact and reliable; By changing the position of the metal ring, the distance from the lower end of the quartz rod to the nozzle can be adjusted, thereby adjusting the contact area between the quartz rod and the flame.