229 results about "Sulfur hydride" patented technology

The present application relates to the field of drilling fluid filtration, especially to a kind of oil drilling fluid cleaning filtration equipment and its use method.The technical problem is that in the process of cleaning and filtering drilling mud, hydrogen sulfide and gas drilling fluid are wrapped in oil to form bubbles, which are difficult to separate, reduce the recycling rate of gas drilling fluid, increase the cost of oil exploitation, and at the same time, since hydrogen sulfide mixes with air in gas drilling fluid to form flammable and explosive gas, combustion and explosion are easy to occur in the container, which endangers the personal safety of surrounding workers.The technical scheme is: a kind of oil drilling fluid cleaning filtration equipment, including first mounting frame and vibrating screen, etc.;vibrating screen is arranged on the first mounting frame for separating cuttings in drilling mud.The present application realizes the crushing of bubbles on the rotating crushing block by the crushing block, avoids the wrapping of part of gas by oil, ensures the complete separation of gas from oil, and guarantees the liquid-gas separation effect.

This utility model relates to the field of biogas hydrogen sulfide pipeline technology and discloses a protective structure for biogas hydrogen sulfide pipeline corrosion, including a transmission pipeline and a fixing sleeve. A spraying mechanism is fixedly installed on the side of the transmission pipeline, and a flow rate regulating mechanism is fixedly installed on the inner wall of the fixing sleeve. The flow rate regulating mechanism includes a bend, and a connecting block is fixedly installed on the inner wall of the bend. First, the speed of the drive motor is adjusted by the controller, thereby adjusting the flow rate generated when the fan blades rotate. Then, the drive motor is turned on, and the rotation of the drive motor drives the fan blades to rotate, thereby drawing air from outside the bend into the bend. The air is then diverted through the bend and split into eight transmission pipes, and then transmitted through a filter plate to the inside of the transmission pipeline. This adjustment of the flow rate inside the transmission pipeline helps to reduce the corrosiveness of hydrogen sulfide to the transmission pipeline. By controlling the upper limit of the flow rate, erosion corrosion is minimized, thus improving the protection of the transmission pipeline.

This application relates to the field of lubricating oil distillation technology, specifically disclosing a device for removing hydrogen sulfide from waste lubricating oil regeneration distillation tail gas and recycling it. The device includes a base, a distillation vessel, and valves. The distillation vessel is fixedly installed on the upper surface of the base. A first connecting pipe is sleeved at the bottom of the distillation vessel, and an oil storage tank is sleeved at the end of the first connecting pipe away from the distillation vessel. A second connecting pipe is provided at the top of the distillation vessel. This invention can pre-treat waste lubricating oil through a pre-treatment component, preventing mechanical impurities and metal particles contained in the waste oil from clogging the equipment channels during distillation heating. A protective component can buffer the pressure inside the distillation vessel, adjusting the gas flow path according to pressure changes. It can promptly issue an alarm when the pressure is high, and has a dual buffering and dual alarm effect, providing sufficient time for maintenance personnel and improving their personal safety.

This invention provides a tert-nonylthiol and its synthesis method. The synthesis steps are as follows: nonene and hydrogen sulfide are preheated separately, then the preheated nonene and hydrogen sulfide are mixed, and the mixture is reacted under the action of a catalyst to obtain tert-nonylthiol. The preheating temperature of nonene is 40-50℃, and the preheating temperature of hydrogen sulfide is 50-60℃. This invention provides mild reaction conditions and precise preheating of nonene and hydrogen chloride separately. The product prepared by this method has a purity of over 99.0%, meeting the requirements of high-end industrial applications for high-purity tert-nonylthiol.

This disclosure relates to a desulfurization method for sulfur-containing wastewater, comprising the following steps: the sulfur-containing wastewater is introduced into an anaerobic biological unit for sulfate reduction treatment to obtain reduced wastewater; the reduced wastewater and oxygen-containing gas are introduced into a hydrogen sulfide stripping unit for stripping treatment to obtain hydrogen sulfide gas products and stripped water; the stripped water is introduced into a water quality stabilization unit for activated carbon adsorption treatment to obtain purified water; the hydrogen sulfide gas products and air are introduced into a biological oxidation unit for hydrogen sulfide oxidation treatment to obtain elemental sulfur and tail gas; the tail gas obtained from the biological oxidation unit is introduced into a tail gas treatment unit, where it undergoes sequential water vapor removal treatment, activated carbon adsorption treatment, and photocatalytic oxidation treatment to obtain purified tail gas. This disclosure enables efficient treatment of high-concentration sulfate wastewater and the recovery of elemental sulfur.

The application relates to a method for synthesizing lithium sulfide based on micro-channel continuous flow and multi-stage gradient temperature control, and belongs to the technical field of lithium-sulfur batteries. The method solves the technical problems of low mass transfer efficiency, insufficient temperature control precision, poor product stability and the like in the existing lithium sulfide synthesis process. The method comprises the following steps: S1, pretreating raw materials; S2, configuring lithium hydroxide organic suspension by using the pretreated lithium hydroxide and anhydrous N-methyl pyrrolidone; S3, constructing a micro-channel reaction system and performing pretreatment; S4, mixing and reacting lithium hydroxide organic suspension and pretreated hydrogen sulfide in the micro-channel reactor; S5, performing solid-liquid separation on the liquid after the reaction in step S4; and S6, performing solvent recovery and hydrogen sulfide recycling treatment. Compared with the prior art, the application has the advantages of high temperature control precision, excellent stability, energy saving and carbon reduction, and economic and environmental benefits.

This invention discloses an electrostatic precipitator system for dust treatment, relating to the field of rubber production technology. It includes a pretreatment unit, a main treatment unit, and a post-treatment unit. The pretreatment unit includes a cyclone alkali spray tower, the main treatment unit includes a wet electrostatic precipitator, and the post-treatment unit includes a demister filter and an activated carbon adsorber. This invention employs a tiered process: cyclone alkali spray tower pretreatment, wet electrostatic precipitator main treatment, and demister filter and activated carbon adsorber post-treatment, targeting different types of pollutants. The pretreatment stage efficiently removes oily substances, large particulate dust, and hydrogen sulfide, creating suitable conditions for the main treatment; the electrostatic precipitator stage achieves deep dust separation; and the demister filter stage intercepts residual fine dust and water mist. This multi-stage synergy ensures efficient waste gas purification.

This application relates to the field of tail gas absorption technology, specifically disclosing a tail gas absorption device for phenothiazine production. The pretreatment mechanism in this application can induce sublimation of phenothiazine microcrystals in the tail gas through multiple stages, allowing the microcrystals to grow sufficiently to a collectable size before entering the collection zone. Then, a multi-stage blade collection mechanism progressively adheres and collects the grown microcrystals, achieving efficient recovery of the phenothiazine microcrystals. Simultaneously, an absorption tower is set up to absorb hydrogen sulfide from the collected tail gas with alkaline solution, and an activated carbon adsorption tower is set up to deeply purify residual hydrogen sulfide and volatile organic compounds. This forms a complete treatment chain with graded treatment and each stage performing its specific function, effectively solving the problem of blockage caused by microcrystals directly entering the absorption tower in existing technologies, while also achieving the recycling of high-value products.

The present application discloses a kind of sewage pipe network dredging sludge treatment device, and the present application relates to sludge treatment technical field.The sewage pipe network dredging sludge treatment device, by being provided with first processing box, first motor, heating wire stirring shaft, scraper and stirring rod, the function of treating sludge is realized, heating wire in first processing box directly heats sludge, cooperates with the continuous overturning of stirring shaft and stirring rod, effectively prevent sludge accumulation and caking, improve drying uniformity, scraper rotates with stirring shaft, real-time remove the sludge adhered to the inner wall of box, avoid long-term scale influence heat transfer efficiency;By being provided with second processing box, first connecting pipe, condenser pipe, activated carbon plate and drying plate, the function of treating water vapor and gas generated in drying process is realized, after gas is condensed, residual moisture is absorbed by drying plate, ensure that emission gas is dry, activated carbon plate absorbs hydrogen sulfide, ammonia and other odor components in gas, avoid secondary pollution.

The application discloses a kind of corrosion and scale inhibitor sulfur removal agent and preparation method thereof, belong to sulfur removal agent technical field, by weight parts including following components: hydroxyl alkyl amine modified triazine compound 30~60 parts, polyaspartic acid scale inhibitor 10~25 parts, sodium gluconate 5~15 parts, ethylenediamine tetramethylene phosphonic acid sodium 3~10 parts, organic phosphonic acid corrosion inhibitor 2~8 parts and water 20~40 parts;The hydroxyl alkyl amine modified triazine compound is prepared by triazine sulfur removal agent and N-methyl diethanolamine or diethanolamine under 50~80 ℃ for 2~4 hours, wherein the molar ratio of triazine sulfur removal agent and hydroxyl alkyl amine is 1:0.3~0.8.The application is prepared by using hydroxyl alkyl amine modified triazine compound as core sulfur removal component, triazine sulfur removal agent and N-methyl diethanolamine or diethanolamine are reacted under specific temperature and time, which greatly improves the capture activity and reaction rate of hydrogen sulfide, and improves water solubility and dispersibility, realizes efficient sulfur removal.

This invention relates to the field of petrochemical catalytic desulfurization technology, specifically disclosing a high-efficiency desulfurizing agent, its preparation method, and its application in the desulfurization of heavy naphtha. The desulfurizing agent provided by this invention has a "two-level" metal active center. The first level is a cobalt center in biochar, and the second level is a nickel-copper bimetallic center introduced through impregnation on the surface of a composite carrier. The desulfurizing agent provided by this invention has excellent desulfurization effect. Under conditions of 140°C and no hydrogen, it can simultaneously remove inorganic sulfur such as hydrogen sulfide and organic sulfur such as thiols, thioethers, and thiophenes from heavy naphtha obtained by hydrocracking of heavy diesel oil, wax oil, or mixed diesel and wax oil, reducing the total sulfur content from 25-40 μg·g. ‑1 Reduced to 0.2 μg·g ‑1 The following methods can effectively protect bimetallic (multimetallic) reforming catalysts from sulfur poisoning, and the preparation process is green and controllable, making it suitable for large-scale industrial applications.

This invention discloses a flue gas decarbonization system and process for natural gas purification, including a natural gas desulfurization unit, a sulfur recovery unit, a tail gas treatment unit, and an acid gas enrichment unit. The tail gas treatment unit includes a tail gas hydrogenation reactor, a tail gas absorption tower, and a tail gas regeneration tower. The acid gas enrichment unit includes an acid gas absorption tower and an acid gas regeneration tower. The tail gas absorption tower uses a fully desulfurized solvent to remove carbon dioxide and a small amount of sulfides from the tail gas, and then regenerates it with a rich solution to obtain a high carbon-to-sulfur ratio acid gas stream. The acid gas absorption tower uses a selective desulfurization solvent to remove hydrogen sulfide from the high carbon-to-sulfur ratio acid gas to obtain a high-concentration carbon dioxide stream. This invention utilizes the existing tail gas treatment unit, modifies the absorption tower, uses a fully desulfurized solvent to remove sulfur and recover carbon dioxide and a small amount of hydrogen sulfide from the tail gas, regenerates it to obtain a small flow rate of high carbon-to-sulfur ratio acid gas, and then uses an acid gas enrichment device to selectively absorb the acid gas to obtain a high-concentration carbon dioxide stream, thus completing the decarbonization treatment and efficient carbon capture.

The application discloses a method for treating hydrogen sulfide in oil wells, which comprises the following steps: (1) screening of test oil reservoir; (2) preparation of specific virulent SRB phage stock solution; (3) enrichment of specific virulent SRB phage; (4) determination of optimal titer of specific virulent SRB phage solution; (5) selection of phage fusion bactericide; (6) determination of optimal intervention point of bactericide; (7) field test and effect evaluation. The application has the following advantages: (1) wide adaptability, simple method and good operability; (2) strong pertinence; (3) phage bactericidal action can prevent the generation of bacterial drug resistance and can prolong the use time of bactericide; (4) the cost is reduced by more than 50% compared with the prior art; meanwhile, the damage of bactericide toxicity to the formation is reduced, and the method is economic and environment-friendly.

The present application relates to hydrogen sulfide treatment process technical field, specifically relates to a kind of continuous processing method and processing system of hydrogen sulfide-containing gas.The method includes: (1) in the presence of electrolyte, hydrogen sulfide-containing raw gas is continuously introduced into catalytic electrolysis unit and is carried out catalytic electrolysis, and the anode electrolysis zone of catalytic electrolysis unit obtains purified gas and lower layer's sulfur-rich electrolyte, and the cathode electrolysis zone in catalytic electrolysis unit obtains hydrogen;(2) sulfur-rich electrolyte is continuously introduced into anode electrolysis zone, then is carried out flash evaporation and obtains the electrolyte after flash evaporation;(3) the electrolyte after flash evaporation is sequentially deposited, and pressure filtration is carried out, and electrolyte lean solution, pressure filtrate and product sulfur are obtained;(4) pressure filtrate returns step (3) and is deposited, and part of electrolyte lean solution overflow returns step (1) and participates in catalytic electrolysis.The method of the present application can be coupled to produce hydrogen while treating H2S, so that the wasted hydrogen element can be used as green hydrogen production.

The present application relates to the technical field of coal mine safety mining and mine disaster prevention and control, and particularly relates to a coal mine underground hydrogen sulfide intelligent grading prevention and control and comprehensive management method. The method first collects target mine geology, coal quality, hydrogen sulfide emission and field data, and builds a basic data set after preprocessing and standardization; based on the cause type and concentration distribution, a sensitive area is divided and a grading early warning index is established; a four-in-one comprehensive management model is constructed; through real-time feedback of online monitoring data, dynamic optimization of absorption liquid formula, injection parameters, ventilation system and plugging process is realized; the management effect is evaluated in multiple dimensions, and if it is unqualified, parameter adaptive adjustment and global iterative optimization are started; and finally an intelligent, visual and economic and environmentally friendly hydrogen sulfide whole-process prevention and control system is formed. The present application solves the problems of poor injection effect and low intelligent level in the prior art, and is suitable for coal mine hydrogen sulfide disaster prevention and control, and provides support for safe mining of deep high-sulfur coal seams.

The invention provides a high-strength hydrogen sulfide stress corrosion resistant four-way valve body and a manufacturing method thereof, and relates to the field of alloy steel, the four-way valve body is prepared by respectively boring geometric center lines in the length direction and the height direction before hardening and tempering of a solid valve body; steel used by the solid valve body comprises the following elements in percentage by mass: 0.26%-0.33% of C, 0.15%-0.35% of Si, 0.4%-0.9% of Mn, less than or equal to 0.008% of P, less than or equal to 0.004% of S, 1.4%-2.0% of Cr, less than or equal to 0.3% of Ni, 0.6%-1.2% of Mo, less than or equal to 0.3% of Cu, 0.015%-0.035% of Al and the balance of Fe and inevitable impurity elements. According to the four-way valve body produced through the manufacturing method, the yield strength Rp0.2 is larger than or equal to 90 KSI at the same time, and when a hydrogen sulfide stress corrosion resistance test is carried out, when the pre-stress is 80% of the yield strength, the valve body does not break after the test time is longer than 720 hours.

This invention discloses a highly efficient method for reducing ferric ions in zinc leaching solution, belonging to the field of hydrometallurgical technology. The zinc leaching solution and zinc sulfide concentrate are placed in a closed reactor and subjected to a pressure-enhanced reduction reaction at a temperature of 100-120℃ and a pressure of 0.2-0.3 MPa to reduce the ferric ions in the leaching solution. Simultaneously, compressed air is introduced into the reaction system to prevent the generation of hydrogen sulfide gas. The reaction time is 0.5-2.0 h. The reduced reaction system is then settled and filtered to obtain the reduced solution and reduced sulfur residue. This technical solution innovatively proposes the use of compressed air for pressure-enhanced reduction of Fe in zinc leaching solution. 3+ This achieves the suppression of H2S gas generation while avoiding the reduction of Fe. 2+ It is oxidized again to Fe by a high concentration of O2. 3+ The pressurized reduction process within a closed container significantly improves reduction efficiency while enhancing the production environment. It achieves the cascade separation and enrichment of multiple metals, closed-loop circulation of the medium, and the reduction, resource recovery, and harmless treatment of slag.

This invention discloses a system for recovering metal ions from acidic solutions. The system includes a hydrogen sulfide preparation device, a purification device, and a solid-liquid separation device. The hydrogen sulfide preparation device includes a bioreactor and an environmental control component. The bioreactor contains a reaction chamber, and the environmental control component regulates the conditions within the reaction chamber to maintain microbial activity and generate hydrogen sulfide gas. The purification device includes a gas-liquid contact reactor, into which acidic wastewater is fed, allowing hydrogen sulfide-containing gas to mix with the acidic wastewater. Unreacted hydrogen sulfide-containing gas is returned to the bioreactor. The solid-liquid separation device includes a precipitator, which receives the mixed wastewater and separates the metal sulfides generated in the wastewater from the liquid phase. This invention utilizes on-site biological preparation of inexpensive hydrogen sulfide to replace purchased reagents, achieving selective recovery and resource utilization of valuable metals while efficiently and safely removing heavy metals from wastewater.

This invention discloses a method, system, device, and medium for early warning of hydrogen sulfide concentration based on sedimentary layer metabolic thermal deviation, belonging to the field of sedimentary layer gas monitoring technology. The method includes: sequentially applying a first thermal micro-perturbation and a second thermal micro-perturbation to the physical center of the interface to construct a nonlinear instability coefficient and record the critical deceleration determination time; latching a reference state in response to the physical center of the interface meeting preset evolution conditions and recording the interface structure triggering time; constructing a biological amplification factor based on the reference state by applying isoparametric thermal pulses to determine activity-enhanced interface erosion; applying controlled hydrodynamic pulses to diagnose the reservoir driving type using gradient peak migration characteristics; and outputting a graded early warning based on the reservoir driving type when the causal leading time sequence conditions are met. This invention eliminates pore structure interference through dual-amplitude thermal micro-perturbations, distinguishes the causes of interface erosion through self-referenced causal discrimination, and adaptively identifies the reservoir driving mechanism through dynamic thermal diffusion reference cycle number, thus achieving advanced graded early warning.

Provided is a hydrogen sulfide detoxification device for a battery that detoxifies hydrogen sulfide using a simple configuration. A vehicle (10) mainly includes a medium flow passage (30), a medium cooling section (35), a battery pack case (23), and an arithmetic control section (24). The medium flow passage (30) is configured so that cooling medium (33) flows inside the medium flow passage (30) in a manner in which battery cells (22) containing sulfides are disposed between each other. The medium cooling section (35) is configured so that the cooling medium (33) is cooled. A detection section (25) is configured so that hydrogen sulfide generated from the battery cells (22) is detected. If the detection section (25) detects that hydrogen sulfide is generated, the arithmetic control section (24) causes the cooling medium (33) that has been cooled by the medium cooling section (35) to flow in the medium flow passage (30).

The utility model relates to a kind of multi-stirring efficient vulcanization reaction kettle, including tank body, mixer and gas pipe, the liquid outlet of the mixer is connected with the side of tank body intercommunication;The side of tank body away from mixer is equipped with liquid outlet;Tank body bottom is equipped with slag outlet;Slag outlet is equipped with slag valve;The gas pipe is set in tank body top, and one end of gas pipe is inserted into tank body, and the other end is connected with gas conveying device.The utility model can mix waste acid and vulcanizing agent fully by mixer;And hydrogen sulfide gas is delivered to tank waste acid by gas pipe, so that hydrogen sulfide gas and waste acid react, conveniently recycle hydrogen sulfide gas, reduce the consumption of sodium hydrosulfide and sodium hydroxide, reduce processing cost.

This invention discloses an amine liquid tank liquid sealing system, belonging to the petrochemical field. The amine liquid tank liquid sealing system includes an amine liquid tank and an amine liquid sealing tank, wherein the bottom of the amine liquid sealing tank is higher than the top of the amine liquid tank; the top of the amine liquid tank is connected to the top of the amine liquid sealing tank; and the bottom of the amine liquid sealing tank is connected to the amine liquid tank. This invention solves the problem of hydrogen sulfide emissions from amine liquid tank exhaust gas under normal and stable operating conditions by optimizing the on-site layout of the water sealing tank and improving the liquid sealing medium of the water sealing tank. This provides technical support for the control of odor sources in the plant and the creation of an odor-free factory.

This invention discloses a SnSe / NiO heterojunction gas sensing material, an olfactory frequency modulated sensor, its preparation method, and its application, belonging to the field of gas sensor technology. The SnSe / NiO heterojunction gas sensing material is prepared by the following steps: hydrothermal reaction of SnSe nanosheets with Ni salt to obtain the SnSe / NiO heterojunction gas sensing material; wherein the molar ratio of SnSe nanosheets to Ni salt is 1:(0.03~0.15); the hydrothermal reaction temperature is 160~200℃, and the reaction time is 10~14h. The olfactory frequency modulated sensor prepared from the SnSe / NiO heterojunction gas sensing material of this invention exhibits excellent resistance to sulfur poisoning and can selectively identify hydrogen sulfide from volatile sulfur compound mixtures.

This invention belongs to the field of oil refining and chemical engineering, and discloses a saturated light hydrocarbon recovery and purification system and method. The method includes: recovering mercaptan-containing product gas from refinery process feedstock treated with MDEA using an absorption-desorption method; optionally, the method further includes removing mercaptan from the mercaptan-containing product gas; the mercaptan-containing product gas is mercaptan-containing C2 enrichment gas and / or mercaptan-containing crude liquefied petroleum gas; the refinery process feedstock includes refinery rich gas feed and crude hydrocarbon feed. When recovering C2 as a feedstock for ethylene cracking, this invention can remove only hydrogen sulfide and carbon dioxide from the recovered product without removing mercaptan, thus meeting the purity and mercaptan content requirements of the recovered product, reducing repeated desulfurization and sulfur injection processes in the ethylene cracking process, and lowering investment and energy consumption.