Synthesis And Evaluation Of PMA Desulfurizer

Natural gas as a clean and efficient energy, industrial and everyday life has been widely used. The main natural gas harmful gas hydrogen sulfide, a poisonous, smelly gases. Not only does it make the metal equipment and pipeline corrosion, catalyst poisoning, but also to human health threats. Even small amounts of hydrogen sulfide also give the body harm. It must be the removal of hydrogen sulfide gas in natural gas. Removal of hydrogen sulfide in a variety of methods, because of the wet oxidation desulfurization agent can be recycled, recovered sulfur byproducts, etc. desulfurization capacity to adapt to the atmosphere and is widely used, but the prevalence of traditional wet oxidation desulfurization process require regular desulfurizer active component, adjusting the pH to produce large volumes of wastewater and other problems, so explore new green wet oxidation desulfurization process is important.Firstly, the water will epichlorohydrin in acidic conditions to unlock the ring generation of3-chloro-1,2-propanediol, and then with anhydrous piperazine in methanol solvent, the reaction of1,4-(2,3-hydroxypropyl) piperazine. The amount of catalyst in the synthesis of the experiment, the reaction temperature, reaction time of the ring-opening reaction of epichlorohydrin effects; different from the reaction solvent, the mole ratio, the reaction time of anhydrous piperazine and3-chloro-1,2-propanediol reaction of propylene glycol. By IR, respectively intermediate and3-chloro-1,2-propanediol target product1,4-(2,3-dihydroxypr-opyl) piperazine characterized in which the objective product. Establish the optimal conditions for hydrolysis of epichlorohydrin ring opening of3-chloro-1,2-propanediol: the dilute sulfuric acid mass fraction of10%, reaction temperature100℃, reaction time2h, a yield of79.2%; determine optimal synthesis conditions of the target product: anhydrous methanol as a reaction solvent, n (anhydrous piperazine):n (3-chloro-1,2-propanediol)=1:2.2, reaction control in about85℃, reaction time for7h, yield87.6%.Secondly, in the absorption of hydrogen sulfide piperazine desulfurizer performance evaluation, the effects of temperature, desulfurization agent concentration, amount of catalyst, additives and other factors on the amount of absorbed hydrogen sulfide desulfurizer process, influence the process, the separation process and regeneration cycle performance. Found200g5%concentration desulfurizer2%increase the amount of catalyst0.5mL, plus2%additives TET, increase the amount of additive10%BIC, absorption of hydrogen sulphide at room temperature, the carrier gas flow rate20mL/s conditions, which can achieve the sulfur capacity of about2.71%; at40℃, air volume40L/min oxidative regeneration conditions, the time necessary to complete regeneration of about20-40min; in the centrifuge speed4000r/min, centrifuged30s, its separation rate of about70%to90%.