Direct oxidative conversion of sodium sulfide to sodium sulfite by absorbing the heat of reaction in a fluidized bed system using adiabatic cooling专利检索-硫酸盐制浆法造纸专利检索查询-专利查询网

Direct oxidative conversion of sodium sulfide to sodium sulfite by absorbing the heat of reaction in a fluidized bed system using adiabatic cooling

阅读：708发布：2021-01-16

专利汇可以提供Direct oxidative conversion of sodium sulfide to sodium sulfite by absorbing the heat of reaction in a fluidized bed system using adiabatic cooling专利检索，专利查询，专利分析的服务。并且Process for simultaneously producing sulfite pulping chemical from a spent pulping medium by the exothermic oxidative conversion of sodium sulfide to sodium sulfite and for the control of the temperature in exothermic reaction and also for employing the exothermic reaction heat to make steam to be mixed with air for use in said oxidation process. Ground particles of a spent pulping smelt are treated in a fluidized bed reactor in intimate contact with moving air enriched with steam for about 10 seconds to 2 hours, wherein the weight ratio of steam to air ranges from about 0.2 to 1 to 1.2 to 1. The temperature in the reactor is adiabatically controlled and the heat of reaction generated in the reactor is absorbed by adiabatic cooling to form the steam used in the reactor.，下面是Direct oxidative conversion of sodium sulfide to sodium sulfite by absorbing the heat of reaction in a fluidized bed system using adiabatic cooling专利的具体信息内容。

权利要求

2. A process for controlling the temperature of the exothermic reaction employed for the direct oxidation conversion of sodium sulfide contained in a pulping smelt to sodium sulfite in a fluidized bed reactor system and forming the necessary steam for moderation of the reaction, the process comprising the steps of:

2. absorbing the heat of reaction by adiabatic cooling to form the steam for the reaction in the reactor system at a temperature of about 212* F. to about 1,200* F. to thereby produce the temperature controlled oxidation reaction and sodium sulfite, the process further characterized by a balance between the steam required for moderation of the reaction and that formed by the adiabatic cooling of the reactor.

3. A process as defined in claim 2 in which the temperature of step (2) is about 350* to 1,100* F.

4. A process as defined in claim 2 in which the steps (1) and (2) are repeated step-wise at least once, and the water is introduced into a fluid reactor of the reactor system.

5. A process as defined in claim 2 in which the steps (1) and (2) are repeated step-wise at least once, and water is introduced into a transport-type reactor of the reactor system.

6. A process as defined in claim 2 in which the steps (1) and (2) are repeated step-wise at least once, and water is introduced into a multistage spouted bed reactor of the reactor system.

7. A process as defined in claim 2 in which the temperature of the water in step (1) is about 50* to 212* F.

8. A process as defined in claim 2 in which 0.2 to 1.2 pounds of water of step (1) is employed for each pound of the gas containing oxygen in the gas stream.

9. A process as defined in claim 2 in which in step (1) 0.5 to 2.0 pounds of water is used for each pound of smelt particles.

10. A process as defined in claim 1 in which the generated steam is conveyed to the outside of the fluidized reactor and mixed with air to produce a gaseous air stream mixture before the mixture enters the fluidized bed direct oxidation reaction for the conversion of sodium sulfide to sodium sulfite.

11. A process as defined in claim 1 in which generated steam is introduced into the fluidized reactor.

说明书全文

相关专利内容

标题	发布/更新时间	阅读量
一种制备木素磺酸盐的方法	2020-05-11	893
一种提高木质纤维素酶解糖化得率的方法	2020-05-12	478
聚合物在制造纸或纸板的过程中用于控制沉积物形成的用途	2020-05-14	620
一种雾面PET离型纸的制备方法	2020-05-08	244
一种基于双电化学传感器的硫酸盐法制浆过程纸浆卡伯值的在线检测方法与装置	2020-05-13	621
一种从硫酸盐法制浆黑液中提取木素的方法及装置	2020-05-13	1014
一种除钙镁渣回收锂及制备三元前驱体材料的方法	2020-05-15	590
一种低转移格拉辛离型纸的制备方法	2020-05-08	226
一种再生纤维素纤维制备方法及其纤维	2020-05-14	698
一种用竹浆生产复合原纸工艺方法	2020-05-14	432

高效检索全球专利

专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。

我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。

申请试用

分析报告

专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。

申请试用

硫酸盐制浆法热门专利

热门分类

Direct oxidative conversion of sodium sulfide to sodium sulfite by absorbing the heat of reaction in a fluidized bed system using adiabatic cooling

该功能需要专业版企业版VIP权限，您可以：