摘要：【中文】本技术发明属于低温余热节能技术领域，特别涉及一种彩涂焚烧炉低温烟气余热综合利用系统及方法。包括汽水换热系统、一级新风换热系统、二级新风换热系统与热泵回收循环水余热系统；汽水换热系统与一级新风换热系统并联后与二级新风换热系统串联，烟气余热为梯级利用；热泵回收循环水余热系统与二级新风换热系统并联，作为厂房供暖热量的补充。本发明将低温烟气余热直接给生产酸碱液槽加热、彩涂板烘干，加热新风用于厂房供暖，采用热泵技术将循环水余热回收作为厂房供暖的热量补充，既实现了彩涂线中低温烟气余热的梯级利用，又实现了低温烟气与循环水余热综合利用降低能耗的目的。 【EN】The invention belongs to the technical field of low-temperature waste heat energy conservation, and particularly relates to a system and a method for comprehensively utilizing low-temperature flue gas waste heat of a color coating incinerator. The system comprises a steam-water heat exchange system, a primary fresh air heat exchange system, a secondary fresh air heat exchange system and a heat pump circulating water waste heat recovery system; the steam-water heat exchange system is connected with the primary fresh air heat exchange system in parallel and then connected with the secondary fresh air heat exchange system in series, and the flue gas waste heat is utilized in a gradient manner; and the heat pump circulating water waste heat recovery system is connected with the secondary fresh air heat exchange system in parallel and is used for supplementing the heating heat of the plant. The invention directly heats the low-temperature flue gas waste heat to the acid and alkali liquor production tank, dries the color coated sheet, heats fresh air for heating a factory building, and recovers the circulating water waste heat by adopting a heat pump technology to supplement the heat for heating the factory building, thereby realizing the cascade utilization of the low-temperature flue gas waste heat in the color coating line and the purpose of comprehensively utilizing the low-temperature flue gas and the circulating water waste heat to reduce the energy consumption.

摘要：【中文】本发明提供一种低聚木糖的制备方法。该方法包括步骤：将玉米芯粉与酸的水溶液混合均匀，经挤压膨化得到预处理料液；将预处理料液与水混合，调节pH至4.0‑6.0，加入木聚糖酶，于50‑60℃下酶解反应6‑12h，然后进行灭酶得到料液；料液经活性炭脱色、过滤、离子交换脱盐、真空浓缩、色谱分离，然后再经活性炭脱色、过滤、离子交换脱盐、真空浓缩得到低聚木糖。本发明前处理方法简单，采用挤压膨化法大大简化了原料的预处理工序，提高了糖的溶出率；经过本发明方法所得低聚木糖收率和纯度高，颜色和透光性较好。 【EN】The invention provides a preparation method of xylo-oligosaccharide. The method comprises the following steps: uniformly mixing the corncob powder with an acid aqueous solution, and extruding and puffing to obtain a pretreatment feed liquid; mixing the pretreated feed liquid with water, adjusting pH to 4.0-6.0, adding xylanase, performing enzymolysis reaction at 50-60 deg.C for 6-12h, and inactivating enzyme to obtain feed liquid; the xylo-oligosaccharide is obtained by decoloring the feed liquid by active carbon, filtering, desalting by ion exchange, concentrating in vacuum, separating by chromatography, decoloring by active carbon, filtering, desalting by ion exchange and concentrating in vacuum. The pretreatment method is simple, the pretreatment process of the raw materials is greatly simplified by adopting an extrusion puffing method, and the dissolution rate of the sugar is improved; the xylo-oligosaccharide obtained by the method has high yield and purity, and good color and light transmission.

摘要：【中文】本发明属于冰塞技术领域，具体涉及一种制冷夹套的排气装置。包括调节螺钉、外套筒和排气管，排气管底部通过螺纹连接的方式安装在制冷夹套排气口上，排气管内部为通孔，从下到上设置有三个台阶面；第一个台阶面与制冷夹套上端面贴合，用来限制排气管底部螺纹拧入的深度；第三个台阶面与调节螺钉头部位置贴合，限制调节螺钉螺纹拧入深度。本发明所述的一种制冷夹套的排气装置，能够通过调节螺钉和外套筒与排气管相对位置的变化改变排气孔的通流面积，控制氮气的排气量，解决了排气量控制不精准、冰塞时间不可控等问题，同时也很好的节省液氮资源。 【EN】The invention belongs to the technical field of ice plugs, and particularly relates to an exhaust device of a refrigeration jacket. The air exhaust pipe comprises an adjusting screw, an outer sleeve and an air exhaust pipe, wherein the bottom of the air exhaust pipe is arranged on an air exhaust port of a refrigeration jacket in a threaded connection mode, a through hole is formed in the air exhaust pipe, and three step surfaces are arranged from bottom to top; the first step surface is attached to the upper end surface of the refrigeration jacket and used for limiting the screwing depth of the threads at the bottom of the exhaust pipe; the third step surface is attached to the head of the adjusting screw to limit the screwing depth of the adjusting screw. According to the exhaust device of the refrigeration jacket, the flow area of the exhaust hole can be changed through the relative position change of the adjusting screw and the outer sleeve with the exhaust pipe, the exhaust volume of nitrogen is controlled, the problems that the exhaust volume is not accurately controlled, the ice plug time is not controllable and the like are solved, and meanwhile, liquid nitrogen resources are well saved.