43results about How to "Improve fouling" patented technology

The invention discloses a hydrotreating method of an inferior gasoline raw material. The method comprises the following steps: mixing inferior gasoline with thermal loaded oil and circulating hydrogen, allowing the mixture to enter a fluidized bed hydrogenation pretreatment reactor; separating the effluent of the hydrogenation pretreatment to obtain gas and liquid; returning the liquid as thermal loaded oil to the pretreatment reactor, allowing the gas to pass through a gasoline hydrotreating reactor in an upward flow manner; performing gas-liquid separation of the gasoline hydrogenation effluent in a low temperature low pressure separator, purifying the obtained hydrogen-rich gas for recycle, and performing gas stripping of the obtained liquid so as to be used as a gasoline blending component or a chemical raw material. The method of the invention greatly prolongs the running period of the inferior gasoline hydrotreating device.

The invention discloses a time-window-enthalpy-value-integral-based smoke cooling control method and system. The method comprises: obtaining a smoke flow at an entrance of a smoke processing system; calculating an integral value of a smoke removing enthalpy; dividing the integral value by a time window length; establishing a static function relation model between the removing enthalpy value and cooling water flows in unit time in the time window; and controlling the flow of cooling water according to the integral of removing enthalpy needed by the smoke. Therefore, the cooling water flow during the smoke cooling process can be effectively controlled.

The invention provides composite fuel oil and a preparation method thereof. The composite fuel oil comprises the following components of heavy oil, solvent oil and an additive, wherein the heavy oil is a substance diluted by a diluent, naturally settled and filtered; and the additive comprises a combustion-supporting agent, an atomizing agent and an anticorrosive agent. The preparation method comprises the following steps of: adding the diluent into the heavy oil; naturally settling and filtering the heavy oil added with the diluent, and removing impurities from the heavy oil; adding the solvent oil and the additive into the heavy oil after the impurities are removed, and stirring to obtain the composite fuel oil. The composite fuel oil provided by the invention has the characteristics of high efficiency, energy conservation, environmental friendliness, safety, no toxicity, no smoke or corrosion, no remained liquid, cleanness, sanitation, easy transportation, easy storage and low price; the oil saving amount can reach more than 15% averately; the composite fuel oil is the preferred fuel for replacing liquefied gas and diesel; when the composite fuel oil is applied in burning of a boiler, the content of components such as CO and SO2 of the flue gas is obviously reduced, and the heat efficiency of the boiler is increased; and the scaling condition in the boiler is obviously improved.

The invention discloses a pressure-bearing type intelligent scale analysis device which comprises a metallic scale analysis device main body, a titanium alloy anode, a water inlet, a water outlet, a scale cleaning mechanism, a draining port, a current detector, a PH online monitor, a processor and an electrolysis power supply control cabinet. The scale analysis device is arranged on the front endof a protected device; the PH online monitor is used for monitoring a PH value of water flowing in a chamber of the scale analysis device main body in real time at the water inlet and sending the PH value to the processor; after overproof water quality is detected by the processor, the scale cleaning mechanism is controlled to clean the scales around the cathode and the sewage is drained from thedraining port; the current detector is used for monitoring the current at the joint of the scale analysis device main body and the cathode in real time and sending the current to the processor; if thecurrent change reaches or exceeds a preset safety value, the scale analysis device is controlled by the electrolysis power supply control cabinet to cut off power. The pressure-bearing type intelligent scale analysis device is capable of realizing automatic scale cleaning and automatic scale discharging, is endowed with a scale absorbing capacity and is capable of reducing the later maintenance cost of the device.

The invention discloses a water heating system. The water heating system comprises a hot water tank, a combustion stove and a flue gas pipe for flue gas exhaust of the combustion stove. The water heating system further comprises a heat conducting oil pipe for containing heat conducting oil. The heat conducting oil pipe is an annular pipe, and the heat conducting oil pipe passes through the hot water tank and the flue gas pipe. The water heating system further comprises at least two expansion joints, the expansion joints are connected to the heat conducting oil pipe in series, and the portions, inside and outside the hot water tank, of the heat conducting oil pipe are both provided with at least one expansion joint. The water heating system further comprises a circulating pump for driving the heat conducting oil in the heat conducting oil pipe to cyclically flow. By means of the system, the problem that when straw serves as a heat source to heat water, the heated face of the water easily scales can be solved.

The invention relates to an aluminum material alkali corrosion additive and a preparation method thereof, and the aluminum material alkali corrosion additive comprises the following components in parts by mass: 170-230 parts of an organic complexing agent, 25-50 parts of an inorganic complexing agent, 40-70 parts of a scale inhibitor, 20-30 parts of glycerol, 40-80 parts of sulfide and 540-705 parts of deionized water. The preparation method comprises the following steps: step 1, weighing materials; step 2, mixing and stirring; according to the aluminum material alkali corrosion additive and the preparation method thereof, the obtained product is used for aluminum material alkali corrosion and has a good auxiliary effect during aluminum material alkali corrosion, the phenomena of non-uniform corrosion and excessive corrosion cannot occur when oil stains and an oxide layer on the surface of an aluminum material are removed through alkali corrosion, a uniform and consistent matrix surface layer can be obtained, and the corrosion resistance of the aluminum material is improved. And smooth anodic oxidation is ensured.