Automatic deasphalting and wax separation deoiling apparatus having metering and weighing functions

Abstract

An automatic deasphalting and wax separation deoiling apparatus having metering and weighing functions includes an n-butanol deasphalting device, an n-butanol wax separation deoiling device and a fully-automatic filling machine; a plurality of trays are arranged in a first deasphalting tower and a second deasphalting tower, and are sequentially numbered as a first tray, a second tray,..., and an Nth tray from top to bottom, a solvent tank is communicated with the lower part of the side end of the first deasphalting tower through a feed tube with a valve, and the tube orifice of the feed tube at the internal lower end of the first deasphalting tower is arranged downwards, and is arranged below a chassis at the lowest end of the first deasphalting tower; and the fully-automatic filling machine is serially connected with the side part of a heating furnace through a feed tube with a pump, and the fully-automatic filling machine comprises a wireless remote control receiving device, a wireless remote control transmitting device and an automatic metering device. The apparatus has the advantages of lightness and flexibility in movement, simplicity in operation, high metering precision, andrealization of local yard filling without carrying a barrel; and all operations can be completed through holding a wireless remote controller via switching and inserting a discharging tube by an operator.

Description

technical field [0001] The invention relates to the field of chemical equipment, in particular to an automatic deasphalting, waxing and deoiling device with metering and weighing. Background technique [0002] Solvent deasphalting is a petroleum refining process for processing heavy oil. The process uses heavy oil such as vacuum residue as raw material, and uses propane, butane and other hydrocarbons as solvents for extraction. The extract is deasphalted oil. It can be used as heavy lubricating oil raw material or cracking raw material, and the raffinate deoiled asphalt can be used as road asphalt or other purposes. [0003] In the prior art, a propane deasphalting device is commonly used for deoiling and waxing, see attached image 3 , Figure 4 ; Propane deasphalting speed is fast, solvent recovery speed is fast, and propane is good to asphalt separation effect, but also has following shortcoming simultaneously: (1) propane deasphalting needs to be produced under high pre...

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Problems solved by technology

[0003] In the prior art, a propane deasphalting device is commonly used for deoiling and waxing, see attached image 3 , Figure 4 ; Propane deasphalting speed is fast, solvent recovery speed is fast, and propane is good to asphalt separation effect, but also has following shortcoming simultaneously: (1) propane deasphalting needs to be produced under high pressure, as propane at 38-42kg / cm 2 Produced under pressure, isopropanol is at 7kg / cm 2 Production under pressure, the cost of production equipment is relatively high; (2) Degreasing and degreasing requires two other mixed solvents. Commonly used solvents include acetone, benzene, methyl ethyl ketone or toluene, etc. These solvents are highly toxic, light solvents, easy to volatilize, and loss faster, thus wasting raw materials and causing unnecessary waves; (3) In addition, standard barrel filling equipment is a necessary equipment for liquid products in petrochemical, oil, chemical, food and many other industries.

At present, there are three filling methods that are most commonly used: manual handling by scale measurement, manual handling by automatic measurement, and manual and mechanical handling by automatic measurement: 1. Manually move barrels and scales. The entire operation process is carried out manually, and the measurement accuracy depends on the operator's attention , close the valve while looking at the scale, not only requires the operator to be highly concentrated, but also requires them to be quick-sighted, otherwise it will be either too much or too little, and there will be great uncertainty, so the measurement accuracy is poor, and the total weight of the empty barrel and the raw material is up to About 250kg, moving in and out is very labor-intensive, and a little carelessness in the heavy barrel handling process will cause injury. This filling method is relatively primitive and backward, but the equipment is simple and the economic investment is small. Small and medium-sized enterprises still There is a certain amount of use; 2. The automatic measurement method of manually moving the barrel is controlled by the electronic scale to adjust the size of the valve switch. The measurement accuracy is affected by the change of the liquid level of the barrel and the change of the viscosity of the material, generally up to less than 2‰ , the error range is relatively stable

However, moving in empty barrels, moving out full barrels, and sending them to the storage yard is still done manually, and the labor intensity is relatively high. This method is also widely used in small and medium-sized enterprises.

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