Novel drying and preheating tower for producing carbon disulfide coke particles by using coke continuous method

Abstract

The utility model discloses a novel drying and preheating tower for producing carbon disulfide coke particles by a coke continuous method, which comprises a tower body, an emptying port and a material injection port for injecting the coke particles are arranged at the upper part of the tower body, and a gas port for leading into a reactor to discharge flue gas is arranged at the bottom of the tower body. And the flue gas is discharged from the vent nozzle after being fully contacted with the injected scorched particles from bottom to top and being heated, and the scorched particles flow into the reactor from the bottom of the tower body from top to bottom. The coke particles are conveyed to the upper part of the tower body, flue gas discharged from the reactor and falling coke particles are dried and preheated, and the dried coke particles flow into the top of the reactor from the bottom of the tower body, so that the coke particles are preheated by fully utilizing the waste heat of flue gas, the energy consumption of the whole system is reduced, and the traditional drying, storage tank and preheating are integrated; the process is simplified, production links are reduced, and equipment investment is saved.

Description

Technical Field

[0001] The utility model relates to the field of chemical industry, in particular to a novel coke continuous method for producing carbon disulfide coke particles drying and preheating tower. Background Art

[0002] The "coke continuous process for producing carbon disulfide" mainly involves conveying the purchased coke particles to a rotary dryer, with the heat source being provided by a hot air blower at the furnace head; the hot air blower can burn natural gas or other fuels, and dry the moisture in the coke particles at 200°C and heat the coke particles to more than 100 degrees. The hot coke particles are then conveyed to a coke particle storage tank with insulation on the production line, and gradually added to the reactor according to process requirements, and gradually heated to the temperature required for the reaction; the entire process requires the configuration of an additional heat source to provide heat for the drying and preheating of the coke particles, which increases the energy consumption of the product and increases the cost, and the preheated temperature of the coke particles is only more than 100 degrees, which is far from the temperature required for the reaction, and it is necessary to continue to consume the external heating source of the reactor to provide heat, increasing the consumption of the heat source; at the same time, there is a considerable residence time from drying to adding to the reactor, which will cause the preheated coke particles to cool down naturally and increase the degree of reheating in the reactor. Utility Model Content

[0003] The purpose of the utility model is to provide a novel coke continuous method for producing carbon disulfide coke particles drying and preheating tower in order to solve the above problems.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] A novel coke continuous process for producing carbon disulfide coke pellet drying and preheating tower comprises a tower body, wherein the upper part of the tower body is provided with a vent and a material injection port for injecting coke pellets, the bottom of the tower body is provided with a gas port for introducing flue gas discharged from a reactor, and the flue gas fully contacts the injected coke pellets from bottom to top and is discharged from the vent after being heated, and the coke pellets flow from the bottom of the tower body into the reactor from top to bottom.

[0006] Preferably, a flue gas distributor is provided in the tower body and above the gas outlet.

[0007] Preferably, two groups of drop legs for injecting preheated coke particles into the reactor are symmetrically arranged at the bottom of the tower body.

[0008] Preferably, the heating source of the reactor is integrated in a common heating box of several reactors in the production line, and the flue gases of several reactors are discharged as a whole.

[0009] Preferably, the temperature of the reaction gas at the top outlet of the reactor is greater than or equal to 445°C, and the temperature of the flue gas discharged from the reactor is greater than or equal to 500°C.

[0010] Compared with the prior art, the beneficial effects are:

[0011] 1. The utility model makes full use of the waste heat of the flue gas discharged from the reactor as the heat source of the preheating tower, eliminating the need for a separate heat source for preheating and drying the coke pellets in the traditional way, thus reducing the energy consumption of the entire system;

[0012] 2. The utility model integrates traditional drying, storage tank and preheating into one, simplifies the process, reduces production links and saves equipment investment;

[0013] 3. The utility model transports the purchased coke particles to the upper part of the drying and preheating device after screening, and uses the 500°C tail gas from the reactor heating source to dry and preheat them from bottom to top. The drying and preheating tail gas is discharged from the top of the equipment, and the coke particles dried and preheated to above 250°C are transported to the coke particle buffer tank at the top of each reactor through the spiral conveying device arranged at the bottom of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] The following are the descriptions of the reference numerals:

[0017] 1 is the tower body, 2 is the drop leg, 3 is the flue gas distributor, and 4 is the vent. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1 , the technical solution of the utility model is further explained:

[0019] like Figure 1 As shown, the utility model discloses a novel coke continuous process for producing carbon disulfide coke particles drying and preheating tower, comprising a tower body 1, wherein the upper portion of the tower body 1 is provided with a vent 4 and a material injection port for injecting coke particles, and the bottom of the tower body 1 is provided with an air inlet for introducing flue gas discharged from the reactor; that is, the vent is provided at the upper portion of the tower body and the air inlet is provided at the bottom of the tower body, and the flue gas discharged from the reactor enters the tower body from the air inlet at the bottom of the tower body, and is finally discharged to the outside through the vent; at the same time, the tower body is also provided with a material injection port, and the coke particles transported to the upper portion of the tower body are injected into the tower body through the material injection port.

[0020] The flue gas is fully in contact with the injected coke particles from bottom to top and is discharged from the venting port 4 after being heated, and the coke particles flow into the reactor from the bottom of the tower body 1 from top to bottom. That is, the flue gas discharged from the reactor is discharged from the venting port at the top of the tower body from bottom to top through the gas port at the bottom of the tower body. In the process of the flue gas climbing upward, the coke particles injected from the top of the tower body are in contact with the flue gas for heat exchange, so that the coke particles are preheated.

[0021] Furthermore, if Figure 1 As shown, a flue gas distributor 3 is provided in the tower body 1 and located above the gas inlet. That is, in order to ensure that the flue gas and the coke particles are in full contact and heat exchange, a flue gas distributor is provided above the gas inlet.

[0022] Furthermore, if Figure 1 As shown, two groups of drop legs 2 for injecting preheated coke particles into the reactor are symmetrically arranged at the bottom of the tower body 1. That is, two drop legs are arranged on both sides of the bottom of the tower body, and the coke particles are respectively provided to two screw conveyors through the drop legs, and the screw conveyors convey the coke particles to the buffer tank on the reactor.

[0023] Specifically, the heating source of the reactor is integrated in a common heating box of several reactors in the production line, and the flue gas of several reactors is discharged as a whole. In other words, the flue gas discharged from each reactor is used as the heat source of the preheating tower to fully utilize the waste heat.

[0024] Furthermore, the reaction gas temperature at the reactor top outlet is greater than or equal to 445°C, and the flue gas temperature discharged from the reactor is greater than or equal to 500°C. In other words, it is necessary to ensure that the reactor temperature at the reactor top outlet is not lower than 445°C, and the flue gas temperature discharged from the reactor is not lower than 500°C, so that the coke particle temperature can reach above 100°C during the subsequent heat exchange between the flue gas and the coke particles.

[0025] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A novel coke continuous process for producing carbon disulfide coke pellets drying and preheating tower, characterized in that: The tower body comprises a vent and a material injection port for injecting coke particles on the upper part of the tower body, a gas port for introducing flue gas discharged from the reactor into the bottom of the tower body, and the flue gas is fully in contact with the injected coke particles from bottom to top and is discharged from the vent after being heated, and the coke particles flow into the reactor from the bottom of the tower body from top to bottom.

2. The novel coke continuous process for producing carbon disulfide coke pellet drying and preheating tower as claimed in claim 1, characterized in that: A flue gas distributor is arranged in the tower body and above the gas outlet.

3. The novel coke continuous process for producing carbon disulfide coke particle drying and preheating tower as claimed in claim 1, characterized in that: Two groups of drop legs for injecting preheated coke particles into the reactor are symmetrically arranged at the bottom of the tower body.

4. The novel coke continuous process for producing carbon disulfide coke particles drying and preheating tower as claimed in claim 1, characterized in that: The heating source of the reactor is integrated in a common heating box of several reactors in the production line, and the flue gases of several reactors are discharged as a whole.

5. The novel coke continuous process for producing carbon disulfide coke pellet drying and preheating tower as claimed in claim 1, characterized in that: The temperature of the reaction gas at the top outlet of the reactor is greater than or equal to 445°C, and the temperature of the flue gas discharged from the reactor is greater than or equal to 500°C.

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